Comtech EF Data DMD1050TS - Compact Flash (J6); Power Input (J16); BUC & LNB Power Input (J3); Modem Connections (Standard)

DMD1050TS Satellite Modem Board
Revision 1
Rear Panel Interface 4–5 MN-DMD1050TS
4.2 Compact Flash (J6)
A minimum 256 Mbit flash memory card stores all the modem M&C and operational data. It must
be installed when the modem is operating.
4.3 Power Input (J16)
The Input DC Power for the modem board requires:
• +21 to +24 Volts DC
• 4 Pin Crimp Terminal Housing
• Mfg (Molex) P/N: 26-60-5040
Table 4-1. DC Input Power Ports (J16)
Pin No.
Signal Name
Signal
1
Ground
GND
2
Ground
GND
3
24 Volts DC
---
4
24 Volts DC
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4.4 BUC & LNB Power Input (J3)
The Block Up Converter (BUC) and LNB input connector allows you to inject DC voltage
externally for the BUC and LNB voltage.
• 4 Pin Crimp Terminal Housing
• Mfg (Molex) P/N: 26-60-5040
Table 4-2. BUC & LNB DC Input Connector (J3)
Pin No.
Signal Name
Signal
1
LNB DC Input
2
Ground
GND
3
Ground
GND
4
BUC DC Input
4.5 Modem Connections (Standard)
4.5.1 EXT REF (J9)
The External Reference Port is a 50 Ohm Female SMA Connector. It accepts these frequencies:
MHz
1.0
1.544
2.0
2.048
5.0
10.0
Input Level: 0.1 Vp-p to 5 Vp-p (Sine or Square wave)