If Connections; Rx Connectors; Tx Connectors; J10 | Tx Mon Connector, Type 'Sma - Comtech EF Data CDM-750 Installation And Operation Manual

CDM-750 Advanced High-Speed Trunking Modem
Rear Panel Connectors and Pinouts
3.2

IF Connections

There may be DC voltages present on the Type 'N' Rx and Tx connectors, up to
a maximum of 48 volts.
CA UTIO N
3.2.1

Rx Connectors

Ref Des / Name
J9 L-BAND RX IN
J11 IF RX IN
3.2.2

Tx Connectors

Ref Des / Name
J12 L-BAND TX OUT
J13 IF TX OUT
3.2.3

J10 | TX MON Connector, Type 'SMA'

The J10 | TX MON connector is a Type 'SMA' female connector that provides a
user monitor output for the L-Band signal.
Ref Des / Name
J10 TX MON
Where a Low-Noise Block Down Converter (LNB) is employed in an L-Band
configuration, the J9 L-BAND RX IN connector features an LED, labeled "LNB
PWR ON", which lights amber to indicate the presence of DC voltage.
Connector Type
Type 'N' female
BNC
Where a Block Up Converter (BUC) is employed in an L-Band configuration, the
J12 L-BAND TX OUT connector features an LED, labeled "BUC PWR ON",
which lights amber to indicate the presence of DC voltage.
Connector Type
Type 'N' female
BNC
Connector Type
Type 'SMA' female
Description
Rx IF signal, L-Band
Rx IF signal, 70/140 MHz band
Note: 75Ω default, 50Ω optional
Description
Tx IF signal, L- band
Tx IF signal, 70/140 MHz band
75Ω default, 50Ω optional
Description
Monitor L-Band Tx IF Output
3–3
Revision 1
MN-CDM750
Direction
In
Direction
Out
Direction
Out