TM 11-5895-846-14
(6) TTY/low level patch panel.
**Failure of On-Line Unit, Patch D/C 1 traffic to
(7) TTY/FSK patch panel.
D/C
2, 3 or 4 depending upon traffic load.
d. Tracking Patch Panel (fig. 2-18). Mission
control will determine whether BEACON or COMM track
multichannel operation the IF patch panel is patched as
will be used. If COMM track is used, down converter
follows:
(1) XMT IF Patch.
D/C 1 will be on-line with D/C 5 available for standby. If
(a) MODEM 1 to UP CONV 1 or
BEACON track is used, D/C 5 will be on- line with D/C 1
available for standby. However in this latter mode with a
MODEM 1 to FILTER IN and FILTER OUT to UP CONV
D/C 5 failure, any traffic on D/C 1 would have to be
1 if filter is used.
directed to D/C 2, 3 or 4 depending upon total terminal
(b) EXT IF 2 to UP CONV 2.
traffic requirements. Patch cable connections for these
(c) EXT IF 3 to UP CONV 3.
two tracking modes are as follows:
(d) EXT IF 4 to UP CONV 4.
(2) RECEIVE IF PATCH.
Tracking Down Converter
(a) MODEM 1 to DOWN CONV 1 or
On-Line StandbyPatch Cable Connection
Mode
DOWN CONV 1 to FILTER 2 IN and FILTER 2 OUT to
COMM D/C 1
D/C 5 D/C 1 TRACK OUT to
MODEM 1 if filter is used.
ANT. TRACK, COMM
(b) EXT IF 2 to DOWN CONV 2.
COMM* D/C 5
D/C 1 D/C TRACK OUT to
(c) EXT IF 3 to DOWN CONV 3.
Failure ANT. TRACK, COMM
(d) EXT IF 4 to DOWN CONV 4.
BEACON D/C 5
D/C 1 D/C TRACK OUT to
ANT. TRACK
Mission control may require other signal routing between
BEACON
internal modem, external IF users and the up and down
BEACON** D/C 1 D/C5 D/C 1 TRACK OUT to
Coaxial patch cables are supplied for
Failure ANT. TRACK,
meeting these needs and for cross-patching in the event
BEACON
of equipment failures.
*Failure of On-Line Unit
2-40