Agilent 34980A Multifunction Switch/Measure Unit *34980-90005*
Agilent 34980A Multifunction Switch/Measure Unit *34980-90005*
Agilent 34980A Multifunction Switch/Measure Unit *34980-90005*
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OUT<br />
IN<br />
Alarms<br />
Data Acquisition Circuitry<br />
External<br />
Trigger<br />
Control<br />
Introduction to the <strong>34980A</strong> 1<br />
As shown below, the <strong>34980A</strong>'s main system processor controls all of the<br />
basic functionality of the instrument. This is where the instrument<br />
communicates with the plug- in modules, interacts with command<br />
transactions over the remote interfaces, and controls the optional<br />
internal DMM. The main system processor also performs Mx+B scaling<br />
operations, monitors alarm conditions, converts transducer measurements<br />
to engineering units, adds time stamp information to scanned<br />
measurements, and stores measurement data in memory.<br />
LAN<br />
USB<br />
GPIB<br />
AC<br />
Power<br />
Optional<br />
Internal<br />
DMM<br />
Main<br />
System<br />
Processor<br />
I<br />
Hi <strong>Measure</strong><br />
Lo <strong>Measure</strong><br />
Hi Sense<br />
Lo Sense<br />
Analog<br />
Bus<br />
Digital Bus<br />
ABUS1<br />
ABUS2<br />
ABUS3<br />
ABUS4<br />
The main system processor also controls activity on the four hardware<br />
alarm outputs and external triggering lines. You can use the alarm output<br />
lines to trigger external alarm lights, sirens, or send a TTL pulse to your<br />
control system.<br />
The <strong>34980A</strong> provides four 2- wire internal Analog Buses for easier signal<br />
routing. You can route your measurements directly to the optional<br />
internal DMM using the <strong>34980A</strong> multiplexer and matrix modules or you<br />
can connect to external signals via the Analog Bus connector located on<br />
the instrument's rear panel. Since four 2- wire buses are provided, you<br />
can dedicate one bus for use with the internal DMM while using the<br />
other three buses for module extensions or additional signal routing<br />
between modules.<br />
<strong>Agilent</strong> <strong>34980A</strong> Mainframe User’s Guide 5<br />
Slot<br />
1000<br />
Slot<br />
2000<br />
Slot<br />
3000<br />
Slot<br />
8000