Keysight Technologies 3458A Guide D'utilisation page 202

5 Digitizing
DCV remarks
– For DCV digitizing, you should use the SINT memory/output format when the
To achieve the fastest possible transfer of samples to reading memory and/or
NOTE
the controller, you can use the SINT output/memory format for integration times
up to 10.8 μs. However when the integration time is >1.4 μs, the A/D converter is
producing more bits of resolution than can be accommodated by the SINT
format (the least significant bit(s) are discarded). Whenever using the SINT
output/memory format with integration times >10.8 μs, the multimeter must
convert the data coming from the A/D converter and cannot maintain the
high-speed mode. You should use the DINT memory/output format (which is
compatible with the high-speed mode) when the integration time is >10.8 μs.
– Whenever making measurements using the TIMER sample event or the SWEEP
– The multimeter's triggering hierarchy (trigger arm event, trigger event, and
202
integration time is ≤1.4 µs. Use the DINT memory/output format when the
integration time is >1.4 µs. (These formats are discussed in detail in
Chapter 4.)
command, autorange is disabled. You can use the range selected by PRESET
DIG (10 V range) or specify the range as the first parameter of the DCV or
RANGE command (max_input parameter). The max_input parameters and the
ranges they select are:
max._input parameter
0 to .12
>.12 to 1.2
>1.2 to 12
>12 to 120
>120 to 1E3
sample event) applies to DCV digitizing. Refer to
information on the triggering hierarchy. For DCV digitizing, you can use either
the TIMER sample event and the NRDGS n,TIMER command: or the SWEEP
command. The NRDGS and SWEEP commands are interchangeable, the
Selects range
100 mV
1 V
10 V
100 V
1000 V
Chapter 4
Keysight 3458A User's Guide
Full scale
120 mV
1.2 V
12 V
120 V
1050 V
for more