TM 11-5820-803-12
Table 2-8. Operation of LOS/Cable Receiver and Decoder Selection Switches.
Switch
Positioning
Function
A2AA22A1S1
1
Selects input filter for use at input data rates from 19.200 kb/s to 225.00
kb/s if LOS microwave input is used; selects no first stage of equaliza-
tion if any cable input is used.
2
Selects input filter for use at input data rates from 225.01 kb/s to 1.8000
Mb/s if LOS microwave input is used.
3
Selects input filter for use at input data rates from 1.8001 Mb/s to 5.000
Mb/s if LOS microwave input is used; selects use of first stage of
equalization if any cable input is used.
A2A2A2A1S2
1
Selects operation with cable inputs.
2
Selects operation with LOS microwave input.
A2A2A2A1S3
1
Selects use of second stage of equalization at decoder input.
2
Selects use of no equalization or filtering at decoder input.
3
Selects use of low pass filter at decoder input.
A2A2A2A1S4
1
Selects 50-ohm unbalanced cable input.
2
Selects 75-ohm unbalanced cable input.
3
Selects 75-ohm balanced cable input.
Figure 2-28. Equalization waveforms
2-28
