Comtech EF Data SDR-54A User Manual
Page 62
SDR-54A Satellite Demodulator
Revision 4
Specifications
MN/SDR54A.IOM
Table 8-1. Specifications (Continued)
Parameter
Specification
Bit Error Rate:
Viterbi 1/2 rate:
Typical
Guaranteed
Viterbi 1/2 Rate with Reed-
Solomon
1 x 10
-8
for E
b
/N
0
6.7 dB
1 x 10
-8
for E
b
/N
0
7.2 dB
1 x 10
-10
for E
b
/N
0
5.0 dB
Ambiguity Resolution Method
Differential decoder
Descrambling
CCITT V.35 INTELSAT modified.
Modified V.35 Self-Synchronizing (Closed Network RS option).
None.
Deinterleaver (RS Codec)
Depth 8
Depth 16
Note: Hardware designed to attempt to support variable depth.
Differential Decoder
Selectable On or Off
Composite Input Power, maximum
Composite Input Power is –8.
Data Interface:
Connector Type
Synchronous RS-232 and RS-422 (selectable)
25-pin sub-D (female) rack mount, desktop
Clock Jitter
2.0 dB maximum jitter gain, 4% RMS of 1/symbol rate absolute.
Status LEDs
Power, carrier lock, fault, and LNB power
Certification The
demodulator shall be both CE mark and FCC certified. CE
mark testing will be done for Conducted and Radiated Emissions
per EN55022. Radiated immunity will be tested per EN50082-1.
Low voltage directive safety will be tested per EN60950. The unit
will be tested per FCC Part 15 Class B.
Note: Warm up periods are required for the folowing operating temperature:
0 to 60°C
15 minutes, approximately
0°C
45 minutes, approximately
Table 8-2. Environmental and Physical Specifications
Parameter
Specification
Environmental:
Operating Temperature:
Desktop
Rack Mount
Temperature (Storage)
Humidity (non-condensing)
0
° to +50°C (+32° to +122°F)
-20
° to +60°C (-4° to +140°F)
-40
° to +70°C (-40° to +158°F)
0 to 95% at 40
°C (40°F)
Frequency Stability:
Standard
High-Stability
±15 ppm
± 0.5 ppm
Dimensions:
Desktop
Rack Mount (1RU)
17.36W x 2.04H x 8.35D in. (44.1W x 5.2H x 21.2D cm)
19W x 1.75H x 8.35D in. (48.3W x 4.4H x 21.2D cm)
Unit-to-Unit Delay Variation
< 2.3% of 1 (data rate) for R 1/2 only, without Reed-Solomon
concatenated decoder.
< 1µs for symbol rates 19.2 to 800 ks/s
< 1µs for symbol rates < 19.2 ks/s
8–2