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CDM-710G High-Speed Satellite Modem
Single G.703 (E3/T3/STS-1) Interface (CDI-10-1)
12.4
Summary of Specifications
Item
Interfaces
External Clock Input
Interface Selection
Rx Buffer: G.703 Frame Types
Minimum Buffer Size for any rate
General
Maximum Buffer Size
Clock Options
Acquisition Range
Test
Hot Swap Capability
G.703 Unbalanced:
Interfaces
External
Clock
Input
Alarms
Environmental
Physical and
Environmental
Dimensions
Requirements
1 each Independent G.703 ports, E3, T3, and STS-1
1 input
Each of the interfaces is individually enabled
Type
G.751
G.752
G.753
STS-1
Note: Programmable in 0.5 ms increments.
0.5 ms
G.751
G.752
G.753
STS-1
Tx Clock = Tx, Rx (satellite) or External
Rx Clock = Tx, Rx, External or Internal
Note: Asymmetric operation is not supported
Programmed Tx data rate ± 100 ppm
Baseband Loopback (at interface)
Interface Loopback (through interface module)
None
1 independent channel supporting G.703 E3, T3, and STS-1.
BNC, female
Connector Type
ITU-T-G.703 SD, RD
Signals Supported
34.368, 44.736 and 51.84 Mbps
Data Rate
Tx and Rx data rates are programmed the same
Tx and Rx Data Rates
Line Coding
HDB3 (for E3), B3ZS (for DS3 STS-1), AMI (Common)
ITU-T-G.703
Pulse Mask
Bellcore GR-499 core For T3 and STS-1, G.823 for E3
Jitter
Impedance
75 Ω Per ITU-T-G.703
BNC, female
Connector
75 Ω ± 5%
Impedance
Input Amplitude
0.5 to 5.0 V peak to peak
Input Frequency
1, 2, 5, 10, 2.048, 34.368, 44.736, and 51.84
Signal Characteristics
Sine wave or square with duty cycle of 50 ± 10%
Loss of Signal
All 1's
0 to 50 °C (32 to 122°F)
Humidity
Temperature
0 to 95% non-condensing
3.95 W x 8.14 D x 1.5 H inches
(10.03 W x 20.67 D x 3.81H cm)
12–4
Bits
1536
4760
2148
6480
61 ms
44 ms
61 ms
40 ms
Revision 1
MN-CDM710G
Bytes
192
595
268.5
810
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