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1 tx/if output (cp1), 2 rx/if input (cp2), 3 receive data (cp3) – Comtech EF Data SDM-9000 User Manual

Page 48: 4 send data (cp4), 5 external clock (cp5)

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Installation

SDM-9000 Satellite Modem

2–6

Rev. 4

2.4.1 TX/IF Output (CP1)

The TX/IF output connection is a BNC connector used for the transmit IF signal. The
output impedance is 75

(50

optional). The output power level is +5 to -20 dBm.

In normal operation, the output is a modulated carrier with center frequency between 50
and 180 MHz.

2.4.2 RX/IF Input (CP2)

The RX/IF input connection is a BNC connector used for the receive IF signal. The input
impedance is 75

(50

optional). For normal operation, the desired carrier signal level

should be between -25 and -45 dBm.
The signal frequency of the receive RX/IF input is between 50 and 180 MHz.

2.4.3 Receive Data (CP3)

The Receive Data connection is a BNC connector used for the terrestrial data output
(G.703 interface only). The output impedance is 75

.

2.4.4 Send Data (CP4)

The Send Data connection is a BNC connector used for the terrestrial data input (G.703
interface only). The input impedance is 75

.

2.4.5 External Clock (CP5)

The External Clock connection is a BNC connector used for the external buffer clock
input (Ext Clk). The input impedance is 75

. This input is used for the G.703 interface

only. The external clock input for ECL/MIL-STD-188 interfaces is provided on the J8
connector.