COMTEC DIRECT SA9083 Line Tester Instruction Manual
- June 3, 2024
- COMTEC DIRECT
Table of Contents
DIRECT SA9083 Line Tester
Instruction Manual
Main Features:
- Large, easy to read dial
- Measuring ranges arranged for operator sequence testing
- Line Reversal B-A Switch
- Water and Shock Resistant ABS Plastic Case
- Meter/Battery Check
- Cost Effective Design
- Ease of Use
- Enables identification of telephone/line jack capacitor and estimation of line length
- Long Working Life
- One Year Warranty
Introduction
The Tester SA9083 is a battery powered, multi-range, analogue portable instrument. It is primarily intended for use by faultsmen for maintenance testing of telecommunication lines and equipment, subscriber installations connected to exchanges where faultsmen do not have access to a test desk, or where the testing equipment at the local exchange is not staffed during normal working hours. It has three input terminals, a range selector switch and a dual purpose push-button reversing switch (B-A changeover/test cell).
Package Contents
Tester SA9083
Lead set
Instruction sheet
Housed in equipment case
Meter/Battery Check
With a 6LR61 (PP3) battery fitted, turn the rotary selector switch to Ohms x 100. The red LED should illuminate.
Connect the red and black leads to the Tester.
Short the leads together, the meter needle should give a full scale
deflection.
If not fit a new battery and repeat.
Types of Test
- AC volts across the pair
- AC volts on either leg
- DC volts across the pair
- DC volts on either leg
- Battery contacts, either leg
- Earth contacts, either leg
- Short circuits rectified or not
- Disconnection, one or both legs
- Ballistic test (capacitor discharge)
- Insulation resistance (low) across the pair or to earth
AC Volts
Set the rotary selector switch to 250V AC.
Connect the black lead to a good earth and use the red lead to test each legof
the pair. Remove the black lead from earth and test across the pair.
STOP WORK IF AC VOLTS DETECTED
Any pair with AC volts, no matter how small must be reported.
DC Volts
Set the rotary selector switch to 250V DC.
Connect the black lead to a good earth and use the red lead to test each leg
of the pair.
Remove the black lead from earth and test across the pair.
Repeat for 50V DC and 5V DC.
This test indicates the presence of voltages which may damage the Tester.
Battery Contacts
Set the rotary selector switch to Batt B.
Connect leads across the pair and to earth, any movement of the meter needle
indicates a voltage is present on the ‘B’ leg.
Press the B-A change button, any movement of the meter needle indicates a
voltage present on the ‘A’ leg.
Earth Contacts
Set the rotary selector switch to Earth B.
Connect leads across the pair and to earth, any movement of the meter needle
indicates an earth is present on the ‘B’ leg.
Press the B-A change button, any movement of the meter needle indicates an
earth is present on the ‘A’ leg.
Insulation Resistance
Set the rotary selector switch to Ohms x 100.
Connect leads across the pair.
Take a reading from the top scale.
Any movement of the meter needle indicates low insulation resistance.
Sometimes a polarised (rectified) fault occurs where a reading can be obtained
in one direction only therefore it is important to press the B-A change
button to check the other direction.
Loops/Conductor Resistance
Set the rotary selector switch to Ohms Loop.
Connect leads across the pair, a loop or short circuit can be identified by a
deflection of the meter needle.
A loop or short circuit can also be identified by a full scale deflection when
using the Ohms x 100 range.
Disconnections
If a disconnection is suspected (i.e. not picking up expected line conditions)
to establish if the ‘A’ or ‘B’ leg is disconnected follow the procedure given
below:
Set the rotary selector switch to Ohms x 100.
Connect the red lead to the ‘A’ leg and the black lead to earth.
Press the B-A change button and note the amount of meter needle deflection.
Connect the red lead to the ‘B’ leg and press the B-A change button noting
the amount of meter needle deflection.
Compare the two deflections, if there is any noticeable difference then the
leg with the smallest amount of deflection may not be going as far as the
other leg.
Ballistic Test
This test is used when testing into a customers premises and can identify
either a 700 type capacitor, an Network Termination Equipment or an Line Jack
Unit.
Set the rotary selector switch to Ohms x 100.
Connect the red and black leads across the pair to be tested. Press the BA change button.
- If the meter needle deflects to about half full scale and returns quickly you are testing into a 700 type capacitor.
- If the meter needle deflects only slightly and returns slowly you are testing into an Network Termination Equipment or an Line Jack Unit.
Characteristics
Ranges
Range 1| 0-250V AC
Range 2| Battery test B (50V DC)
Range 3| Earth test B (3kΩ-3MΩ)
Range 4| Ohms x 100 (3kΩ-3MΩ)
Range 5| Ohms Loop (3kΩ-3MΩ)
Range 6| 0-250V DC
Range 7| 0-50V DC
Range 8| 0-5V DC
Range 9| 0-5A DC
Range 10| 0-500mA DC
Range 11| 0-50mA DC
Range 12| Mega Ohms (5kΩ-5MΩ)
Ingress Protection| IP54
Accuracy
Generally| to IEC51-7
DC ranges| ± 2.5%
AC ranges| ± 2.5%
Resistance ranges| ± 10%
Electromagnetic Compatibility (EMC)
Emissions| Bs6527 (En55022) class B
Susceptibility (EN50082-1) Two Class Index variation| IEC801 Parts 2,3 & 4
Battery| 6LR61 (PP3)
Dimensions
Height x Width x Depth| 150 x 98 x 70 mm
Weight| 365 g nett
Supplied by:
Comtec Cable Accessories Ltd
Cardinal Way Distribution Park,
Godmanchester, Huntingdon, PE29 2XJ
Tel. 01480 415000
www.comtecdirect.co.uk