16 Getting Started
Chapter 1
CAUTION
STATIC ELECTRICITY.
Static electricity is a major cause of component
failure. To prevent damage to the electrical components in the multiplexer,
observe anti-static techniques whenever removing, configuring, and
installing a module. The multiplexer is susceptible to static discharges.
Do not install the multiplexer module without its metal shield attached.
Setting the Logical
Address Switch
The logical address for the E1476A multiplexer is set with the Logical
Address Switch on the module. The logical address switch factory setting
for the E1476A is 112. Valid addresses are from 1 to 254 for static
configuration (the address you set on the switch) and address 255 for
dynamic configuration.
The E1476A supports dynamic configuration of the address. This means
the address is set programmatically by the resource manager when it
encounters a module with address 255 that supports dynamic configuration.
See Figure 1-5 for switch position information.
NOTE
When using the E1406 Command Module, the address switch value must
be a multiple of 8 if the module is the first module in a switchbox used with
a VXIbus command module using SCPI commands. When in the scanning
voltmeter configuration, the address switch value must be sequential to the
voltmeter address.
Figure 1-5. Setting the Logical Address Switch
1=CLOSED
0=OPEN
CLOSED = Switch Set To 1 (ON)
OPEN = Switch Set To 0 (OFF)
Logical Address = 112
64+32+16=112
Decimal Value
1
2
8
3
2
6
4
1
6
4
8
2
1
Location
Logical
Address
Switch
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