User Manual 1260-60A/B
Connector Pin Configuration 4-1
Chapter 4
CONNECTOR PIN CONFIGURATION
RF Relays
Figure 4-1 shows the location of the three RE switches on the
front panel of the 1260-60A,B module.
Relay Banks
Figure 4-2 shows the pin locations for the 34-pin Relay Bank
connector, 31. Table 4-1 lists the 31 pin signals. Connector 31 is
Racal Instruments Part Number 601856- 034. The mating
connectors are Racal Instruments Part Number 601855-034 for
the connector body, and 601857 for the pins.
Each of the two relay banks can be independently configured as
a sink or a source driver. Either the VXI mainframe or an external
supply can be selected.
WARNING
The user must use caution when wiring to the
module to prevent damage to the relay banks.
The 1260-60A,B contains some internal protection circuitry. The
internal current sourcing and handling capabilities of the module
and the mainframe must not be exceeded. Properly interface
external loads, especially if they are inductive. If an external
supply is used, the external B+ and B- lines MUST be connected
to the External B+ and the External Ground pins on 31. flyback-
clamping suppression diodes MUST be connected across any
inductive loads. Figures 4-3 through 4-6 show correct methods
interfacing to the 1260-60A,B relay banks.
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