Comtech EF Data RCS20 - Manual (Page 168)

RCS20 M:N Redundancy Switch Revision 15
Remote Operations MN-RCS20 and CD-RCS20
A–26
<1> Slot 0 Expansion
Type 255 decimal = no expansion card present, 0 = RCS20 Interface Control
Module, 1 = RCS20 Bank Control Module, 2 = RCS20 Ethernet Interface
Module, 3 = RCS20 Reference Distribution Module
<1> Slot 1 Expansion
Type 255 decimal = no expansion card present, 0 = RCS20 Interface Control
Module, 1 = RCS20 Bank Control Module, 2 = RCS20 Ethernet Interface
Module, 3 = RCS20 Reference Distribution Module
<1> Slot 2 Expansion
Type 255 decimal = no expansion card present, 0 = RCS20 Interface Control
Module, 1 = RCS20 Bank Control Module, 2 = RCS20 Ethernet Interface
Module, 3 = RCS20 Reference Distribution Module
<1> Slot 3 Expansion
Type 255 decimal = no expansion card present, 0 = RCS20 Interface Control
Module, 1 = RCS20 Bank Control Module, 2 = RCS20 Ethernet Interface
Module, 3 = RCS20 Reference Distribution Module
<1> Slot 4 Expansion
Type 255 decimal = no expansion card present, 0 = RCS20 Interface Control
Module, 1 = RCS20 Bank Control Module, 2 = RCS20 Ethernet Interface
Module, 3 = RCS20 Reference Distribution Module
<1> Slot 5 Expansion
Type 255 decimal = no expansion card present, 0 = RCS20 Interface Control
Module, 1 = RCS20 Bank Control Module, 2 = RCS20 Ethernet Interface
Module, 3 = RCS20 Reference Distribution Module
A.3.6 Opcode <2010h> Query RCS20 Reference Distribution Module
Configuration
Command Data Field (1 byte)
<1> RDM Slot Number Slot number on the RCU20 for the RDM to be queried
Query Response Data Field (4 bytes)
<1> RDM Status Bit 0 = Ext A Activity
Bit 1 = Ext B Activity
Bit 2 = Internal Ref. Activity
<1> RDM Fallback
Selection 0 = External A Only, 1 = Internal Only, 2 = Ext A  Int., 3 = Int.  Ext
A, 4 = Ext A  Ext B, 5 = Ext A  Ext B  Int., 6 = Int.  Ext A 
Ext B
<1> RDM Internal
Reference Frequency 0 = 10 MHz, 1 = 5 MHz, 2 = 2.5 MHz, 3 = 1.25 MHz
<1> RDM Currently
Selected Source 0 = External A, 1 = External B, 2 = Internal