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CDM-700 High Speed Satellite Modem
Dual E3/T3/STS-1 Interface (CDI-10)
B.2
Summary of Specifications
Item
Interfaces
External Clock Input
Interfaces Operating
Simultaneously
Interface Selection
Rx Buffer:
General
Minimum Buffer Size for any rate
Maximum Buffer Size
Clock Options
Acquisition Range
Test
Hot Swap Capability
G.703 Unbalanced:
Interfaces
External
Clock
Input
Alarms
Environmental
Physical and
Environmental
Dimensions
G.703 Frame Types
Connector Type
Signals Supported
Data Rate
Tx and Rx Data Rates
Line Coding
Pulse Mask
Jitter
Impedance
Connector
Impedance
Input Amplitude
Input Frequency
Signal Characteristics
Humidity
Temperature
Requirements
2 each Independent G.703 ports, E3, T3, and STS-1
Note: Selection of a port requires TX and RX having the same
data rate.
1 input
None, one or both of the interfaces
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
61 ms
G.752
44 ms
G.753
61 ms
STS-1
40 ms
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)
2047 test pattern generator
None
2 independent channels supporting G.703 E3, T3, and STS-1.
BNC, female
ITU-T-G.703 SD, RD
34.368, 44.736 and 51.84 Mbps
Tx and Rx data rates are programmed the same
HDB3 (for E3), B3ZS (for DS3 STS-1), AMI (Common)
ITU-T-G.703
Bellcore GR-499 core For T3 and STS-1, G.823 for E3
75 Ω Per ITU-T-G.703
BNC, female
75 Ω ± 5%
0.5 to 5.0 V peak to peak
1, 2, 5, 10, 2.048, 34.368, 44.736, and 51.84
Sine wave or square with duty cycle of 50 ± 10%
Loss of Signal
All 1's
0 to 50 °C (32 to 122°F)
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)
B–3
Revision 5
MN/CDM700.IOM
Bits
Bytes
1536
192
4760
595
2148
268.5
6480
810
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