Comtech EF Data MM200 - Manual (Page 134)

Appendix A MM200 High-Speed Microwave Modem
A-34 TM086 – Rev. 4.1
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Interface Sub
Type
Interface Clock
Source
Interface Clock
Frequency
Interface
Framing
Interface Volume
Interface Clock
Polarity
Interface Data
Polarity
Reserved
Interface
Terrestrial Loopback
Interface PRBS
Interface Major
Alarm1 Mask
Interface Minor
Alarm1 Mask
20 = DS0 APC
Reserved, selects the Rx interface sub-type
0 = Rx Clk
1 = Ext BNC
2 = Ext Bal
3 = Internal Clk
0 = 2.048 MHz
1 = 5.0 MHz
2 = 10.0 MHz
3 = Data Rate
0 = unframed
1 = MPEG 188
2 = MPEG 204
3 = Null 188
4 = Null 204
0 – 255
0 = normal, 1 = inverted, 2 = no auto
0 = normal, 1 = inverted
Spare
0 = disable, 1 = enable
0 = normal
1 = prbs_23
2 = prbs_23m
3 = prbs_15
4 = prbs_15m
(Not Yet Implemented)
0 = Mask, 1 = Allow
Bit 0 = Interface Test
Bit 1 - 7 = Spare
0 = Mask, 1 = Allow
Bit 0 = Interface FIFO full
Bit 1 = Interface FIFO empty
Bit 2 = PLL lock
Bit 3 = Interface data activity detect
Bit 4 = Interface clock activity detect
Bits 5 - 7 = Spare
Status Bytes
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Interface Major
Alarm1Status
Interface Minor
Alarm1 Status 0 = Pass, 1 = Fail
Bit 0 = Interface Test
Bit 1 - 7 = Spare
0 = Pass, 1 = Fail
Bit 0 = Interface FIFO full