Asi/Rs422 Interface Commands; Ecl_Hssi Interface Commands - Comtech EF Data SDM-2020 Installation And Operation Manual

Satellite demodulator
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Remote Control Operation
B.9.2

ASI/RS422 Interface Commands

Interface
Command:
Select
Response:
Command
Status:
Response:
DM State
Command:
Control
Response:
Status:
Response:
MC State
Command:
Control
Response:
Status:
Response:
RR State
Command:
Control
Response:
Status:
Response:
Where 'pn' is the last parameter returned.
Parameter
Number
23
24
25
26
27
28 to 32
B.9.3
ECL/HSSI_ RX Interface Commands
ECL DTE
Status:
Status
Response:
Where 'pn' is the last parameter returned.
Parameter
Number
23 to 32
B–22
<add/ISEL_xxxxx'cr'
>add/ISEL_xxxxx'cr''lf']
<add/ISEL_'cr'
>add/ISEL_'cr''lf']
<add/DM_xxx'cr'
>add/DM_xxx'cr''lf']
<add/DM_'cr'
>add/DM_xxx'cr''lf']
<add/MC_xxx'cr'
>add/MC_xxx'cr''lf']
<add/MC_'cr'
>add/MC_xxx'cr''lf']
<add/RR_xxx'cr'
>add/RR_xxx'cr''lf']
<add/RR_'cr'
>add/RR_xxx'cr''lf']
Parameter Name
(Command Reference
Interface Select
(ref. 'ISEL_"command).
Reserved
Note: Parameters 25 to 28 are
assigned to the RS422 interface.
DM State Control
(ref. 'DM_"command)
MC State Control
(ref. 'MC_"command)
RR State Control
(ref. 'RR_'command)
Reserved
<add/EDTE_'cr'
>add/EDTE_xxx'cr''lf']
Parameter Name
(Command Reference
Reserved
SDM-2020 Satellite Demodulator
Where: xxxxx = ASI or RS422.
This command selects which interface connector will be used
for data.
Where: xxx = NRM (normal sense) or INV (inverted sense).
This command controls the logic sense of the DM (DCE-ready)
signal.
Where: xxx = NRM (normal sense) or INV (inverted sense).
This command controls the logic sense of the MC (Master
Clock) signal.
Where: xxx = NRM (normal sense) or INV (inverted sense).
This command controls the logic sense of the RR (receiver
ready) signal.
Description
p23 = n, where n = '0' (ASI), '1' (RS422)
p25 = n, where n = '0' (Normal), '1' (Invert)
p26 = n, where n = '0' (Normal), '1' (Invert)
p27 = n, where n ='0' (Normal), '1' (Invert)
Where: xxx = UNA (unavailable) or AVA (available).
This command polls the ECL interface for the status of the
DTE equipment.
Description
Rev. 3

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