TIF TT-200 BUTT SET - Manual (Page 7)

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ELECTRICAL
Loop Resistance less than 300
Ω
(talk mode)
Monitor Impedance greater than 100k
Ω
ROTARY DIAL OUTPUT
Pulsing Rate
100pps +/-0.8%
Make Rate 33 +/-3%
Minimum Pulse 600ms over
DTMF OUTPUT
Frequency Deviation
+/-1.8%
Level Deviation High -8dBm, Low -6dBm +/-0.8%
Return Loss 2dBm
Redial 32 digits
Insulation Resistance 0.1- 10M
Ω
(DC 180V)
Power Source DC 9V
INSULATION RESISTANCE & CAPACITY MEASUREMENT
1. Connect the alligator clips to L1 and L2 of subscriber side.
2. Push the METER CALL (10) button.
3. The insulation resistance will be displayed on the 'Mega Ohm meter,
when the METER CALL button is pressed.
Generally, there are two conditions:
Normal condition (good insulation between L1 and L2)
The meter scale goes to 0.2
Ω
generally and then back. This is caused
by the capacity of the connected subscriber's telephone or the line and
terminal.
Abnormal condition (bad insulation between L1 and L2)
The meter scale goes up to a low value (below 1M
Ω
) and stays there.
This indicates a faulty circuit on L1 and L2.
Note - The meter will not move if the line is an open circuit.
BATTERY CHECK
Indicates if 9-volt battery requires replacement.
1. Connect the two alligator leads together.
2. Press the METER CALL (10) button. A good battery is indicated if the
needle is in the BT section of the meter. If the needle is below, the bat-
tery should be replaced.
OPERATION INSTRUCTIONS (CON’T)
TT-200 (BS-100) 2/12/01 4:00 PM Page 7