Comtech EF Data SPOD PS 1, PS 1.5, and PS 2 C-, X-, or Ku-Band - Manual (Page 129)

SPOD C-, X-, or Ku-Band Outdoor Amplifier MN-SPODPSX
Appendix A Revision 1
A–3
A.3.2 Serial-based Monitor and Control
The EIA-232 Interface is not available for 1:1 Redundancy.
See Chapter 5. SERIAL-BASED REMOTE PRODUCT MANAGEMENT for detailed
information about the remote commands and queries specified in this section.
Serial-based Remote Product Management/Monitor and Control (M&C) of any SPOD Standalone
or 1:1 Redundancy application is available through use of the optional CLC-10 Handheld
Terminal M&C Accessory Kit (CEFD Kit KT-0020518). This kit provides the user with on-site
access to the SPOD’s serial remote control interface. For detailed information about this
optional accessory, see the CLC-10 Comtech LPOD Controller User’s Guide (CEFD P/N
MN-CLC10).
Figure A-2. Serial-based M&C using CEFD Kit KT-0020518
Serial command ESW determines system operation. If ESW=1 is executed in both units, the
system will be in Automatic Redundancy mode. In this mode, if a fault is detected with the
active (online) unit – either by loss of communications between the backup (offline) and active
units, or via the summary fault – the backup unit will trigger the waveguide switch and,
assuming the backup unit is not faulted, will become the active unit. The backup unit will also
poll the active unit at regular intervals in an attempt to maintain configuration compatibility
with the active unit; this ensures that, should a fault occur, the backup unit is configured exactly
the same as the active unit.