Operating instructions

Appendix A RCS20 M:N Redundancy Switch
A-12 TM056 – Rev. 2.3
Opcode: <2206h> Force RCS20 Manual Backup
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<1>
<1>
<1>
Maximum
Number of
Backup
Channels
Backup 1
(Channel 0)
Channel to
Backup
Backup 2
(Channel 9)
Backup Mode
2 for RCS20
1 to 8 (if Channel 9 configured as backup)
1 to 9 (if Channel 9 not configured as backup)
1 to 8
Notes:
1. Command will return an error if Backup 1 and
Backup 2 are forced to backup the same channel.
2. Set channel = 255 decimal if no forced backup is
desired for either backup channel.
3. Command will return an error if trying to force a
backup for a backup channel not configured in manual
backup mode.
Opcode: <2010h> Query RCS20 Reference Distribution Module Configuration
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<1>
<1>
<1>
<1>
RDM Slot
Number
RDM Status
RDM Fallback
Selection
RDM Internal
Reference
Frequency
RDM Currently
Selected Source
Slot number on the RCU20 for the RDM to be configured
Bit 0 = Ext A Activity
Bit 1 = Ext B Activity
Bit 2 = Internal Ref. Activity
0 = External A Only
1 = Internal Only
2 = Ext A à Int
3 = Int à Ext A
4 = Ext A à Ext B
5 = Ext A à Ext B à Int
6 = Int à Ext A à Ext B
0 = 10 MHz
1 = 5 MHz
2 = 2.5 MHz
3 = 1.25 MHz
0 = External A
1 = External B
2 = Internal