Compact Flash (J9); Power Input (J7); Chassis Connections (Standard); Ext Ref (J8) - Comtech EF Data Radyne DMD1050 Installation And Operation Manual

DMD1050 Satellite Modem Board
4.2

Compact Flash (J9)

The compact flash slot is located on the right side as viewed from the rear of the unit. A 256 Mbit
flash memory card stores all the modem M&C and operational data. It must be present when the
modem is operating.
4.3

Power Input (J7)

The Input DC Power for the modem board requires +21 to +24.5 Volts DC. Manufacturer part
number for this connector is referenced in Appendix E. Refer to Table 4-1 for pin out
descriptions.
Pin No.
1
2
3
4
4.4

Chassis Connections (Standard)

4.4.1 EXT REF (J8)

The External Reference Port is a 50 Ohm Female SMA Connector and will accept the following
frequencies: 1.0, 1.544, 2.0, 2.048, 5.0, and 10.0 MHz).
Input Level:

4.4.2 TX L-Band IF (J1)

The Transmit IF Output Port is a 50 Ohm SMA Female Connector that can be used for L-Band
IF. The power level is programmable from 0 to -25 dBm, in 0.1 dBm steps. The IF Frequency
can be programmed to 950 – 2050 MHz, in 1 Hz Steps.

4.4.3 RX L-Band IF (J2)

The Receive IF Input Port is a 50 Ohm SMA Female Connector that can be used for L-Band IF.
The IF Frequency can be programmed from 950 to 2050 MHz in 1 Hz Steps.
MN-DMD1050
Revision 9
Table 4-1 DC Input Power Ports (J7)
Signal Name
Ground
Ground
24 Volts DC
24 Volts DC
Table 4-1. Power Input Connector (J7)
0.1 Vp-p to 5 Vp-p (Sine or Square wave)
Rear Panel Interface
Signal
GND
GND
--­
--­
4–5