SEIKO

QUARTZ TESTER
QT-99
INSTRUCTION MANUAL
 SEIKO QUARTZ TESTER QT-99

The SEIKO Quartz Tester QT-99 is the high-performance digital daily rate
counter using a full-scale micro computer. It can measure and immediately
indicate digitally with high accuracy and reliability the daily rate of high·
precision electronic timepieces such as quartz watches and tuning fork
watches.
The computer undertakes the measurement, data processing, and display of
results according to the .various, complicated routines stored in a built-in
memory, making it possible to measure special watches that have so far
defied the measurement by the conventional quartz testers.
T he crystal oscillator used provides a highly stabilized reference frequency
with an extremely high accuracy of 10-8 .
Your QT-99 works with solid-state reliability and stability and is very easy
to handle.

CONTENTS

SEIKO Quartz Tester QT-99 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Designation and Explanation of Control Panel Functions . . . . . . . . . . . 2
Getting Acquainted . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Principal Functions and Features . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Description of Control Panel Functions . . . . . . . . . . . . . . . . . . . . . . 5
Function of Electrofflagnetic/Electrif-field Detection
Microphone DM-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Wiring and Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
QT-99 Table of Measurable Ranges . . . . . . . . . . . . . . . . . . . . . . . . . 14
Wiring Diagram .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
QT-99 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

_,_
DESIGNATION AND EXPLANATION OF CONTROL PANEL
FUNCTIONS
• Read the description of control panel functions while referring to the layout of func-
t ions shown below.

® ® ©@ ®

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®© Q) Q) ® ®

@ ® @ ®®

Japan Pat. No. 887228

903864
23 patents pending
U.S.A. Pat. No. 377754 7

- 2-
GETTING ACQUAINTED

• An Electro-magnetic/Electric-field detection microphone is used for QT-99,

and it must be kept away from electric machines and appliances which
emanate strong magnetic or static noises. Where a fluorescent lamp is
located, for example, keep the microphone at least 30cm away from it.
The quartz tester should not be exposed to direct sunlight, high humidity
and high temperature. Do not leave QT-99 at a sunny or dank place or at
a place close to a heat source like stove.
• Use QT-99 on the specified supply voltage. If it is connected to an outlet
other power-consuming electric appliances are using, the supply voltage
may decline or noises be generated, thus affecting the performance of
QT-99.
• Plug the power cord into the outlet, and leave QT-99 to stand for some
20 min. so that the oscillator will attain an accuracy necessary for measure·
ment. For a high stabilized measuring accuracy, it is recommended to keep
QT-99 plugged into the outlet all the time. Once the power cord has been
disconnected or a power failure has happened, it will take .some 20 min. .
for QT-99 to be ready for measurement after the power cord is connected
to the outlet again or power system is recovered.
• Handles the controls as instructed. Do not give undue forces on them or
hold the switches at halfway position.
• For detection of the electric field signal, the microphone DM-1 requires
two units of 1.5V silver oxide cell U.C.C. 301 for SEIKO watch use. The
cells are furnished together with OT-99. Put them into the microphone
from its bottom. The microphone consumes current as little as the ordi-
nary quartz watch does, and the cells will stand more than two years of
continuous duty. Replace the cells every two years or so.
• To clean the QT-99 enclosure, fittings and microphone, use a soft, dry
cloth. Never use trichloroethylene, thinner, benzine, alcohol or any other
solvent.

- 3-
PRINCIPAL FUNCTIONS AND FEATURES
• Provided with a computer-aided watch measuring system, QT-99 assures
you of easy operation and reliable results.
• The crystal oscillator that provides a reference signal for measurement is of
an oven-controlled type, and ensures highly accurate, stabilized measure-
ment.
• The daily rate can be automatically measured by placing the watch on the
microphone with the automatic frequency selection device.
Almost every watch can be measured in a single process; all that is needed
for measurement is to load it on a microphone.
• The measured daily rate is displayed in four digits (max.) together with a
(+) sign for gain and a (- ) sign for loss.
• The measuring time can be set in eight steps-4, 6, 8, 10, 12, 30, 60 sec.
and 120 sec.- from which to choose the best. In the case of channel
setting, the optimum gate times can be selected out of the whole-number-
ed seconds within the range of 2 to 120 sec. to meet the setup of a given
watch. Four channels are provided, and the memory data can be added
or changed.
• The display unit is 0.01 sec./day or 0.1 sec./day (by rounding off the
fractions to three or two decimal places. The measuring range is within
±19.99 sec./day or within ±199.9 sec./day.
• During measurement, the input indicator will flash in tune with the watch
signal detected.
• The measurement starts automatically as soon as the watch is set on the
microphone, and continuously until it is removed.
• You can monitor the watch signal detecting condit ions by earphone to
locate the watch at the best position on the microphone, making it feasible
to measure a watch of feeble signal. In addition, the optimum volume at
which the monitoring is made can be maintained as it is not affected by
the change in the measuring level.
• OT-99 uses the special circuit which detects the watch signal most accu-
rately. Read the value after measuring twice or three t imes, which indicate
the accurate daily rate. So it is not necessary to take an average of values
obtained by several measurements.
• When the watch signal is dead or when the daily rate is in excess of the
measuring range, no display will be indicated, eliminating the deceptive
readings as in the overflow lamp system.
• The 7-segment display is wide, bright and legible, and can be read even
from a distance.
• The DM-1 microphone is both used as Electro-magnetic and Electric-field
detection microphone because of its high performance, and it can be used
for measuring the daily rate of both analogue and digital electronic watches.
• Various types of microphones for Timegrapher can also be used with
GT-99. -4-
DESCRIPTION OF CONTROL PANEL FUNCTIONS

(A) POWER indicator

Lights up when the power switch is turned ON for measurement.
(B) SEC./DAY (daily rate display)
Displays the measured time accuracy in the daily rate. Display is blanked
out except for the decimal point in case of overflow or no entry of signal.
The display also extinguishes when the measuring circuit is reset.
(C) INPUT indicator
This indicator blinks at the same frequency as the watch signal's. If the
watch signal is high in frequency, the indicator will seem as if it stayed
lit.
(D) RESET indicator
Lights up whenever the measuring circuit is reset. When the watch is on
the microphone, the indicator will light up at the end of every cycle of
measurement.
(E) Watch selection switch
The switch is selected according to the_ type of watch to be measured.
For various types of watches and their measuring methods, refer to the
"QT.99 Table of Measurable Ranges". When the channels are used for
measurement, the watch selection switch is of no use.
(Fl EARPHONE jack
Used for monitoring the watch signal.
(G) POWER switch
Power is supplied when the switch is moved to ''ON" position. When
this switch is turned on, the measuring circuit will be reset for measure-
ment.
(H) RESET button
Used for the manual resetting of the measuring circuit. When it is requir-
ed to read the initial data of a watch after placing it on a microphone or
when it is required to measure watches one after another immediately,
depress this button. When the button is depressed, the preceding data on
the display will be cancelled immediately and the next measurement will
be started. The RESET button facilitates the measurement, especially
when the regulator is to be adjusted. When a watch is to be measured
continuously under a fixed condition, it is not necessary to work this
button. The measurement will not be started while the button is de-
pressed.

- 5-
(I) GATE TIME/CHANNEL setting switch
This switch is used for setting the gate time or the channel.
When the measurement is to be made with this switch set at GATE
TIME, it is necessary to set the watch selection switch (E) and the watch
signal divider selector switch (P) correctly. As soon as this switch is
changed over, the measuring circuit will be reset.
When the switch is set at CHANNEL, all the work for measurement will
be undertaken automatically by the computer so the watch selection
switch (E) and the watch signal divider selector switch (P) are not used.
(J) LEVEL adjuster (with switch)
Used for adjusting the watch signal level.
For almost all watches, the AUTO position (Turn it counterclockwise
until a click is heard.) will do for measurement. Except at the AUTO
position, the knob will increase the signal level when it is turned clock-
wise. Turn the knob clockwise if a feeble signal is to be measured. If the
signal is too strong as you will experience in the measurement of some
specific clocks, turn the knob counterclockwise to moderate its level.
The volume of the earphone is not affected by the adjustment of this
knob.
(K) INPUT jack
Used for connecting the microphone.
(L) Electro-magnetic/Electric-field detection microphone DM-1
A microphone for exclusive use with electronic watches of both analogue
and digital types.
(M) Mark for placing watch
A mark showing the best position for the detection of watch signal.
Where a liquid crystal watch (LCD) is to be measured, place it on the
microphone with its display side (glass) down on this mark.
(N) Electro-magnetic/Electric-field detection chanQeover switch and battery ·
switch
This switch serves to change the detection m~de from one to another
and also to turn on and off the built-in battery circuit. For the measure-
ment of liquid crystal watch (LCD), set the switch at LCD ON, and the
battery circuit will be turned on to permit the measurement in the elec-
tric-field detection mode.
When measuring the analogue watch or light-emitting diode watch (LED)
or when the microphone is not used, set the switch at STEP-SWEEP-
LED, and the battery circuit will be turned off to conserve battery life.
(0) Crystal oscillator check terminal
A 4.32 MHz signal is generated at this terminal. Used to check the crystal
oscillator of QT-99 for repair.

- 6-
(Pl Watch signal divider selector switch
This is used for measuring those watches whose output is of a special
frequency. If the watch output frequency is of an odd number (e.g.,
361 Hz) or of a mixed number (e.g., 170 2/3, 256 1/2, 361 1/3 Hz), set
the switch to the corresponding position. The watches of these fre-
quencies are of old-fashioned type, and will rarely be met with. Usually,
therefore, the switch is to be kept at GENERAL (even numbered fre-
quency position) . If the switch is set at +N/3, the measurement will not
be made unless the gate time is set at a multiple of 3 sec.
When the channel is used for measurement, this switch is not used.
(0) FUSE holder
This fuse holder has a voltage setting switch. Be sure to use only a 1A
fuse. As the voltage setting range is from 100V to 240V, it can cover any
home outlet voltage abroad.
Before using QT-99, be sure to set the fuse holder at the outlet voltage
available. If the power cord is plugged into the outlet with the power
switch held on, the fuse may be blown. But this is not a malfunction.
The voltage settings available are as follows.
100V, 110V, 120V,200V,220V,240V
(R) Grounding terminal screw
For noise reduction and operator's safety, be sure to connect a ground-
ing cable (furnished as one of standard accessories) to this screw. The
QT-99 will be grounded. Note that the noise may be increased all the
more if the cable is grounded improperly. Under any circumstances, do
not connect the grounding cable to a gas pipe.
(S) Power cord connector
This is to insert the connector plug of the power cord.

- 7-
FUNCTION OF ELECTRO-MAGNETIC/ELECTRIC-FIELD
DETECTION MICROPHONE DM-1

SWITCH OPERATION
The switch (N) at the left of the microphone is for changeover to and from
the electro-magnetic and the electric-field detection function.
When it is pushed to the LCD ON position, the battery will be activated, and
the microphone will assume the electric-field detection function with which
the daily rate of the LCD watch can be measured.
When it is pushed to the STEP-SWEEP-LED position, the battery will be turn-
ed off and the electro-magnetic function will start to measure the daily rate
of the analogue and the LED watches.
When the microphone is not used, keep the switch at STEP-SWEEP-LED posi-
tion to conserve battery life.

HOW TO OPERATE
• Analogue electronic watch
Set the switch (NI at STEP-SWEEP-LED position (electro-magnetic field
detection mode). Place the watch at or around the mark @ (M) (appearing
at the center of the microphone) with its dial facing you or upward.
See Photos 1 and 2. (Select the photo 1 or 2 position whichever produces
the higher sound level in the earphone.)
• Liquid crystal watch (LCD)
Set the switch (NI at LCD ON position (electric-field detection mode).
Place the watch on the microphone with its liquid crystal display to face
the mark @ (M) at the center of the microphone. (Namely, the case back
will face you.)
See Photo 3. The best way for measurement is to let the watch display the
date digits which will stay unchanged during measurement.
(Place the watch with its crown up or down whichever produces the higher
sound level in the earphone.)
Note: If the liquid crystal panel is smeared with sweat or oil, the m icrophone cannot
pick up the watch signal. Do not put the watch in a vinyl bag when its daily
rate is measu red.

-8-
• Light-emitting diode (LED)
watch
Set the switch (N) at STEP-
SWEEP-LED position (electro·
magnetic f ield detection mode).
Measure the watch by activating
its display in some way or other.
(Ex. Hold down the button with
an adhesive tape.) The best way
for measurement is to let the
watch display the date digits
which will stay unchanged dur- Photo 1
ing measurement. Fig. 1
Place the watch at or around the
mark fij) (M) appearing at the
center of the microphone in a
manner that its case back may
be turned up o r face you which-
ever makes the higher sound
level in the earphone. See Figs. 1
and 2.
• Battery change
Remove the battery hatch from
the bottom of the microphone
by turning it counterclockwise Photo 2
with a coin or the like. Replace
the two old cells with new ones,
and close the battery hatch by
turning it clockwise. Set two
cells so that their negative faces
may come on the far side in the
battery holder. Use the battery
U.C.C. 301 for SEIKO watch
use. See Photo 4.
• Cleaning
To clean the microphone, wipe
it gently with a soft, dry cloth.
Photo 3 Photo 4
Never use thinner, alcohol or any
other solvent or chemical.

-9-
WIRING AND OPERATION

• Put the connector plug of the power cord into the power cord connector
(S) in the back of OT-99.
• Put off the power switch (G), and connect the power cord plug into an
outlet . QT-99 employs an oven-controlled crystal oscillator for highly ac-
curate and stabil ized measurement, and it takes some 20 min. for the oven
to attain a stabilized temperature, that is, for the OT-99 to become ready
for measurement at a required accuracy, after plugging the power cord to
the outlet. Then, turn on the power switch (G), and the POWER indicator
(A) will light up, showing the measurement is ready.
• For the measurement of ordinary watches, set the watch signal divider
selector switch (P) at GENERAL.
• Put the plug of the Electro-magnetic/Electric-field detection microphone
(L) into the INPUT jack (K).
• Set the GATE TIME/CHANN EL setting switch (I) in position.
Fo r the measurement of a watch for which a channel is specified, set the
switch (I) at that channel.
For other watches, use the GATE TIME.
For those watches whose frequency is less than 1 Hz, select a measuring
t ime in an integral multiple of the generation period of watch signal.
For stabilized measurement, it is recommended to select an even-numbered
multiple.
Ex.:
Frequency (period) Measurement at a gate time of

0.25 Hz ( 4 sec.) 4, 8, 12, 60 or 120 sec.

0.1 Hz (10sec.) 10, 30, 60 or 120 sec.
0.2 Hz ( 5 sec.) 10, 30, 60 or 120 sec.
1/3 Hz ( 3 sec.) 6, 12, 30, 60 or 120 sec.
1/30Hz (30 sec.) 30, 60 or 120 sec.
1 /60Hz ( 1 min.) 60 or 120 sec.
Note: For example, SEIKO QUARTZ Cal. 4130A is rated at 0.2 Hz.·

For almost every watch whose frequency is 1 Hz or up, any gate time will
be available for measurement.
Note that the gate t ime available is limited for those watches whose fre-
quency has a decimal fraction as shown below.
Ex.:
3601/3 Hz (360.3), 170 2/3 Hz (170.6 ). 5 112 Hz (5.5) (Refer to (P). )

-10-
 Where a number of gate times are available, it is recommended to use the
longer rather than the shorter gate time, because it is recognized that the
longer the measuring time, the higher the measuring accuracy. There are
some special types of watches which defy measurement at an odd-number-
ed period. For such watches, use an even-numbered period. This is particu-
larly the case with balance wheel type watches which may not be measured
at an odd-numbered period under the influence of unbalanced swing.
• For those watches for which a channel is not specified, the watch selection
switch (E) must be set.
Select and depress one of the push buttons to meet the type of a given
watch, and the selection of frequency will be carried out automatically.
Green·button: For those leaping-hand watches, such as SEIKO analogue
type quartz watches, whose frequency ranges from 1/120
Hz to 12 Hz, select the green button.
White button: Use th is button for SE I KO Digital type quartz watches,
other liquid crystal watches or for electronic watches of
12 Hz to 64 Hz.
Red button: Use this bu tton for those quartz or tuning fork sweep-
hand watches of more t han 60 Hz or LED watches.
Grey button: Use t h is button for the measurement of ordinary balance
wheel ty pe watches (incl. battery ones) . If this button is
depressed, the decimal point will be shifted to allow the
daily rate measurement with in ± 199.9 sec./day. With the
grey button, it is possible to measure leap-hand quartz
watches of 1 Hz to 12 Hz. but the daily rate is shown in
0 .1 sec./day.
It is not necessary to operate these buttons when the channel is used for
measurement. If any of the buttons but the grey one is depressed, the
measurement will not be affected. In the case of channel measurement,
the computer will handle all the processes according to the programmed
data concerning type of watch and measuring method. (If the grey button
is selected, the channel measurement will be impossible as the measuring
unit is 0.1 sec./day .)
• Set the earphone plug into the EARPHONE jack (F).
• Set the LEVEL adjuster (J) at AUTO (turn it counterclockwise until a
click is heard.)
• Set the switch (N) on the electro-magnetic/electric-field microphone (L)
to meet the type of the watch to be measured. ( For details, refer to
"FUNCTION OF ELECTRO-MAGNETIC/ELECTRIC-FIELD DETEC-
TION MICROPHONE DM-1" on page 8.)

- 11-
• Put on the earphone and place the watch in the center (marked position)
of the microphone platform, and shift the watch or change its position
until the watch signal is heard largest.
(For an LED watch, the measurement should be made with its display on.)
* For the use of other microphones, refer to relevant manuals.
• Measurement is started automatically by placing the watch on the plat·
form of the microphone. If the measurell)ent is started with the operator's
finger on the watch or if the operator's finger touches the watch during
measurement, the -signal level may be changed to cause an error in the
measurement. (A vibration of the operator's finger is communicated to
the watch to change the relative position between the watch and micro-
phone, developing a change in the signal level. The error is not due to the
change in the timing of the watch itself.)
In such a case, disregard the affected measurement, and read the next
daily rate measured. If the reset button (H) is depressed immediately after
the watch has been set on the microphone, the correct reading will be
obtained from the beginning. The measurement is continued repeatedly
until the watch is removed from the microphone.
• Almost every watch can be measured with the LEVEL adjuster (J) at
AUTO. If the INPUT indicator (C) blinks precariously, turn the knob (J)
c lockwise.
Note: The level adjustment has nothing to do with the volume of the earphone.
For the measurement of balance wheel type watches with an acoustic
microphone, turn the level adjuster from the AUTO position for better
results. But be sure to keep the microphone away from acoustic noise and
mechanical vibration. The INPUT indicator (C) turns on and off at the
same frequency as that of the watch. If the watch has a high frequency,
the indicator will seem as if it stayed lit. Whether the level adjustment is
proper or not can be judged by the blinking state of this indicator.
• Immediately after the start of measurement, the display will be in the
blank, during which the first measurement is going on. If the GATE TIME/
CHANNEL setting switch is changed over while the data is displayed, the
measuring circuit will be reset to blank out the display and start the
measurement anew. This is also true of the case where the watch selection
switch (E) is changed over.
After the daily rate is measured, the display is automatically reset to ex-
tinguish when the watch is removed. The time to be required for the dis-
play to extinguish varies depending upon the gate time set.

- 12-
• If the RESET indicator blinks at a fast rate, it indicates that something is
wrong with the switch setting.
Check the switch setting by following the procedures below.
1. The button of the watch selection switch is not depressed when the
gate time is set.
2. Two adjoining buttons of the watch selection switch are depressed
when the gate time is set.
3. When the watch signal divider selector switch is set at other than
GENERAL, its setting does not agree with the gate time selected.
(Ex.: The gate time is selected at 4 sec., 8 sec. or 10 sec. with +N/3.
(For sweep-hand watch only))
4. When an unoccupied channel is selected. (No measuring routine is
programmed.)
5 . In the case of channel measurement, the grey button of the watch
selection switch is depressed .
• In the following cases, measurement is impos.5ible and the display will not
function.
A. When no input signal is supplied.
(INPUT indicator (C) will not light up.)
B. When the button of the watch selection switch (E) is not depressed
properly for gate time measurement.
C. When the daily rate of a watch exceeds the measu ring range.
D. When the Quartz Tester is affected by strong noise.
Fo r example, in case that the electro-magnetic m icrophone is used and
if the earphone makes a scratching sound or a hum without placing the
watch on it, don't measure the daily rate.
(In th is case. the INPUT indicator will blink even if no watch is set
on the microphone. If the INPUT indicator goes out when the m icro-
phone p lug is disconnected, you may consider that external noises
are responsible for the trouble .)
• The measuring method varies depending upon the watch calibre. Some
watch must be measured through the channel setting. When measuring any
watch, be sure to refer to a releva nt Watch Technical Guide.

-1 3-
QT-99 TABLE OF MEASURABLE RANGES

Type of Button of watch Mea9U rable Hz Available Watch & Clock

selection switch

-----
Microphone

Electro-fflagnetic Special SEI !(0 T\l!fin Quartz Cal. 99 .. Set at CH·1. Pull out the crown completely.

-----
i
L Elec,;ric-field Special

I I
Channel setting type , I - Electro-magnetic Green STEP 1/120-12 H-z
:.t:111.U UMt:t,A _(,Megaquaru) BErn1US Bifora
mioH Neo ~ic FAVR.~~~UB.Aui:JYN~HANS ,,
quartz crystal watches 17"'N on ·1i:R ARC .p
~ Analogue 1:lectro-magnetic White LCD. 12 -64 Hz CITIZEN (16 Hz)

11
I
Ouartz crystal r ~
Electro-magnetic Red
LEO.
SWEEP
60-1200Hz
CERTINA (Ultr'1Jartz) tONGll',jES (Ultraciuartz)
~w.c. fHP II ADO
MEGA f8129

c
watches
LED. 60 - 1200 Hz SEEMOS (LED( OMEG/\ (LEDi IJRANUS (LEDi
Electro,magnetic Red CITIZEN (LEDi RICOH (LED) ORIENT (LED)
-- ----------- - - --- - ~-- ---- --- - __
-----
SWEEP
Digital display by - ----- - -- -- - - -- - ,.

c
LED system Ultrasonic SEIKO (05LC, 05LCA, 061..C, 06LCA, 0114, 0124. 0634, 0644, 0654, 0664)
(32 KHz) Green STEP SE 11(0 Digital Stop Watch (The daily rate is measured by using electric-field detection microphone.)
~ Digital display by I CITIZEN ORIENT GRU!:N BWC TIMEX NEPRO
LCD system LCD. 12-64 Hz Microma SANYO Quartz WALCHRON
Electric-field White CASIOTRON 01 , 02, 03, 04 (For 04 Series. meas.iring time. is6 or 12 seconds.)
Watch - LED. OMEGA f300 . LONGIN ES riaume & Mercier BULOVA
-Tuning fork watches Electro-maglletic Red 60-1200 Hz tW.C. ETERNA. CITIZEN HI-SONIC)
SWEEP RADO CERT INA UNIVERSAL
Classification of Electronic watches _ St: IKU .!1J7t;L, ..>..>c , :S/t:L)
measurable timepieces Electro-magnetic Grey MECH. 1/1 20 - 12 Hz CITIZEN (COSMOTRONI etc.
Balance wheel - ((Battery) (The acoustic stand-typed microphone can also be used.I
watches Mechanical watches King SEIKO
Acoustic stand Grey MECH. 1/120- 12 Hz
(Mainspring) - Grand SEIKO, etc.
SEIKO (71005, 71007, 71101, 71507) RADO (CHRONOMETER)
Plate-typed or
- clip-typed probe Green STEP 1/120- 12 Hz SCHJIGAR JUNGHANS Aicron Quartz
JEC
_ Quartz Crystal Clocks Plate-typed or LCD. 12 - 64 Hz SEIKO (71002)
clip-typed probe White CITIZEN (Crystron)
(Analogue, LCD, LEDi
..__ Plate-typed or LED. SEIKO (71003, 71006, 71009, 71201, 71202, 71502, 71503, 71504, 71505)
Red 60- 1200 Hz
clip-typed probe SWEEP JECO Rhythm Quartz (64 Hz)
Plate-typed or LED. SEIKO (64001, 64501, 66004, 66504) CITIZEN (E litronl
Clock - '-Tuning fork clocks clip-typed probe Red SWEEP 60-1200 Hz
JECO
Battery-operated _ Plate-typed probe MECH. 1/120- 12 Hz Various marks (The hanger-typed microphone can also be used.)
Grey
'- Balance wheel ~ clocks
clocks
Mechanical clocks - Hanger typed Grey MECH . 1/120 - 12 Hz Various marks
(Main spring, etc.)
Notes: 1. When the daily rate of the LED display watch is measured by using the elect ro-magnetic/electric-field detection microphone, be sure to display all digits by
pushing down the button with adhesive tape before the watch is placed on the microphone.
2. The coverage by the electro-magnetic/electric-field detection microphone furnished is shadowed.

-1 4-
 WIRING DIAGRAM

L£0-
LCD SWEEP StEI" Mt'.C'"'., Elecvo-Magnetic/
ct:Jt=D Electric •f ield detection

- ~ microphone OM,1:
Used fo1 t!tt."-IIVll•l
W:l(ChQS ol ana1oguc ,)nd

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o.._ rc
u,oO
t tM£ LEVCL d1\)1li'll TV
"'"
e;,.Akt~l l o ...
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INP1Jl

I Acoustic: $tand,ryped micro-

l_) p hone ( optional) :
Ulled f(.)• 111~ t, ..1nKal wa1ches
o f 1>.11.:in cc wheel 1·yp~

Ultrason1c m ,c r01)hone !optional):

U300 tor 32 KH t Oio1u1I

-~
war<:h P,S only

~
PlaHHypcd probe l0ptional)
Used for almost all type-. of
doc.l ope, ottn9 0<1 a bc-'lttefy

Clip•typed probe !optio natl

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- 15-
QT-99 SPECIFI CATIONS

1. Measurable timepiece and Hertz: Watches and clocks w ith quartz crystal,
tun ing fork and balance wheel ( 1/120 Hz - 1,200 Hz)
2. Measuring time
Gate time measurement: 4 sec., 6 sec., 8 sec., 10 sec., 12 sec., 30 sec.,
60 sec., 120 sec.
Channel measurement: Integral number second from 2 sec. to 120 sec.
(depending upon the contents stored in the memory element)
3. Observable measuring minimum value: 0.01 sec./day or 0.1 sec./day
(Round off the franct ion to three or two dec ima l places.)
4. Observable measuring range: - 19.99"' +19.99 sec./day or
-199.9 - + 199.9 sec./day
5. Measuring system:
• Au tomatic start continuous measu ring system (The daily rate can be
measured automatically by placing the watch on the microphone.)
• Micro-computer system
6 . Display system: + or - four digits numerical segment display system
(The d igital display is extinguished in case of overflow or when signal is
not su pplied.)
7. Display time: Corresponding to the measuring t ime
8. Crystal oscillator device: Type: Oven,controlled device
Frequency: 4.32 MHz
Accuracy: 10~8
9. Power requirements:
A C 100, 110,120,200,220,240 V (±10%; 50-60 Hz)
Power consumption : 22 W
Power consumption of oven-control device (When the power switch is
turned off) : 3 "' 4 W
10. Operational temperature range and humidity : 0°C "' 50°C, Normal
humidity
11. Dimensions and weight: 110mm (H ) X 325mm (W) X 328mm (D);
7.2 kg.
12. Accessories:
• Electro -magnet ic/E lectric-field detection microphone DM -1 (Used for
analogue and dig ital electron ic watches) (includ ing 2 silver oxide
batteries-U.C.C. 301) ..... . . .. . . .. .. . ... . . ...... ... 1
• Earphone for signal monitoring (can also be used with Timegrapher
IC-70) .. . . .. . . . . . . . ..... . . . . . . . . . . . . . . . . . . . . . . . 1
• Power cord . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
• Earth cable . . .. . ....... . .. .. .. . . ... . . ... . . . .... .
• V inyl cover
- 16-
13. Optional accessories
• Stand-typed microphone K-410 (Used for balance wheel watches; can
also be used with t he Timegrapher IC-70)
• Hanger-typed microphone (Used for balance wheel mechanical clocks;
can also be used with the T imegrapher IC-70)
• Plate-typed probe K-401 and Clip-typed probe K-504 (Used for elec-
tronic clocks, can also be used with Timegrapher IC-70)
• Ultrasonic microphone US·32 (Used for digital watches with the
crystal oscillator, 32 KHz)

-17-
TROUBLESHOOTING

The following are no trouble and can be remedied by yourself.

• Even when the power switch is turned on, OT-99 will not work. (POWER
indicator (A) will not light up.)
1. Is the power cord plugged tight into the outlet?
- Connect the plug into t he out let thoroughly.
2. Is the fuse gone?
- Replace the fuse ( 1 A) with a new one. If the new is gone immediate-
ly, QT-99 is .fau lty.
• The INPUT indicator (Cl does not flash after the watch is placed on the
microphone.
1. Is the microphone plug connected to the input jack?
- Put the plug into t he jack t t:ioroughly.
2. Is the microphone switch (N) set properly according to the type of
watch?
- Set the microphone switch (N) to meet the t ype of watch to be
measured.
3. Is the LEVEL adjuster (J) set at a low level?
- Turn the LEV EL adjuster (J) clockwise or set it at AU TO.
4. Is the button of the watch selection switch (E) depressed for gate time
measurement?
- Depress the button (E).
• The INPUT indicator (C) will not flash only when a liquid crystal watch is
measured.
1. Is the microphone switch (N) set at LCD ON?
- Set t he microphone swi tch (N) at LCD ON.
2. Is the battery (U.C.C. 301) in the microphone run down?
- Replace the batteries with new ones.
• The earphone fails to detect the watch signal.
1. Is the earphone plug connected in position?
- Set the earphone plug tigh t in position.
2. Is the earphone or earphone cord broken?
- Replace the earphone. (Cry stal earphone)
• Noises are heard on the earphone.
1. Is there an electrical appliance radiating noises around?
- Tu rn off the noisy.electrical appliance.
2. Are the measuring environments acceptable?
- Change the location of OT-99 to · a proper place free of external
nolses and vibration.

- 18-
• Voices are heard on the earphone.
1. Are there any wireless stations near around which interfere with the
measuring system?
- Contact the w ireless stations for measures against interference.
• Daily rate is not displayed or it goes out soon after it is displayed.
1. Is the correct microphone used to meet the type of watch?
- Select the m icrophone according to the type of watch.
(Refer to "QT-99 Table of Measurable Ranges" .)
2. Is the correct button of the watch selection switch (E) depressed?
- Work the correct button. (Refer to "QT-99 Table of Measurable
Ranges" .)
3 . Is the daily rate of the watch beyond the measuring range?
4. Is the watch placed in the right position on the microphone?
- Listen to the watch signal over the earphone, and place the ri ght
position.
5. Is the microphone strongly affected by nearby electrical noise sources?
- Tu rn off the electri cal app liances that make noises to interfere with
the measuring system.
6. Is the level adjustment proper?
- Adjust the level as required.
7. Is the ordinary method·applied when the channel measurement must be
followed?
- Set the QT -99 for cha nnel measurement, and reset the watch as
requ ired.
• Daily rate changes quickly over a wide range.
1. Is the instantaneous daily rate of watch changing over a wide range?
2. Is the microphone strongly affected by nearby electrical appliances?
- Turn off the noisy appl iances.
3. Is the watch placed properly on the microphone?
- List en to the watch signal over the earphone, and place the r ight
position.
4. Is the level adjusted properly?
- Turn the LEVEL adjuster as requ ired.
5. Is the ordinary method applied when the channel measurement must be
followed?
- Set the QT-99 for channel measurement, and reset the wa tch as re-
qu ired.

- 19-
 Distributor: K . Hattori & Co .• Ltd.
Manufacturer: Fuji Electronic Industry Co., Ltd .

Tokyo, Japan
Printed in Japan