TM 11-5895-846-14
Table 3-14. TTY Loop Monitor, Operator's Control and Indicators
Item
Fig.
No.
Control, indicator or connector
Function
reference
MONITOR, TELETYPE LOOP SM-D-936640 (TTY LOOP MON)
1
SPARE
Provides stowage space for spare METER FUSE.
2
METER FUSE Loop
Provides protection of LOOP current meter.
Current
3
Loop Meter
Provides indication of loop current.
4
SEND/OFF/RCV Switch
Controls function and sensitivity o f LOOP Current Meter
LOW LEVEL TTY VOLTAGE
5
Meter
Provides indication of low-level TTY voltage.
6
Function Selector Switch
Provides selective monitoring of various low level TTY voltages.
Table 3-15. COMM/VF Patch Panel, Operator's Controls and -Connectors
Item
Fig.
No.
Control, indicator or connector
Function
reference
PATCH PANEL, COMM/VF SM-A-935851 (COMM/VF PATCH PANEL)
1
MUX NO 1 Jack Group
Provides 24 patch jacks each for the MUX NO 1 E&M LINE,
EQ, and MON channels.
2
MUX A13 Jack Group
Provides 24 pairs (48 jacks) transmit/receive patch jacks each
for the LINE, EQ and MON channels.
3
MUX A29 Jack Group
Provide 24 pairs (48 jacks) of patch jacks each for the MUX
A29 LINE, EQ and MON transmit/receive channels.
4
MUX A29 Jack Group
Provides 24 patch jacks each for the MUX A29 E&M LINE, EQ
and MON channels.
5
4W SIG 20 HZ RD
Provides switching of MUX VF channels 13-24 (for 1544 kBS
13-24 Group
MBS only) for MUX A29 when placed in the up position
2/4 HYB Jack Group
and MUX A13 when placed in the down position.
LINE Row
6
REV Jacks
Provides one pair (2 jacks) of jacks for REV patching.
7
600 Jacks
Provides two jacks for 600-ohm patching.
8
FIA IN OUT Jacks
Provides one pair (2 jacks) of FIA input and output patching.
EQM Row
9
C-MESS IN OUT Jacks
Provides one pair (2 jacks) of C-Mess input and output jacks
for patching.
10
REV Jacks
Provides three pairs (6 jacks) of EQ M REV patch jacks.
11
LINE and EQ M Rows
Provides two 3-set jack groups on the LINE row for PAR
patching and one 4-set jack group on the EQM row for
PAR patching.
4W LEV 20 HZ RD Group
12
VF MISC Section
Provides four pairs (8 jacks) of MISC patch jacks each for the
INE, LINE USER, and MON transmit/receive channels.
13
LINE, LINE USER, and
Provides twelve pairs (24 jacks) of patch jacks each for LINE,
MON rows
LINE USER, and MON transmit/receive channels.
2/4 HYB Jack Group
14
ES DISABLE
Provides twelve jacks for ES DISABLE patching.
LINE EQ, and
Provides twelve pairs (24 jacks) of patch jacks each for LINE,
15
EQ M rows
EQ, and MON patching.
ECHO SUP LINE, EQ,
Provides twelve pairs (24 jacks) of patch jacks each for LINE,
16
and MON 4 W SIG Jacks
EQ, and MON 4 W SIG patching.
OW BRIDGE, TTY GRP,
Provides three pairs (6 Jacks) of patch jacks each for transmit/
receive patching of the OW
17
and VF/TTY TRUNK Jacks
BRIDGE, one pair (2 jacks) of patch jacks each for transmit/
receive patching of the TTY, and three pai rs (6 Jacks) of
patch jacks each for transmit/receive patching of the
VF/TTY TRUNK channels.
18
MUX A29 and MUX A13
Provides for switching channels 1 to 12 to MUX A29 and MUX
Switches
A13 as required for terminal configuration.
3-25