External Reference (Cp3); Power Entry; Ac Power Connector; 48Vdc Option - Comtech EF Data SDM-300A Installation And Operation Manual

Installation
2.3.8

External Reference (CP3)

CP3 is a BNC connector for an external reference. The input impedance is 75Ω. For
normal operation, the reference signal is
Valid External Reference frequencies are 1, 5, 10, and 20 MHz.
2.3.9

Power Entry

2.3.9.1

AC Power Connector

A standard, detachable, non-locking, 3-prong power cord (IEC plug) supplies the
Alternating Current (AC) power to the modem. Observe the following:
2.3.9.2

48VDC Option

Specifications include:
2.3.10

Ground Connector (GND)

A #10-32 stud on the rear panel of the modem is used for connecting a common chassis
ground among all equipment.
Note: The AC power connector provides the safety ground.
2–20
Input Power 55W maximum, 40W typical
Input Voltage 90 to 132 or 175 to 264 VAC
Unit switches ranges automatically
Connector Type I.E.C
Fuse Protection 1A slo-blo
Line and neutral fusing
5 mm type fuses
Input Power 55W maximum, 40W typical
Input Voltage 38 to 64 VDC
Connector Type 20A, 3 screw terminal block
Fuse Protection 2A slo-blo
SDM-300A Satellite Modem
≥
0 dBm.
Rev. 4