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34951A 4-Channel Isolated D/A Converter with Waveform Memory Module
The 34951A 4- Ch Isolated D/A module (DAC module) has four
independent, isolated DAC channels that output DC voltage up to
DC current up to
electrically isolated, you can stack or combine multiple DACs to have up to
64 V on a module. It also features a capability to specify and store
waveform points (Waveform Trace Mode).
You can control each channel manually, or use the onboard memory to
store multiple sequenced points.
Operating Considerations
See the Introduction to the Plug In Modules chapter of the 34980A
Mainframe User's Guide for detailed environmental operating conditions
for the 34980A mainframe and its installed modules. That guidance sets
maximum per channel current ratings at rated voltage for pollution degree
1 (dry) and pollution degree 2 (possible condensation) conditions, for the
DAC module.
Level Output Mode
The module can generate voltages between - 16 V DC and +16 V DC at 500
V resolution on any or all four channels. Each channel configured for
voltage output has hardware remote- sensing capability to ensure that an
accurate voltage is present at the load. With the remote sensing feature,
the DAC channel outputs an additional voltage to compensate for the
voltage drop in the test leads. Thus, using the sense connections, the load
voltage equals the programmed voltage as long as the resistance in each
sense lead is less than 2.5 and the maximum voltage drop in the output
leads is 0.5 volts.
When using the remote- sensing feature, connect sense wires from the load
to the High Sense and Low Sense terminals for the desired channels.
Each channel can also generate current between - 20 mA and +20 mA at
630 nA resolution. When outputting current the High Sense and Low Sense
terminals are not used and are opened. For protection, each channel
incorporates a fuse that will open at greater than 20 mA. If an overload
condition exists, the fuse will open, but no error or SRQ will be generated.
To reset the fuse, remove the overload and wait a few minutes for the fuse
to cool.
Agilent 34951A 4-Channel Isolated D/A Converter Module User's Guide
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34951A 4-Channel Isolated D/A Converter with Waveform Memory Module
20 mA (Level Output Mode). Since the DACs are
To ensure that an accurate voltage is present at the loads, it is
N O T E
recommended that you use remote-sensing. However, if
remote-sensing is not used, do not connect loads or cables to the
remote-sensing terminals (H Sense and L Sense).
16V or
1
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