Comtech EF Data CRS-180 - Manual (Page 42)

CRS-180 70/140 MHz IF 1:1 Redundancy Switch MN/CRS180.IOM
Switch Connectors and Pinouts Revision 11
3–6
3.2.2 Antenna Side Connectors
Two 50Ω female BNC connectors on the antenna side of the CRS-180 (Figure 3-4) provide the
coaxial cable connections to the outdoor transmit and receive equipment.
• See Sect. 1.3.1 in Chapter 1. INTRODUCTION for information about the LED
Indicators.
• See Sect. 1.3.1 in Chapter 1. INTRODUCTION and Sect. 4.6 in Chapter 4. MODEM
AND SWITCH CONFIGURATION for information about the “Switch Conditions”
DIP Switches.
Figure 3-4. CRS-180 – Antenna Side Connectors and Ground Stud
3.2.2.1 IF Connectors (50Ω BNC)
The 50Ω Type ‘BNC’ female connectors on the antenna side of the
CRS-180 provide the coaxial cable connections to the outdoor
receive and transmit equipment.
Table 3-4. J7 (Rx) and J8 (Tx) Type ‘BNC’ Connectors
Ref Des Name Connector Type Function
J7 Rx BNC RF Input
J8 Tx BNC RF Output
3.2.2.2 Ground Stud
CAUTION – PROPER GROUNDING PROTECTION IS REQUIRED. THE INSTALLATION
INSTRUCTIONS REQUIRE THAT YOU MUST ENSURE THE INTEGRITY OF THE
PROTECTIVE EARTH AND THAT YOU MUST MAINTAIN THE EQUIPMENT’S
CONNECTION TO THE PROTECTIVE EARTH AT ALL TIMES.
Use the #10-32 stud provided on the antenna side of the Switch for connecting a
common chassis ground among equipment.