Specifications

2-22 888-2500-001 5/2/13
WARNING: Disconnect primary power prior to servicing.
DAX-1/DAX-3
Section 2 Installation
2.3.6.4 External Carrier or 10 MHz Reference Use
To use an externally generated carrier signal or 10 MHz reference signal, route the cable
to BNC connectors J11 for the external carrier or J10 for the 10 MHz reference on the
External I/O board. External carrier or 10 MHz reference must then be enabled via the
VT100 screen per the procedure below (See "6.2.2 Using VT100 for Metering, Status &
Configuration" on page 6-3, for accessing the page 4 VT100 configuration screen).
Follow this procedure to enable or disable either of these signal inputs:
STEP 1 Initiate VT100 programming and navigate to page 4
STEP 2 Type either "o" for 10 MHz Reference, or "p" for Carrier, to toggle the
selection between Internal or External for that signal
STEP 3 Selected action takes place within 1 second
2.3.6.5 Interlock Loop Connections
For normal operation the interlock relay must be closed creating a +12Vdc loop. If the
loop opens, a sense line to the PS Controller goes below a 10V threshold and the DAX
will mute and be de-energized to an Off condition. This loop is provided at J12 on the
External I/O board as INTLK LOOP, J12-2; and INTLK LOOP RETURN, J12-1.
NOTE:
If no external interlock loop is used, a shorting jumper wire must be placed across
J12-2 to J12-1 in order for the DAX transmitter to operate.