SDM-2020 Satellite Demodulator
Remote Control Operation
Rev. 3
B–23
B.9.4
G.703 Interface Commands
External
Clock
Reference
Frequency
Command:
Response:
Status:
Response:
<add/ERF_nnnnn.n’cr’
>add/ERF_nnnnn.n’cr’’If]
<add/ERF_'cr'
>add/ERF_nnnnn.n'cr''lf']
Where:
nnnnn.n = 1544.0 to 20000.0 kHz (external clock frequency in
8.0 kHz steps) or at RX Data Rate
Buffer Clock
Command:
Response:
Status:
Response:
<add/BC_xxx’cr’
>add/BC_xxx’cr’’If’]
<add/BC_’cr’
>add/BC_xxx’cr’’If]
Where: xxx = INT (Internal SCT Clock), EXT (External TX
Terrestrial Clock), SAT (RX Satellite Clock), REF (External
Clock-Reference Frequency).
Interface
Loopback
Command:
Response:
Status:
Response:
<add/ILB_xxx’cr’
>add/ILB_xxx’cr’’If’]
<add/ILB_’cr’
>add/ILB_’cr’’If’]
Where: xxx = On or Off.
Interface
Buffer Size
Command:
Response:
Status:
Response:
<add/IBS_nn’cr’
>add/IBS_nn’cr’’If’]
<add/IBS_’cr’
>add/IBS_nn’cr’’If’]
Where: nn = 0 to 32 milliseconds (Buffer size in 2 ms steps)
Interface
Buffer
Center
Command:
Response:
<add/IBC_’cr’
>add/IBC_’cr’’If’]
Where: nn = 0 to 32 milliseconds (Buffer size in 2 ms steps)
Interface
Coding
Format
Receive
Command:
Response:
Status:
Response:
<add/ICFR_xxxx’cr’
>add/ICFRR_xxxx’cr’’If’]
<add/ICFR_’cr’
>add/ICFR_xxxx’cr’’If’]
Where: xxxx = AMI, HDB#, B8ZS, or B3ZS.
Interface
Receive
Framing
Structure
Command:
Response:
Status:
Response:
<add/IRFS_fffff_ssss’cr’
>add/IRFS_fffff_ssss’cr’’If’]
<add/IRFS_fffff’cr’
>add/IRFS_fffff_ssss’cr’’If’]
Where:
fffff = 1544, 2048, 6312, 8448, 32064, 34368, 44736, or
51840 (frame type).
ssss = None, G704, G742, G743, G745, G747, G751, or
G753 (framing type).
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’
>add/TRF_nnnnn’cr’’If’]
<add/TRF_’cr’
>add/TRF_nnnnn’cr’’If]
Where: nnnnn = 1544, 2048, 6312, 8448, 32064, 34368,
44736,
or 51840 in kbit/s.
Summary of Contents for SDM-2020
Page 32: ...SDM 2020 Satellite Demodulator Introduction Rev 3 1 17 This page is intentionally left blank...
Page 35: ...SDM 2020 Satellite Demodulator Installation Rev 3 2 3 Figure 2 1 Typical Rack Installation...
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Page 65: ...SDM 2020 Satellite Demodulator Operation Rev 3 3 21 This page is intentionally left blank...
Page 72: ...Operation SDM 2020 Satellite Demodulator 3 28 Rev 3 This page is intentionally left blank...
Page 75: ...SDM 2020 Satellite Demodulator Operation Rev 3 3 31 This page is intentionally left blank...
Page 92: ...Operation SDM 2020 Satellite Demodulator 3 48 Rev 3 This page is intentionally left blank...
Page 209: ...Fast Option SDM 2020 Satellite Demodulator C 6 Rev 3 This page is intentionally left blank...
Page 212: ...SDM 2020 Satellite Demodulator Glossary Rev 2 g 3 W Watt...
Page 213: ...Glossary SDM 2020 Satellite Demodulator g 4 Rev 3 This page is intentionally left blank...