TM 114625-1696-12
3-28. RESTORER PULSE FORM Section Controls, and Connectors
Control, indicator, fuse, or connector
Function
Switch S15 (6-position rotary switch) ...........................
Connects power to AUT and metering voltage from AUT to meter M1
through S5 position S15.
Sw pos
Function
PCM & TMG....................
Connects pcm signal to AUT through
PCM
LEVEL control. ................
Terminates pcm output of
.......................................
AUT and connects pcm metering
.......................................
voltage from AUT to meter M 1.
NOISE Connects noise signal to
AUT through PCM LEVEL control
Terminates pcm output of AUT and
connects to J40. Connects pcm
metering voltage from AUT to meter
M1. Connects order wire output of
AUT to J45 through filter with handset
response.
OUTPUT ..........................
Connects 1 kHz sine wave and noise
........................................
signal to
AUT through PCM LEVEL control
Terminates pcm output of AUT and
connects to J40. Connects order
wire metering voltage from AUT to
meter M1. Connects order wire
output of AUT to J45 through filter
with handset response.
RESPONSE ....................
Connects J39 to AUT and order wire
output of
AUT to J45.
DISTORTION ..................
Connects J39 to AUT and order wire
output of AUT to J45 through 1 kHz
notch filter.
OFF ................................
Disconnects power and M 1 from AUT.
FREQ ADJ control .......................................................
Adjust frequency of pcm oscillator. Checks sync of timing pulses by
varying frequency.
Switch S16 (spring-loaded) ..........................................
In TEST position, operates order wire relay in AUT. Mutes pcm
output by removing 91-ohm termination.
PCM LEVEL control .....................................................
Adjusts pcm input level to AUT.
Connector J38 PCM LEVEL .........................................
Connection to pcm input of AUT.
Connector J39 AF IN....................................................
Connection to order wire input of AUT. Connection to order wire
input of pcm generator through S15 DISTORTION position.
Connector J40 PCM OUT ............................................
Connection from pcm output of AUT.
Connector J41 XMTR ..................................................
Transmitter modulating signal output amplitude adjusted by PCM
LEVEL.
Connector J42 .............................................................
Connects receiver test facility to AUT.
Connector J44 SYN OUT .............................................
676 kHz square wave output.
Connector J45 OW OUT ..............................................
Connection from order wire output of AUT through S15.
Connector J46 TIMING OUT ........................................
Connection from timing output of AUT.
Connector J47 MODEM ...............................................
Modem modulating signal output amplitude adjusted by PCM LEVEL.
3-29. ELECTRONIC SWITCH Section Controls, Indicators, and Connectors
Control, indicator, fuse, or connector
Function
Switch S17 .................................................................
Connects power to AUT. Connects ripple voltages to J49. Connects
meter M1, through S19 and S6. position S20, to metering voltages
from internal power supply or power supply under test.
Sw pos
Meter indication
+12V ...............................
+12 volt dc supply voltage through S9.
-12 V ...............................
- 12 volt dc supply voltage through S19.
100 V ..............................
100 volt dc supply voltage through S19.
.......................................
200 volt dc supply voltage through S19.
6 V ..................................
Voltage of receive bias supply through
S19.
ALARM TEST..................
Voltage of load bias supply through S19.
Switch 18.....................................................................
In ALARM TEST position, provides an alarm drive signal to internal
power supply and AUT.
Connector J49 RIPPLE ................................................
Connection to power supply ripple voltages through S19 and S17.
Switch S19 ..................................................................
Set to INT, connects internal power supply to J50. Set to EXT,
connects power supply under test at J61 to internal loads.
Connectors J50 and J51 ..............................................
Connect receiver test facility to AUT.
3-14
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