Comtech EF Data CDM-700 - Manual (Page 235)

CDM-700 High Speed Satellite Modem Revision 5
OC-3 / STM-1 Interface (CDI-50) MN/CDM700.IOM
C.2 General Specifications
The interface operates to the specifications described in Table C-1.
Table C-1. Interface Specifications
Item Requirements
General:
Optical
Interface
Data Rate 155.52 Mbps
± 20 ppm
Framing and Signaling
SONET OC-3
SDH STM-1
Direction Full duplex, Allowing Tx/Rx only operation
Connectors Duplex SC
Fiber
Single Mode, 1300 nm, spectral width 7.7 nm rms (CDI-50-1)
Multi Mode, 1300 nm, 62.5 / 125 um, spectral width 58 nm rms (CDI-50-2)
Typical Distance Single Mode, up to 15 km. Multi Mode not stated
Output Power, Single Mode -12 dBm typical
Input Power, Single Mode -7 dBm maximum to -31 dBm
Output Power, Multi Mode -14 dBm typical
Input Power, Multi Mode -30 dBm maximum to -35 dBm
Standard G.957 / GR-253
Jitter G.825
Diagnostics
Baseband Loopback (at interface)
Interface Loopback (through interface module)
Hot Swap Capability No
Rx Buffer 0.5 to 26 mS in 0.1 mS steps
General:
Coaxial
Interface
Data Rate 155.52 Mbps
± 20 ppm
Framing and Signaling G.703 / GR-253, CMI
Jitter G.825
Direction Full duplex, Allowing Tx/Rx only operation
Connectors BNC-F, 75 Ohm
Output Level 1 Volt peak to peak typical
Input Level 1.1 Vpp maximum input. 0.5 Vpp minimum
Diagnostics
Baseband Loopback (at interface)
Interface Loopback (through interface module)
Jitter G.825
Hot Swap Capability No
Rx Buffer 0.5 to 26 mS in 0.1 mS steps
Physical
and
Environmental Environmental
Humidity 0 to 95% non-condensing
Temperature 0 to 50
°C (32 to 122°F)
Physical
3.95 W x 8.14 D x 1.5 H inches
(10.03 W x 20.67 D x 3.81H cm)
M&C
(Monitor
& Control)
Interface Select Fiber or Coaxial
Controlled Functions
Interface I/O Loopback, Digital Loopback
Loss of data. Mask as Fault or Alarm
Monitored Functions Loss of Tx Data : The modulator indicates a loss of data and transmits
C–3