User manual

Section 5: Range, Digits, Rate, Bandwidth, and Filter Series 3700 System Switch/Multimeter Reference Manual
5-6 3700S-901-01 Rev. C / July 2008
The front panel RATE settings for all but the AC functions are explained as
follows:
FAST sets integration time to 0.1 PLC. Use FAST if speed is of primary
importance (at the expense of increased reading noise and fewer usable
digits).
MEDium sets integration time to 1 PLC. Use MEDium when a compromise
between noise performance and speed is acceptable.
SLOW sets integration time to 5 PLC. SLOW provides better noise
performance at the expense of speed.
For the AC functions (ACV, ACV dB, and ACI), the RATE key sets integration
time and bandwidth. As listed in the following table, FAST sets NPLC to 1, while
the MEDium and SLOW NPLC settings are ignored.
Function
Slow
Medium
Fast
DCV, DCI
NPLC=5
NPLC=1
NPLC=0.1
ACV, ACI
NPLC=X,
BW=3
NPLC=X, BW=30
NPLC=1,
BW=300
Ω2, Ω4, CSΩ
NPLC=5
NPLC=1
NPLC=0.1
FREQ, PERIOD
APER=0.250s
APER=0.1s
APER=0.01s
Continuity
X
X
NPLC=0.006
NOTES:
NPLC = Number of power line cycles.
BW = Bandwidth (in Hz).
APER = Aperture in seconds.
X = Setting ignored (fixed NPLC).
You can use unique rate settings for each function when using the front panel or
the remote interface.
NOTE Rate cannot be set for continuity; it is fixed at 0.006PLC.