12
Front-panel operation
Programming examples: making voltage measurements with
the DVM
The following command sequence demonstrates how to measure voltage applied
to the DVM input of the power supply:
Charger channel (#2)
SENS2:FUNC ‘DVM’
‘ Select the DVM input function.
SENS2:NPLC 3
‘ Set integration rate to 3 PLC.
SENS2:AVER 8
‘ Set average reading count to 8.
READ2:ARR?
‘ Trigger and return 8 readings. The average
of the 8 readings is displayed on the front
panel.
Pulse current mode
Description
The Model 2308 can perform pulsed current measurements for dynamic loads.
The built-in measurements include:
1. Peak measured current - measures the peak (high) current of the pulse train.
2. Idle measured current - measures the idle (low) current of the pulse train.
3. Average transmitted current - measures the average current of the pulse
train.
The high measurement is triggered on the rising edge of the pulse (
Figure 7
) and
integration is performed for the time specified for the high measurement. The falling
edge of the pulse triggers the low measurement, and an integration is performed
for the time specified for the low measurement. An average measurement is
triggered on the rising edge, and covers both the high and low periods of the pulse
as specified by the average measurement time setting. The Model 2308 computes
one measurement parameter, high, low, or average, at a time. The desired
measurement mode on the front panel is selected with the
▲
or
▼
keys.
The GPIB commands TIMEOUT, SEARCH, DETECT, and FAST are available in
pulse current mode to optimize measurement speed. For the relevance and use
of these commands regarding a particular measurement application, refer to the
Model 2308 Instruction Manual, Section 3, Pulse Current Measurements.
The pulse measurement period can be selected manually or be automatically set
by the Model 2308. First, the user must specify a trigger level that serves as a
NOTE
See Section 3 in the Model 2308 Instruction Manual for
information on pulse current step and digitizing commands.
