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Page Title:
Table 2-8. Mode A Switch Settings |
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 TM 11-5895-1179-13 EE132-EA-OMP-010/E106 KY883 TO 31S1-2GSC-161
a. Mode A (Normal Communications). When you are operating in a satellite communications link where no
threat of pulse jamming or antenna outage exists, set the controls on your encoder-decoder as shown in table 2-8. If your
encoder-decoder is located at the transmit end of the communications link, the ENCODER MODE select switch should be
set to the A position. If your encoder-decoder is located at the receive end of the communication link, the DECODER
MODE select switch should be set to the A position. If you are transmitting and receiving information, both the ENCODER
MODE select switch and the DECODER MODE SELECT switch should be set to the A position. For proper operation, the
encoder-decoder at the transmit end of the communications link must have the ENCODER MODE select switch set to the
A position and the encoder-decoder at the receive end of the communications link must have the DECODER MODE select
switch set to the A position.
Table 2-8. Mode A Switch Settings
Required
Switch
Setting
Indicator
Indication
FUNCTION select
ON LINE
ENCODER MODE
A
select
DECODER MODE
A
select
ON/OFF
ON
POWER
On
ON LINE FAULT
Off*
INDICATORS (all)
SYNC
On
3)
On
CHANNEL (x10
5)
Off
OUTPUT (x10
SEARCH
Off
ERROR RATE
Channel Error
COUNTER
Rate
*If any of these indicators is on, inform the next higher level of maintenance.
b.
Test Operation. The encoder-decoder can also be used for checking the quality of the communications link from
end to end (Link Test) and for checking the operation of the encoder-decoder (Self Test). The operating procedures for
these tests are described in paragraph 2-6.
2-19
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