Service manual

WARNING
CAPACITOR VOLTAGES. Capacitors inside the mainframe may
remain charged even when the mainframe has been
disconnected from its source of supply.
USE PROPER FUSES. For continued protection against fire
hazard, replace the line fuse(s) only with fuses of the same
current rating and type (such as normal blow, time delay, etc.).
Do not use repaired fuses or short-circuited fuseholders.
CAUTION
Static electricity is a major cause of component failure. To prevent
damage to the electrical components in the multimeter, observe
anti-static techniques whenever working on the multimeter.
Multimeter
Description
The Agilent E1326B multimeter is an "instrument" in the slots of a
VXIbus mainframe. As such, it is assigned an error queue, input and
output buffers, status registers, and is allocated a portion of mainframe
memory for reading storage.
NOTE
Instruments are based on the logical addresses of the plug-in modules. See
the Agilent 75000 Series B Installation and Getting Started Guide to set
the addresses to create an instrument.
The instrument may consist of the multimeter only (stand-alone
operation), or can include relay or FET multiplexers (scanning
multimeter operation). The instrument can be operated from the
mainframe front panel or from a computer using Standard Commands
for Programmable Instruments (SCPI).
In stand-alone operation, input signals are connected to the
multimeter’s external (faceplate) terminals. In scanning multimeter
operation, input signals are connected to the multiplexer channels. The
multimeter is linked to relay multiplexers via an analog bus cable. The
multimeter is linked to FET multiplexers via an analog bus cable and a
digital bus cable.
General Information 1-3