Submarine and

buried cable test

equipment
Supporting your surveying,
locating and fault finding requirements
Tinsley Precision Instruments is a leading provider of equipment
for survey, location and fault finding of submarine and buried Our product range
cables supporting the increasing demand for efficient subsea cable
maintenance. We provide the tools to locate and identify damage to 4 Portable Short-Haul Submarine Cable
fibre optic, telephone and power cable systems to ensure that repairs Test Set Model 5903
can be performed in a timely manner, maximising the return on your
cable system investment. 5 Short Haul Submarine Cable Test Set
Model 5910/Model 5910R
We offer complete end to end solutions, including equipment for
use on board ships for the detection of submarine cables buried or 6 Electroding Generator
laid on the sea bed and also identifying different faults such as fibre Model 5915
faults, shunt faults and complete breaks. Our portfolio also includes
submarine cable survey and tracking systems, devices that aid locating 7 Electroding Detector
and identifying telephone cables, cable survey systems designed for Model 5916
use by divers working in areas where it may not be practical to use an
R.O.V. and several portable devices including those used onshore to 8 Beach Probe and Battery Powered
identify cables on the beach. Portable Electroding Detector
Models 5917D/5918
Supporting are extensive range of submarine cable testing equipment,
Tinsley provides calibration, service and repair services together with 10 Cable Termination Unit
technical support and advice from our in-house experts. Model 5941

Tinsley – keeping the world connected. 11 Submarine Cable Survey & Tracking
System Model 5930 Mk II

Contents 3
 Portable Short-Haul Submarine Cable Test Set
Model 5903

The Tinsley 5903 Long Haul Submarine Cable Test Set brings the latest
technology to the tried and tested DC methods of cable fault location for
both repeatered and un-repeatered systems.

The more common test procedures which are safety a number of interlocks operate
associated with the location of types of cable disconnecting all power before access is
fault such as ‘open circuits’ and ‘shunt faults’ allowed to the high voltage areas.
are preprogrammed into the instrument.
The setting up of the instrument is via
This allows the procedure to be carried out
the menu driven touch screen display.
automatically therefore eliminating operator
This display is also used to indicate the
errors and reducing the uncertainty of the
progress of a test procedure during its
predicted fault position.
implementation. The Ethernet interface
The instrument may be set for a wide is designed for high speed full duplex
range of voltage and current limits making communication between modules.
it suitable for use with most submarine
All functions may also be controlled via a
communication cable systems.
computer and data obtained may be stored
Safety being an important feature, the for future analysis.
instrument gives a continuous indication
This interface may also be used to enable
of the state of charge of the cable under
two 5903’s to be connected to communicate
test and will automatically disallow current,
with each other when carrying out double
voltage or polarity changes to be made
ended tests such as ‘no loss of current.
until any voltage on the cable has fallen to
a level which is safe for both the cable and
the instrument. To ensure complete operator

SPECIFICATIONS CAPACITANCE METER (CAP OR IC)

See the tables below for product specifications. Direct reading capacitance measurements between 1µF and 1F. Incorporating automatic
compensation for leakage and series resistance evenly distributed along cable length.

Ohmeter – Conductor Resistance Measurement Range Resolution Accuracy* Measurement Cycle

Resistance Range Display Resolution Accuracy*

1µF 0.001µF ±5% 5mA / 1S / 5000V
1Ω to 9.9Ω 0.0001Ω ±2%
10µF 0.01µF ±0.6% 5mA / 10S / 2300V
10Ω to 99.9Ω 0.001Ω ±1%

100Ω to 999.9Ω 0.01Ω ±0.5% 100µF 0.1µF ±0.3% 10mA / 10S / 2500V

5000.01Ω to 10000Ω 0.1Ω ±0.05%

1mF 1µF ±0.3% 20mA / 100S / 2500V
Current Control
10mF 10µF ±0.3% 50mA / 500S / 2500V
Polarity Selectable positive ‘+’ or negative ‘-

Level May be set from 100µA to 1A with a resolution of 100mF 100µF ±0.3% 100mA / 1000S / 2500V
100µ
1F 100µF ±0.3% 100mA / 5000S / 5000V
Compliance Selectable at any value between 10V to 6KV with a
resolution of 0.1V. Preset limits 50V, 100V, 500V, 1000V
and 5000

Measurement Range Display Resolution Accuracy MEGOHMMETER - INSULATION RESISTANCE MEASUREMENT

Polarity selectable positive ‘+’ or negative ‘-’
20mA 0.001mA ±0.025%

200mA 0.01mA ±0.025% Range Applicable Resolution Accuracy

Voltage
2A 0.1mA ±0.025%
105Ω 100V to 1000V 100Ω ±0.1%
Voltage Control mode: Level may be set from10V to 6000V with resolution of 0.1

10V to 94.999V 0.001V ±0.02% 106Ω 250V to 2500V 1KΩ ±1%

95V to 949.99V 0.01V ±0.02%

107Ω 300V to 2500V 10KΩ ±1%
950V to 10KV 0.1V ±0.02%
108Ω 500V to 2500V 100KΩ ±2%

*Accuracies indicated based on measurement of Standard Resistors and Capacitors

109Ω 1000V to 2500V 1MΩ ±2%
Please note: Because of the technical nature of Submarine Cable Testing Equipment
and the use and support requirements across international boundaries, the 100mF 100µF ±0.3% 100mA / 1000S / 2500V
equipment can only be purchased direct from the manufacturer: - Tinsley Precision
Instruments in the UK and not through international agents. 1F 100µF ±0.3% 100mA / 5000S / 5000V
For more information about this product contact Tinsley.

4 Model 5903
Short Haul Submarine Cable Test Set
Model 5910/Model 5910R

The Tinsley 5910 and 5910R (rack mount version) Short Haul Submarine Cable
Test Set brings the latest technology to the tried and tested DC methods of
cable fault location.

The Tinsley 5910 is a portable Short Haul Submarine Cable A basic electroding generator function is included which can
Test Set that brings the latest technology to the tried and assist the cable repair vessel in locating the cable on the sea bed
tested DC methods of cable fault location. The Tinsley 5910R prior to retrieval and repair.
is a rack mount version of the 5910 portable Short Haul
Submarine Cable Test Set.
Common test procedures which are associated with the location
of cable fault such as ‘open circuits’ and ‘shunt faults’ are
pre-programmed into the instrument. This allows the procedure
to be carried out automatically therefore eliminating operator
errors and reducing the uncertainty of fault position prediction.
The instrument may be set for a range of voltages and currents
making it suitable for use with most un-repeatered submarine
communication cable systems.
The RS232 interface is designed for full duplex communication
with the instrument. All functions may be controlled via a
computer and obtained data may be stored for future analysis.
This interface may also be used to enable two 5910’s to
communicate with each other via a computer when carrying
out double ended tests such as ‘no loss of current’.

SPECIFICATIONS CAPACITANCE METER (CAP OR IC)

See the tables below for product specifications. Direct reading capacitance measurements between 1µF and 1F. Incorporating automatic
compensation for leakage and series resistance evenly distributed along cable length.

Ohmeter – Conductor Resistance Measurement Range Resolution Accuracy (using Measurement Cycle
standard caps)
Resistance Range Display Resolution Accuracy
(within compliance of 1V to 140V) 0.05 to 2µF 0.001µF ±0.005µF 2 secs @ 1µF

0.2Ω to 100.00Ω 0.01Ω ±0.2 Ω

2 to 20µF 0.001µF ±0.2% 2 secs @ 10µF
100.00Ω to 1000.00Ω 0.1Ω ±0.2W up to 200Ω
±0.1% above 200Ω 20 to 200µF 0.01µF ±0.2% 20 secs @ 100µF
10kΩ to 10kΩ 1Ω ±0.1% at 1kΩ reducing
to 200 to 2000µF 0.1µF ±0.2% 200 secs @ 1000µF
±0.2% at 10kΩ

10kΩ to 100kΩ 10Ω ±0.2% at 10kΩ reducing

to MEGOHMMETER - INSULATION RESISTANCE MEASUREMENT
±2% at 100kΩ Voltage settings +50V, 100V, 250V, 500V, or 1000V
Polarity selectable positive ‘+’ or negative ‘-’
Current Control

Range Resolution Accuracy Range Applicable Accuracy

Voltage
0.5 to 10.0mA 0.1mA ±2µA
±1dB (105 to 108 Ω)
105Ω to 109Ω 50V, 100V
10.1mA to 100mA 0.1mA ±20µA using Standard Resistors

Polarity Positive ‘+’ or negative ‘-’ selectable by ±1dB (106 to 109 Ω )

106Ω to 1010 Ω 250V
thumbwheel switch using Standard Resistors

±1dB (107 to 1010 Ω )

107Ω to 1011Ω 500V, 1000V
using Standard Resistors
ELECTRODING GENERATOR (GEN):
Output polarity either positive to LINE or negative to LINE

Control Constant current - compliance 0.1 to 50V ±0.005µF 2 secs @ 1µF

Frequency 25Hz or 16.7Hz ±0.2% 2 secs @ 10µF

Output 50mA + 50mA sin wt ±0.2% 20 secs @ 100µF

Model 5910/5910R 5
 Electroding Generator
Model 5915

The Tinsley Electroding Generator, type 5915, has been developed

with British Telecom to locate submarine telephone cables. The method
employed is the well-established electroding technique.
Principle of operation
The Electroding Generator is a low frequency oscillator with
a sine wave output capable of delivering up to 500mA at 500
Volts peak to peak at any frequency from 5Hz to 99.9Hz. The
frequency is selected by digital thumbwheel switches, and peak
current is set via a front panel rotary control. The current and
voltage levels are clearly displayed on Front Panel Precision
Analogue Meters.
The current waveform is controlled to be sinusoidal. The test
current has a DC bias to improve the sensitivity detection over
longer distance. The test current can be applied in either the
forward direction only or in the reverse or forward bias, as
required. Longer cable can normally be electroded by energising
in the reverse direction.
A crystal controlled oscillator ensures that the frequency does
The unit is self-contained, desktop mounting, enabling tests to not drift while testing is in progress. Output connections
be carried out without the power feed connected to the cable are made by permanently connected probes, which are fully
under test. shrouded. A safety circuit disables the generator output whilst
the probes are being applied to the cable under test.
The 5915 Tinsley Electroding Generator is intended as an aid to
cable repair ships in locating and identifying telephone cables. A special compartment on the rear of the instrument is provided
The Electroding Generator energises the submarine cable with for stowing the output probes when not in use. A frequency
a low frequency sine wave signal of up to 500mA at 500 Volts monitor point (square wave at signal frequency) is provided on
peak to peak. the rear on the instrument. Output level is TTL compatible.
The Electroding Generator is located in the terminal station
normally nearest to the fault area and connected to the cable
under test by means of two safety probes built in the instrument.

SPECIFICATIONS
See the tables below for product specifications.

Continuously adjustable current regulated DC – Weight and dimensions

Output
sine wave modulated

Minimum 75mA modulated at ± 25mA (50mA - 100mA pk-pk). Size 300H x 512D x 470W (mm) approx.
Current Range
Maximum 275mA modulated at ± 225mA (50mA - 500mA pk-pk)
Weight 26.5kg approx.
Current Control Continuously adjustable by 10-turn potentiometer

Mains Switching Key operated. The key is removable only in the off position
Modulation Frequency
Voltage 500V peak max
Range 5Hz to 99.9Hz, selected in 0.1Hz steps.
Output polarity is selected by means of a 3-position key switch
Polarity
(Positive, Off, Negative) The key is removable in any position
Accuracy ± 0.01Hz
Both current and voltage are continuously monitored by
Monitoring
individual front panel meters of accuracy 3% F.S.D. Stability 0.03% Long term (12hr). 0.003% Short term (10min).

Output distortion THD 5%

Controls Adjustable by thumbwheel edge switches.

Power requirements
105V to 125V or 210V to 250V; 50Hz to 60Hz, (selected via rear panel).
Power applied by operation of a key switch. Key is removable in the ‘Off’ position only.
Mains input circuit is fused. Input is via I.E.C. socket.

6 Model 5915
Electroding Detector
Model 5916

The Tinsley 5916 Electroding Detector is the ideal equipment for use on board
ship when the electroding method is being employed for the detection of
submarine cables buried or laid on the sea bed.
This lightweight and portable instrument can be mains
powered or can operate for several hours from its own internal,
rechargeable battery pack. Ideally suited for use with the Tinsley
Electroding Generators, the 5916 will also operate with any
generator operating in the frequency range 4 to 40Hz.
The Electroding Detector is a high gain low frequency selective
amplifier to detect the electric field from a submarine cable
powered by the Tinsley 5915 Electroding Generator or similar.
The detector amplifies, filters, indicates and records signals of
the selected frequency in the range 4Hz to 40Hz. At the highest
gain setting a 1µV RMS input signal of the correct frequency
will give a full scale reading on the analogue front panel meter
and the optional chart recorder. The detector is completely self-
contained in a splash-proof IP65 portable case. Rechargeable
batteries are included in the case and also a mains power
supply which will recharge them. External batteries may also be
used. A clock/timer is incorporated on the front panel to help
For identification purposes, the electroding generator may be
synchronise detected events.
keyed on and off periodically. Once the cable signal has been
To use the detector the signal input terminals are connected to identified and confirmed, the ship then follows the cable on a
the customer’s receiving probes, the exact operating frequency zigzag course until the signal disappears. When this happens,
is selected on the thumbwheel switches and the gain switch is the fault or break has been located. Use of NAVSAT on a marker
adjusted to obtain a useful indication of the signal.
buoy would mark the point where the signal was last detected.
Further probe runs may be made for a more precise fix of the
Principle of operation fault position.
The detector is used to locate submarine cables in water up
to 180 metres (100 fathoms) in depth. A signal in the range of SPECIFICATIONS
4Hz to 40Hz is transmitted down the submarine cable by an See the table below for product specifications.
Electroding Generator such as the Tinsley type 5915 unit. This
4Hz to 40Hz in increments of 0.1Hz thumbwheel selection.
signal is picked up by a set of trailed probes connected to the Frequency
Built-in test oscillator
detector. The detector and receiving probes are normally aboard
Detector Bandwidth 0.5Hz
the repair ship. However, as they are portable, the detector
may be operated from any locally available ship or launch. The Sensitivity 1uV RMS for full scale deflection
received signal is processed and passed to the analogue front
Input Impedance Balanced low impedance inputs via 4mm terminals
panel meter and, if fitted, chart recorder.
Auxiliary Input Socket for external probes
Normally, the Electroding Generator, Tinsley type 5915, is located
in the submarine cable terminal nearest to the fault area. Built-in rechargeable batteries having life of over 5 hours
The Electroding Detector, Tinsley type 5916 is aboard the ship. of continuous use

When the ship is in the vicinity of the cable area, the 5915 Power External batteries, +12V and-12V
Electroding Generator is powered, thus applying the low
Mains supply, single phase, 230V or 115V AC
frequency signal to the cable under test. At these frequencies,
the field of the signal extends into the water surrounding the Display Analogue meter with battery and signal test
cable for a considerable distance. The ship would normally steer
Event Timing Front panel Digital Elapsed Timer and Clock
a course to cross the cable on the landward side of the expected
fault position. Before this position is reached, the ship launches Recorder Optional chart recorder
the receiving probe(s) which will then connect to the detector.
Event marker button is incorporated on the front panel
Event Marker for marking the recording chart and relay closure for
The detector is set (by thumbwheel switch) to the frequency
external Event signal
being transmitted by the electroding generator on shore.
Typically 180 metres (100 fathoms) but depths of up to
As the ship crosses the cable, the field of the signal current on 300 metres could be possible. However, this is limited by
the cable induces a voltage into the probe(s). This signal is then Depth Range external factors:- Signal to noise ratio and attenuation
processed by the electroding detector and a deflection on the of cable and the lateral distance at which the ship is
operating away from the cable
meter is registered. This may be recorded by the optional built-
Portable self-contained splash-proof IP65 case 470 x 360 x
in chart recorder. Size
175mm

Weight Approximately 15kg.

Model 5916 7
 Beach Probe and Battery Powered Portable
Electroding Detector Models 5917D/5918

The Electroding Probe and Detector system is a high gain low frequency
selective Receiver/Amplifier to detect the electromagnetic field from
a submarine cable energised by the Tinsley 5915 Electroding generator
or similar.

The 5917 Beach Probe and 5917D Divers Probe are inductive
probes suitable for receiving 15 to 30Hz signals emanating
from a suitably energised submarine cable.
The 5918 detector amplifies, filters, and indicates the signal
received at the selected frequency. At the highest gain setting
a 10µV RMS input signal at the correct frequency will give a
full scale reading on the analogue front panel meter.
The 5918 electroding detector is completely self-contained in a
portable carry case with shoulder strap. Integral rechargeable
batteries are included and a separate mains power module is
supplied to recharge them.
In use the 5918 detector is connected to the receiving probe,
either a Tinsley type 5917 Beach probe or 5917D Divers Probe.
The exact operating frequency is selected on the thumbwheel
switches and the gain switch is adjusted to obtain a useful
indication of the signal.
A frequency of either 16.7Hz or 25Hz is recommended when
using the 5917 Probes. An audible output signal is available
which can be heard by using the plug-in headphones supplied.
The larger the signal received the higher the frequency heard.
A volume control is provided for adjustment of loudness.

Principle of operation
The 5917/5918 Probe and Detector System is used either on Normally, the Electroding Generator, Tinsley type 5915, is
land, or on the beach. The 5917D Divers Probe can also be located in the submarine cable Terminal Station nearest to
used in up to 50-metre water to locate submarine cables. the search area. When the Electroding Detector System is
in the vicinity of the cable, the 5915 Electroding Generator
A tone in the range of 16 Hz to 25 Hz is transmitted down
is powered, thus applying the low frequency signal to the
the submarine cable by an Electroding Generator such as the
cable under test. At these frequencies, the field of the signal
Tinsley type 5915 unit. This signal is picked up by a Tinsley
extends into the land and water surrounding the cable for a
5917 or 5917D Probe connected to the 5918 Detector.
considerable distance.
The 5818 Detector and 5917 Beach Receiving Probe would
The person holding the 5917 Probe would normally walk/
normally be held by a person walking along the beach.
swim a course to cross the cable on the landward side of any
However, as they are portable, the detector may be operated
expected cable fault position with the probe in its horizontal
from any small boat or launch to search over shallow water.
position at right angles to the cable.
The 5917D would normally be held by a diver and would be
connected to the 5918 in a boat/ship via an umbilical cable. It
is suitable for use in depths of up to 50 metres. The received
signal is processed and passed to the analogue front panel
meter and headphones audio output.

8 Model 5917D/5918
The Detector is set (by thumbwheel switch) to the frequency
being transmitted by the Electroding Generator. A frequency
of either 16.7Hz or 25Hz is recommended. As the detector
crosses the cable, the field from the signal current in the
cable induces a voltage into the probe. This signal is then
processed by the Electroding Detector and a deflection on
the meter is registered. This may be heard by the operator as
a high-pitch frequency from the headphones.
For identification purposes, the Electroding Generator may be
keyed on and off periodically. Once the cable signal has been
identified and confirmed, the person then follows the cable
on a zigzag course to plot the position of the cable, or until
the signal disappears. When this happens, a fault or break has
been located.
Further tests may be made for a more precise fix of the cable
position by using the probe in a vertical orientation. In this
case a null is registered when the probe passes exactly above
the cable.

SPECIFICATIONS
See the tables below for product specifications.

5917 Beach Probe Specifications 5918 Detector Specifications

Suitable for detecting the electromagnetic field from a 4Hz to 40Hz in increments of 0.1Hz thumbwheel selection.
Sensitivity submarine cable carrying 20mA current at a distance of 10 Frequency Built-in test oscillator. However, when using the 5917 Probe
metres from the cable use either 16.7Hz or 25Hz

Frequency Range Suitable for 15 to 30 Hz (16.7 or 25Hz recommended) Detector Bandwidth 0.5Hz

ON/OFF Switch In handle to conserve battery power on 5918 Sensitivity - max 10uV RMS for full-scale deflection on range 7

Size 110cm long handle 40cm long probe Input 7 Way DIN Socket for external probe

Weight 6kg Built-in rechargeable batteries having life of over 5 hours of

Power
continuous use. 12V 1.2 AH Lead Acid

Charger Mains powered, single phase, 90 to 260V AC 50/60Hz

5917D Divers Probe Specifications
Display Analogue meter with battery and signal test
1 5932 Detector
1 5931C1/50m Underwater Cable 50 metre length Typically 10 metres. However, using 5917 Probes this is
5917D consists of Range of location/ limited by external factors:- e.g. Signal to noise ratio and at-
1 5917D-301 Tuning Box for 16.7/25Hz
1 5917D-302 Leads from tuning box to 5918 depth tenuation along cable i.e. the distance at which the detector
is operating away from the generator
Suitable for detecting the electromagnetic field
Sensitivity from a submarine cable carrying 100mA current at a Portable self-contained unit in a carrying case
Size
distance of 10 metres from the cable 250 x 250 x 150mm

Frequency Range Suitable for 15 to 30 Hz (16.7 or 25Hz recommended) Weight Approximately 5kg

ON/OFF Switch Mounted on 5917D-301 Tuning Box Assembly Recorder Optional chart recorder

5932 Probe 380 x 150 x 35mm Event marker button is incorporated on the front panel
5931C/50m Cable - 50m length Event Marker for marking the recording chart and relay closure for
Size external Event signal
5917D-301 - 145 x 120 x 90mm
5917D-302 curly cable 0.9m coiled 2.2m stretched Typically 180 metres (100 fathoms) but depths of up to
5932 2kgm in air 300 metres could be possible. However, this is limited by
5931C/50m 7kg Depth Range external factors:– Signal to noise ratio and attenuation of
Weight cable and the lateral distance at which the ship is operating
5917D-301 0.55kg
5917D-302 0.20kg away from the cable

Portable self-contained splash-proof IP65 case

Size
470 x 360 x 175mm

Weight Approximately 15kg

Model 5917/5918 9
 Cable Termination Unit
Model 5941

The Tinsley 5941 CTU is the ideal termination unit for non-repeatered
submarine cables. It offers a simple method of selecting an open or short
circuit condition and a safe means of discharging the cable.
It offers a simple method of selecting an open or short circuit condition
and a safe means of discharging the cable. The unit is designed to
enable the Test Engineer to safely and simply connect other Tinsley test
instruments to the system for fault location and electroding.
The Tinsley 5941 CTU also incorporates a Cable Condition Monitor. Any
changes in the Submarine Cable electrical characteristics are automatically
detected and an alarm is triggered. An output from the alarm is also
available for connection to outside devices.
The unit can be connected to the cable via a dedicated cable connected to
the fibre optic cable metallic conductor.
Alternatively, the fibre optic cable can be routed into the CTU with a direct
path through the unit for the optical fibres. Options that can be set at the
time of installation enable the unit to be used with a wide range of cable
lengths and types.

SPECIFICATIONS
See the tables below for product specifications.

Input Supply Voltage 36V to 60V DC

Maximum Supply Current 1.5A

Open Circuit Output Voltage (Input 48V) -100V

Output Voltage Stability (max. load & supply variation) ± 1V

Short Circuit Current - Normal Drive 213 ± 13 mA

Short Circuit Current - Hard Drive 297 ± 35 mA

Alarm Level Range -333 mA to + 333 mA

Alarm Level Stability (with load, supply and temperature variation) ± 2.5%

Alarm Contacts Rating 100V 0.5A DC

Maximum Allowable Cable Power 600V Peak Voltage

4A Current Optional chart recorder

Operating Temperature Range 0ºC to 40ºC

Surge Arrestor Rating

Max. Surge Current 20kA

DC Spark Over Voltage 700V

Impulse Spark Over Voltage 1400V

10 Model 5941
Submarine Cable Survey & Tracking System
Model 5930 Mk II

The Tinsley Submarine Cable Survey System is designed for use by divers
working in areas where it may not be practical to use an ROV.

With a low frequency electroding tone applied to the cable, the Electronic tuning enables the system to precisely detect the
system can be used to locate cables buried beneath the sea bed frequency of the tone applied to the cable. The Single Sensor
and to establish their burial depth. probe Model 5932 is used for fast location of cables. It does not
The system consists of a hand-held Sensing Unit (type 5931) that give burial depth measurement.
is designed to be easily manoeuvred whilst under water. An audio Any standard Electroding Generator operating within the
output to the diver allows the Sensing Unit to be positioned at frequency range 16 to 100Hz may be used with the system.
a point with the highest signal level. This corresponds to a point Typically the Tinsley Model 5915 or the electroding function of
directly over the cable being surveyed. Once the cable is precisely the Tinsley Model 5910 Submarine Cable Test Set could be used to
located the Sensing Unit is placed on the sea bed at that point and
energise the cable.
a measurement of burial depth made.
The Sensing Unit is connected to the shipboard Display Unit Features
(Type 5930) via an umbilical cable. The Display Unit uses • Accurate Cable Burial Depth Measurement
microprocessor technology to compute the data received from
• Computer Interface with Touch Screen control
the sensor and to display the information as the burial depth of
the cable. • Integral Test Function
• Surface and Divers Audio Output of Signal Strength
Many special functions are incorporated within the Display Unit.
It features a Spectrum Analyser that is used to identify any areas • Dedicated GPS Data Input
of the frequency range for the Survey System that exhibit a • Wide Frequency Range
particularly high level of electromagnetic interference. The use of
• Spectrum Analyser Function
this frequency can then be avoided whilst cable surveying in that
particular geographical location. • Oscilloscope Function

Digital filtering of the input signal is used to ensure that the • Rated to 50 metres water depth
instrument displays clear and unambiguous results. • Two Probe Inputs

SPECIFICATIONS
See the tables below for product specifications.

Burial Depth Accuracy : Basic Accuracy ±5% of measurement Burial Depth Range : 0.1 to 3 metres

Temperature Range: In use: 0°C to 45°C / In storage: -10°C to 60°C Temperature Coefficient: 0.5% / °C

Triple Sensor Unit 50cm x 40cm base x 50cm high / 7kg in air 5kg in water
Dimension and Weight
Display Unit 56cm wide x 46cm depth x 24cm high / 14.5kg

Description Sea Cable 5931 C1/50m – C1/100m Deck Cable 5931 C2/5m – C2/10m Bone Conducting Earphone 5931E/2m

Length 50 metres or 100 metres 5 metres or 10 metres 2 metres

Diameter 10.5 mm 10.5 mm 5 mm

Colour Yellow Yellow Black

Mechanical Strength Up to 100kg peak Up to 100kg peak Up to 10kg peak

Connectors Underwater mating moulded both ends Underwater mating moulded one end. IP63 type fitted at the other Moulded underwater mating

Display Unit 5930 – Special Features

Computer Interface RS232 – RS485 – USB

GPS Data Input Ship’s GPS data can be input and recorded with burial depth measurements

Data Recording Burial depth information can be stored to a file for later downloading

Test Oscillator An integral Test Oscillator allows the system to be tested before immersion

Display Daylight readable TFT colour touch screen

Diver Audio Mute Audio signal to diver can be muted from the Display Unit in an emergency

Ordering Information

5930 Dual input Surface Display Unit 5931C2/5 5 metre Deck Cable

5931 Triple Sensor Frame for Cable Detection and Burial Depth Measurement 5931C2/10 10 metre Deck Cable

5931C1/50 50 metre Underwater Umbilical Cable 5931E/2 Bone Conductor Earphone with 2 metre Lead

5931C1/100 100 metre Underwater Umbilical Cable 5932 Single Sensor for Cable Detection

Model 5930 MkII 11

 Supporting your
surveying, locating
and fault finding
requirements

Tinsley Instrumentation Ltd

1 Warner Drive
Springwood Industrial Estate
Braintree
Essex CM7 2YW

Telephone: 01376 335271

info@tinsley.co.uk
www.tinsley.co.uk