Comtech EF Data SDM-2020 - Manual (Page 230)

SDM-2020 Satellite Demodulator Revision 4
Remote Control Commands MN/SDM2020D.IOM
A–30
Interface
Receive
Framing
Structure Command:
Response:
Status:
Response: >add/IRFS_fffff_ssss’cr’’If’]
>add/IRFS_fffff_ssss’cr’’If’] Where:
fffff = 1544, 2048, 6312, 8448, 32064, 34368, 44736, or
51840.
ssss = None, G704, G742, G743, G745, G747, G751, or
G753.
Notes:
1. Valid 1544 frame structures are None and G.704.
2. Valid 2048 frame structures are None and G.704.
3. Valid 6312 frame structures are None, G.704, G.743,
and G.747.
4. Valid 8448 frame structures are None, G.704, G.742,
and G.745.
5. Valid 32064 frame structures are None and G.752.
6. Valid 34368 frame structures are None, G.751, and
G.753.
7. Valid 44736 frame structures are None and G.752.
8. Valid 51840 frame structures are None and STS-1.
TX
Terrestrial
Clock
Reference
Frequency Command:
Response:
Status:
Response: >add/TRF_nnnnn’cr’’If’]
>add/TRF_nnnnn’cr’’If] Where: nnnnn = 6312, 8448, 32064, 34368, 44736, or 51840 in
kbps.
Interface
Buffer Fill
Status Command:
Response:
>add/IBFS_nn%’cr’’If’]
Where: nn = 1 to 99 (Relative to buffer depth.)
Where ‘pn’ is the last parameter returned.
Parameter
Number
Parameter Name
(Command Reference Description
23
24
25
26
27
28
29 to 32
RX Interface Coding Format
(ref. ICFR_ command)
Interface Loopback
(ref. ILB_ command)
Buffer Clock Source
(ref. BC_ command)
Interface Buffer Size
(ref. IBS_ command)
External Reference Frequency
(ref. ERF_ command)
TX Terrestrial Clock Frequency
(ref. TRF_ command)
Reserved
p23 = n, where n = 0 (AMI), 1 (B3ZS), 2 (HDB3), 3 (B8ZS).
p24 = n, where x = 0 (Off) or 1 (On).
p25 = n, where x = 0 (Off) or 1 (On).
p26 = nnnnnn, buffer size in milliseconds
p27 = nnnnn.n external frequency in kHz
p28 = nnnnn, external reference frequency in Mbps