Agilent 4155B/4156B User’s Guide Vol.2, Edition 5 6-31
Screen Organization
MEASURE Screen Group
INTEG TIME
INTEG TIME area shows integration time and corresponding number of power line
cycles (NPLC) for short, medium, and long modes. You can change integration time
for short and long modes, but not for medium mode.
The selected integration time is indicated by @, and is used for all measurement
units. You select the integration time by using the Short, Medium, or Long front
panel keys from any screen.
• SHORT
The TIME field for SHORT shows the integration time of the short mode. You
can change this integration time. NPLC value is calculated from the integration
time and power line frequency.
• MED
The TIME field for MED shows the integration time of the medium mode,
which is calculated from the power line frequency and NPLC value. NPLC
value is always 1. You cannot change it.
• LONG
The TIME field for LONG shows the integration time of the long mode, which
is calculated from the NPLC and power line frequency. You can change the
NPLC value.
For details, see “Integration Time” in Chapter 3.
WAIT TIME
For each unit, the 4155B/4156B automatically uses a wait time that depends on the
range value. This is the default wait time. In the WAIT TIME field, the value you
specify is multiplied times the default wait time. Allowed values are 0.0 to 10.0 with
0.1 step.
The wait time is the time that a unit waits after forcing a value. During the wait time,
the unit cannot start the measurement.
The default wait time is recommended. It is not easy to determine the best wait time.
If you specify a wait time that is too short, the measurement may start before the
output is stable. If too long, time will be wasted.
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