Cellular Parametric Test: Racal Instruments Wireless Solutions 6113
Cellular Parametric Test: Racal Instruments Wireless Solutions 6113
CODE DOWNLOAD setting up and testing BTSs. The less experienced user can use the
Code download of the manufacturer specific application files to the test sequences for quick set up of the 6113 and repeatable, error free
BTS is another important feature of the 6113. This allows a BTS that testing.
may not already be connected to a BSC to be tested with the same Ease of use is further facilitated by the use of the soft keys, a spin
code that will be used during normal operation, i.e. "real environ- wheel and a numeric keypad along with a simple, logical menu struc-
ment" testing. ture.
CONFIGURATION PARAMETER SETTINGS
Configuration of the BTS can be performed by the 6113 allowing the Parameter settings for all the necessary testing variants are accessible
user to place the BTS in a state ready for testing. During testing, the for the experienced user. For the less experienced user a suggested
6113 can control the important parameters of the BTS including; default value, based on GSM recommendations, is available. The
channel number, timeslot, output power of the transmitter, receiver 6113 has a further ability to store all of the set-up variables in a
diversity and the transceiver unit under test. "parameter file" which can be used to recall settings before testing
In addition, the 6113 extracts the BTS measurement reports (RX begins.
LEV, RX QUAL) for the channel under test, from the A-bis interface SINGLE TEST MODE
and reports them to the user continuously throughout the testing
Single Test mode allows the user to individually select from a wide
process. The 6113 also displays error or fault reports that the BTS
range of tests. A full range of settings is available for the user to spec-
produces on the A-bis interface.
ify including overall PASS/FAIL criteria. The test is then run with a
RF Tests - Parameters 19 JUN 1998 12:00:00 Edit
full set of results returned including the PASS/FAIL indication.
Parameter
Parameter Value Default TEST SEQUENCE MODE
FER Limit 0.100 0.100 %
Class Ib Limit
Class II Limit
0.400
2.000
0.400
2.000
%
%
Test Sequence mode allows the user to run a complete sequence of
Cancel
Expected Power Level
Power Level Limit (+/ -)
0.0
+6.0
0.0
+6.0
dBm
dB single tests using only one or two keystrokes, allowing controlled and
All Frequency Error Limit (+/ -)
RMS Phase Error Limit
48.00
5.00
48.00
5.00
Hz
deg repeatable testing.
Peak Phase Error Limit 20.00 20.00 deg
Reset Power Profile Mask Checking Off Off
All Mod Spectrum Mask Checking Off Off
Power Tracking On On
Display Holding Off Off
Allowed list : On, Off More...
While in Multimode, most parameters such as channel, slot number, FREQUENCY STANDARDS
BTS power and RF level are easily changed. Any control commands Under normal circumstances the supplied frequency standard is
necessary to perform the change are automatically generated making more than adequate, however, in a laboratory or production situation,
the 6113 very intuitive to operate. a higher performance may be required. The optional internal stan-
ADDITIONAL FACILITIES dard can achieve a stability of 0.03 ppm per year.
INSTRUMENT CONTROL
Tes t Running : Transm itter Tes t 19 JUN 1998 10:10:19 Stop /
Edit
panel keyboard or remotely via IEEE488 GPIB interface. This allows Error 0
-10
Tes t
the test set to be included as part of a larger automatic test system. -20 (The Power Profile m as k varies according to the type of
Tes t Full
d BTS, and according to type of channel - i.e. BCCH or TCH.
Res ults B -30 Screen
Whichever control method is used, particular attention has been paid Modulation
-40
Refer to Section 7 Manufacturer -Specific Inform ation
for details ). Horizontal
-50
-70
Configure 0 20 40 60 80 100 120 140 Vertical
Printer Bits
MEMORY CARDS T.A. : RXLEV: RXQU AL: S D
-70 : +10 dB
EXIT
The PC memory cards and hard disks provide the user with the abil-
GPIB : 20 10 MHz Rslts : OFF Offs ets : 0.00 dB F R
ity to store and recall a number of instrument set-ups, test sequences 6113 Digital Radio Test Set can be easily carried to remote sites
and configuration files for carrying out various tests on differing BTS
types. New test sequences can be generated from the front panel Supplied Option 04F
using a special learning facility and then stored on the memory card. Frequency 10 MHz 10 MHz
In this way tests can be selected, limits and parameters changed, and Stability*: ±1 x 10-7/year ± 3 x 10-8/year
printing controlled, guaranteeing total control and repeatability of 0° to 50°C: <±1.7 x 10 -8 <±1 x 10 -8
testing. Warm up time: 30 minutes 30 minutes
*Ageing after 30 days of continuous operation
LIVE TESTING (OPTIONS 54 AND 310)
The RIWS 6113 Live Testing option addresses the growing demand
by network operators to be able to evaluate the performance of BTSs
without first taking them out of service and losing call revenue.
The Live Testing options add two further modes of operation to the
6113's normal A-bis control and auto sequence modes. A-bis control
provides the most detailed measurements and diagnostics on a BTS
but requires it to be taken out of service. All of the Live Testing modes
are aimed at in-service testing and do not affect normal call traffic.
the 6113's unique scanning feature to locate the CCH and any asso- including the antennas, masthead amplifiers, interconnecting cables,
ciated traffic channels. Once located, the 6113 will automatically lock etc.
on and decode it. The 6113 will then non-intrusively monitor all of the
It is also possible to monitor the performance of the site from any
following parameters on any selected channel and time slot.
point within the cell coverage area using the Cell Integrity Test Suite
· Transmitter power and power profile automated functions. The 6113 emulates all the network functionali-
ty required to make these tests, thus obviating the necessity for an A-
· RMS phase error
bis connection to the network BSC.
· Peak phase error
The only additional equipment required to carry out these cell per-
· Frequency error (Relative to the 6113 time base) formance checks are a standard GSM mobile handset (supplied), a
valid network SIM card and a RIWS CIT SIM card (supplied).
· Modulation spectrum
MAIN FEATURES
The measurements are displayed as precise numerical readings along
with easy to read bar graphs. Exceeding the recommended limits The user may check the following aspects of a GSM based cell site:
causes the bar to change color, quickly high-lighting a possible fault · Integrity and correct connection of all cell antennas, masthead
condition. amplifiers and cabling.
FULL CALL SET UP, RECEIVER SENSITIVITY · Quality of speech using a standard mobile terminal.
Measurement Once the performance of the transmitters has been
· Automated sequential call placement utilizing all timeslots* and all
verified, the next logical step is to check the operation of the receivers.
carriers.
As with any digital receiver testing, this is accomplished with a bit
error ratio (BER) measurement. · Combined uplink and downlink BER measurements.
Using the call set-up facilities of the 6113 a call is established using a · Comparison of uplink and downlink losses over the air.
normal network SIM. Once a traffic channel has been assigned, the
· Equalization of uplink and downlink losses - cell or antenna balanc-
instrument can then inject a variety of test patterns. Using the high
ing. (Worldwide patents pending)
impedance A-bis input, the entire receiver traffic is monitored and
the test pattern automatically located. Once synchronized, a contin- *with the exception of timeslot 0
uous BER reading is available. The signal level seen
BRIEF TEST SUMMARY
by the receiver can then be varied manually or automatically to deter- The following tests are available within the RIWS Cell Integrity Test
mine the sensitivity. Suite for the 6113.
For more detailed information there is also available a separate menu · 6113 Originated Call with Mobile Audio Loopback (using Racal
displaying the FER, Class Ib and Class II Minimum, Maximum and Instruments test SIM)
Mean BER readings.
· 6113 Originated Call with Audio Loopback.
LIVE TESTING OPTIONS
· 6113 Originated Call with Audio Loopback AND Mobile Audio
Two Live Testing options are offered for the 6113. The first (Option
Loopback (using Racal Instruments test SIM)
310) provides just the software associated with call setup and Live
Testing, this is useful where individual transceivers can be isolated · Mobile Originated Call with Mobile Audio Loopback (using Racal
such as when testing microcells and where a low loss RF connection Instruments test SIM)
can be made to the base station.
· Mobile Originated Call with Audio Loopback
A second option (Option 54) adds a sensitive and selective receiver
· Mobile Originated Call with Audio Loopback AND Mobile Audio
unit, which then allows the instruments to discriminate the want-
Loopback (using Racal Instruments test SIM)
ed signal from nearby unwanted signals, and additional gain compen-
sates for a significant path loss. It is also available as a retrofit option · Antenna Balancing
for existing 6113 users. (Note: Option 310 is always included with
DETAILED TEST DESCRIPTIONS
option 54).
Please refer to the diagram below for details of test equipment con-
CELL INTEGRITY (OPTION 311) nections. It can be seen that the 6113 acts as a BSC or network sim-
The Cell Integrity Test Suite provides important new functionality for ulator that has full control of the BTS. No RF connections are made
the RIWS 6113 GSM digital radio BTS test set. This new software to the 6113. All antennas and external equipment are connected to the
allows the user to assess the total integrity of a complete cell site, and BTS as normal.
will normally form part of the complete commissioning and integra-
tion procedure.
Whilst the 6113 when in A-bis Control Mode allows the user to check
the performance of the complete BTS, the new Cell Integrity Test
Suite allows the user to assess the performance of the site as a whole,
6113.qxd 07/Jun/2005 13:11 Page 5
SPECIFICATION VSWR
≤ 1.2:1
TEST CAPABILITY
Connector
Transmitter Tests
TNC female
Cell Control Channel
RF IN/DUPLEX CONNECTOR
Generation
Impedance
Bit Error Ratio
50 Ω Nominal
Phase/Frequency Error
VSWR
Power Level/Steps
≤ 1.2:1
Power Profile
Connector
Modulation Spectrum
N Type female
Receiver Tests
MEASURING RECEIVER
Traffic Channel Bit Error Ratio
Traffic Channel Absolute Frequency Range
LEVEL Signaling
-47dBm to -120 dBm into 50 Ω (Duplex mode) E1 (option 52) either 75 Ω BNC or 120
0.1 dB
MEASUREMENTS
Accuracy
PHASE ERROR
±1.5 dB GSM900(>-110 dBm) (Simplex)
Range
±1.8 dB GSM1800 (>110 dBm)
10º RMS, ±30º peak
±1.8 dB GSM1900 (>-110 dBm)
Accuracy RMS
Accuracy
<0.3º at 5º phase error
±1.5 dB GSM900(>-110 dBm)1 (Duplex)
Accuracy Peak
±1.8 dB GSM1800 (>-110 dBm)1
±7.2º
±1.8 dB GSM1900 (<-110 dBm)1
FREQUENCY ERROR
RF OUT CONNECTOR
Range
Impedance
±2.5 kHz
50 Ω Nominal
6113.qxd 07/Jun/2005 13:11 Page 7
Dynamic Range 45 to 66 Hz
Internal 210 mm
When ordering please quote the full ordering number information. Option 220 Ericsson Software
Option 230 Italtel Software
ORDERING INFORMATION Option 235 Siemens Software
Model 6113E BTS Test Set with encryption, option 10R Option 255 Motorola Software
Option 04F Very High Stability Frequency Standard Option 285 Interwave Software
Option 08 GSM 850 Operation Option 300 AIME Software - Air Interface Monitor and Emulator
Software
Option 10R Encryption retrofit kit
Option 310 LIVE Testing
Option 51 T1 A-bis Interface†
Option 311 Cell Integrity Testing Software
Option 52 E1 A-bis Interface†
Option 60 Rack Mounting SUPPORT OPTIONS
Option 61 Padded Carrying Bag A number of support options are available that ensure equipment is
kept up to date and calibrated. Software support ensures that the lat-
Option 62 Rigid Transit Case
est software is provided. This is important where base station software
Option 64 Front Panel Protection Cover is revised by the base station manufacturer, and where new features
and enhancements are made available.
Option 70 GSM/DCS1800/PCS1800 test SIM for test set
Extended warranty and calibration is also available. Request Product
Option 71 Miniature SIM adaptor for test set Support Information data for full details.
Option 76 Memory Card, 256 kbyte Option S1 One year Software Support
Option 77 Memory Card, 2 Mbyte Option S2 Two year Software Support
Option 78 Flash Memory Card, 10M byte Option S3 Three year Software Support
Option 79 Removable Hard Disk Drive 1 Gb Option C1 One annual calibration
Option 90 Test Set/PC RS232 download cable, (9 way D-type) Option C2 Two annual calibrations
Option 91 Test Set/Printer RS232 cable (25 way D-type) Option E2 One year extended warranty
Option 92 Test Set/Printer parallel cable Option E3 Two year extended warranty
*A least one of the option 01,02,03 must be ordered with the basic Option W2 One year extended warranty with calibration
model and options 02 and 03 cannot be installed together.
Option W3 Two year extended warranty with calibrations
†At least one of option 51 or 52 must be ordered with the basic model