Line Cord Connection
The testsets are equipped with a standard 6-position modular jack for easy
connection of a variety of cordsets. This jack is located under the cover that
secures the belt clip. To change the cordset, remove the four screws holding
the cover and release the cordset plug. Insert the new cordset and replace the
cover and the screws.
CORDSETS
Standard Cord - No. 62-425
This cordset is approximately 5 feet in length. It consists of two conductors,
one red and one black. It is equipped with a modular plug at one end and
bent nose alligator clips at the other end. The modular plug is inserted into
the modular jack under the cover securing the belt clip. The bent nose
alligator clips are attached to telephone line terminals for testing functions
and monitoring the status of the line.
Standard Cord Without Bed of Nails - No. 62-427
Same as standard cord except clips do not have nails in them.
Ground Start Cord - No. 62-429
Use only with Model 4SP. This cordset is approximately 5 feet in length.
It consists of three conductors, one red, one black, and one green. It is
equipped with a modular plug at one end and bent nose alligator clips at
the other end. The modular plug is inserted into the modular jack under
the cover securing the belt clip. The bent nose alligator clips are attached
to telephone line terminals for testing functions and monitoring the status
of the line.
Mod to Mod Cordset - No. 62-431
This cordset is to be used for testing standard modular jack connections
and has a 6-position, 4-wire modular plug at each end. One modular plug
is inserted into the modular jack inside of the Model-4 testset, and the other
modular plug is inserted into the jack to be tested.
SPECIFICATIONS
ELECTRICAL
Talk -
Loop Limit: ................................................8000 ohms maximum at 48 VDC
Monitor -
Leakage: ..................................................................Higher than 500K Ohms
Impedance:..............................................................Greater than 120K Ohms
Return Loss -
@ 600 Ohms: Greater than 14dB from 300 to 3400 Hz.
ROTARY DIAL OUTPUT
Pulse Rate: ..........................................................................10 pps +/- 10 %
M/B Ratio: .......................................................................... 60/40% +/- 2%
Interdigit Interval:....................................................................800 ms typical
Leakage During Break:............................................Greater than 500K Ohms
DTMF OUTPUT
Tone Frequency Error: ....................................................+/- 1.5% maximum
Tone Level: High group: ...................................................... - 6dBm +/- 2dB
Low group:........................................................- 8 dBm +/- 2dB
High/Low Tone - twist:............................................................2 dB +/- 1 dB
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