Operating instructions

RCS20 M:N Redundancy Switch Appendix A
TM056 – Rev. 2.3 A-3
<1>
<1>
<1>
<1>
<1>
<1>
Latched Switch
Minor Alarms 1
Latched Switch
Minor Alarms 2
Backup 1 Mod
Hot Standby
Channel
Backup 1 Demod
Hot Standby
Channel
Backup 2 Mod
Hot Standby
Channel
Backup 2 Demod
Hot Standby
Channel
Bit 2 = Error During Backup
(0 = no alarm, 1 = alarm)
Bit 0 = Power Supply #1 Present
Bit 1 = Power Supply #2 Present
Bit 2 = Power Supply #1 Voltage
Bit 3 = Power Supply #2 Voltage
Bit 4 = Communications Error
Bit 5 = Faulted Prime Modem
Bit 6 = Faulted Backup Modem
Bit 7 = Modem Configuration Change
(0 = no alarm, 1 = alarm)
Bit 0 = CDM Error
Bits 1 - 7: Reserved for future expansion
(0 = no alarm, 1 = alarm)
0 = No hot standby for backup 1 mod
Channel number (1 to 9)
0 = No hot standby for backup 1 Demod
Channel number (1 to 8)
0 = No hot standby for backup 2 mod, or channel 9 not
configured as backup
Channel number (1 to 8)
0 = No hot standby for backup 1 Demod, or Channel 9 not
configured as backup
Opcode: <2002h> Query RCS20 Switch Configuration
Query Response
<2>
<1>
<1>
<1>
Nonvolatile Bytes
Number of
Channels
Nonvolatile Bytes
per Channel
*Channel 0
Configuration
*Channel 0 Mod
Number of nonvolatile RCS20 configuration memory bytes (125
decimal for RCS20)
Maximum number of prime and backup channels available to
the RCS20 switch. 10 decimal for RCS20.
Number of nonvolatile memory bytes per channel. 10 decimal
for RCS20.
Bit 0 = modulator present
Bit 1 = demodulator present
(0 = not present, 1 = present)