Keysight 34460A, Руководство по эксплуатации и обслуживанию

Страница: 71 / 583

To set integration time precisely, instead of using PLCs, press
Aperture Time
and use the left/right up/-
down arrow keys to specify integration time in seconds. For Aperture Time , you can specify from 200 µs
(20 µs with the DIG option) to 1 s integration time (2 µs resolution):
Step 4:
Use the
Units
softkey to display temperature in degrees
C
elsius, degrees
F
ahrenheit, or
K
elvin.
Step 5:
Press
Probe Settings
, the default probe settings are:
Step 6: To select another probe type, press Probe and press one of the softkeys:
Additional settings for each probe type are described in the sections below.
For the RTD 2w or RTD 4w Probe Type...
The RTD 2w or RTD 4w probe types allow you to set R0 and to enable/disable offset compensation and/or
the low-power mode:
R0
: R0 is the nominal resistance of an RTD at 0 °C. Default 100 Ω
OffstComp Enables or disables offset compensation. Offset compensation removes the effects of small dc
voltages in the circuit being measured. The technique involves taking the difference between two res-
istance measurements, one with the current source set to the normal value, and one with the current
source set to a lower value. Enabling Offset Compensation approximately doubles the reading time.
Low Power : Disables (Off) or enables (On) low power measurements. The low power mode sources less
test current per measurement range than is normally sourced for standard resistance measurements, to
reduce power dissipation and self-heating in the probe.
Press
Done
to return to the main temperature menu.
Features and Functions
72
Keysight True
volt
Series Operating and Service Guide