TM 11-6625-648-12
3-1. Operator's Controls, Switches, Indicators, and Connectors
Control, switch, indicator
Function
or connector
In NORMAL position, system continuity is maintained for direct-current and pcm
OPERATION switch . . . . . . . . . . . . . . . . . . .
pulses between attended points.
In LOOP BACK position, the direct-current and pcm pulses are returned
(looped back) to their originating attended points.
Position AB connects the meter switching circuit across the input and output of
DIRECTION switch . . . . . . . . . . . . . . . . . . . .
the AB repeater of the TD-206/G connected between RESTORER connectors 3 and
5.
Position BA connects the meter switching circuit across the input and output of
the BA repeater of the TD-206/G connected between RESTORER connectors 4 and
6
Selects mode of operation:
METER SELECT switch
Action
Switch positions
Battery (spring-loaded
portion) . . . . . . . . . . . . . . . . . . Meter indicates battery voltage (7 or greater)
BRIDGE . . . . . . . . . . . . . . . . . . Connects the meter switching circuit for making
ts with the bridge circuit.
Action
CABLE positions
DC AMPS . . . . . . . . . . . . . . . . . . Meter indicates CX-4245/G dc (yellow zone).
DC VOLTS . . . . . . . . . . . . . . . . . Meter indicates CX-4245/G dc voltage.
PROBE . . . . . . . . . . . . . . . . . . . . Pcm probe connected for pcm metering.
Action
RESTORER positions
VOLT DROP . . . . . . . . . . . . . . . Meter indicates dc drop across TD-206/G
(green zone).
PCM IN . . . . . . . . . . . . . . . . . . . Meter indicates TD-206/G PCM input
voltage is present.
PCMOUT . . . . . . . . . . . . . . . . . . Meter indicates TD-206/G PCM output
voltage is present.
U s e d to balance the bridge circuit; R E S (outer scale) indicates the distance
DISTANCE TO FAULT control . . . . . . . . . .
to a CX-4245/G short circuit; CAP (inner scale) indicates the distance to a
CX-4245/G open circuit.
Each scale is indexed from 0 to 6,000 ft.
In RES position, the bridge circuits are connected to measure CX-4245/G
CAP-RES switch . . . . . . . . . . . . . . . . . . . . . . .
In CAP position, the circuits are connected to measure CX-4245/G capacitance.
In ON position, the buzzer sounds when a 1,600-cps tone is transmitted to
BUZZER switch . . . . . . . . . . . . . . . . . . . . . . .
or received from an attended point.
In OFF position, the buzzer is disconnected.
Illuminates when 1,600-cps tone is transmitted to or received from an
CALL indicator lamp . . . . . . . . . . . . . . . . . . .
attended point.
In TALK position, transmitter and receiver of H-91A/U are connected to
ORDERWIRE switch . . . . . . . . . . . . . . . . . . .
order-wire circuit.
In OFF position, only the receiver portion of the H-91A/U is connected.
In SIG position, 1,600-cps tone is transmitted in both directions over the cable
link (spring-loaded in SIG position).
DC microammeter; connects to various test measurement circuits as determined
by position of METER SELECT switch.
Provided for connection of the pcm probe to the TS-1323/PTM-7.
PROBE connector . . . . . . . . . . . . . . . . . . . . . .
Provided for connection of the headset to the TS-1323/PTM-7.
HEADSET connector . . . . . . . . . . . . . . . . . . .
Provided for connection of repeaters AB and BA of the TD-206/G to the
RESTORER connectors (3, 5, 4, and 6). . . . . .
TS-1323/PTM-7.
Provided for connection of CX-4245/G to the TS-1323/PTM-7.
CABLE connectors (left and right)
and right) 1, 2, 7 and 8.
Provided for connection of CX-4245/G with standard coaxial-type connectors to
BRIDGE connectors (9 and 10). . . . . . . . . . . .
the TS-1323/PTM-7 bridge circuit.
EMERGENCY OW (emergency order
Provided for connection of CX-4245/G without standard coaxial-type connectors to
wire) binding posts (11, 12, and 13).
the TS-1323/PTM-7 order-wire circuit.
BRIDGE binding posts (14 and 15).
Provided for connection of CX-4245/G without standard coaxial-type connectors to
the TS-1323/PTM-7 bridge circuit.
Change 5 3-3