Keysight Technologies 3458A Guide D'utilisation page 301

1 - 10 PLC in 1 PLC steps
10 - 1000 PLC in 10 PLC steps.
Power-on power_line_cycles = 10
Default power_line_cycles = 0 (selects minimum integration time of 500 ns)
The relationship of the integration time (expressed in PLCs), the A/D converter's
reference frequency (LFREQ command), and the digits of resolution is:
[a] Analog measurement method only (SETACV ANA command)
[b] For all ranges except the 10 W OHM(F) range and the 100 mV DCV range. The 10 W OHM(F) range has a maximum
Remarks
– For the ACV and ACDCV (SETACV ANA method only), ACT, ACDCI, DCI, DCV,
– Since the NPLC and APER commands both set the integration time, executing
Keysight 3458A User's Guide
Digits of resolution
DCI,
DCV
OHM(F)
4.5 4.5
5.5 5.5
6.5 6.5
[b]
7.5
7.5
[b] [b]
8.5 7.5
of 6.5 digits and the 100 mV DCV range has a maximum of 7.5 range.
OHM, and OHMF measurement functions, resolution is determined by the A/D
converter's integration time. The integration time has no effect on FREQ or
PER. For sampled ACV or ACDCV (SETACV SYNC or SETACV RNDM), the
integration time is selected automatically and the specified resolution is
achieved by varying the number of samples taken. For direct- or sub-sampled
digitizing, the integration time is fixed and cannot be changed.
either will cancel the integration time previously established by the other. The
RES command or the %_resolution parameter of a function command or the
RANGE command can also be used to indirectly select an integration time. An
Power line cycles (NPLC command)
ACI, ACDCI,
Reference frequency
[a]
ACV ,
(LFREQ) = 60 Hz
[a]
ACDCV
4.5 0 - .000030
5.5 .000036 - .000360
6.5 .000366 - .030000
6.5 .030006 - 1
6.5 2 - 1000
Command Reference
Reference frequency
(LFREQ) = 50 Hz
0 - .000025
.000030 - .000300
.000305 - .025000
.025005 - 1
2 - 1000
6
301