User Manual

5-4 Pulse Mode Operation (Model 2430 only) 2400 Series SourceMeter
®
User’s Manual
Pulse width
The pulse width can be set from 0.15msec to 5.00msec. However, depending on
how the SourceMeter is configured, the pulse width setting may not be achiev-
able. For example, if it takes 1.667msec to perform the signal measurement, the
minimum pulse width that can be achieved is 1.75msec (1.667msec signal mea-
surement plus 80µsec overhead). Therefore, if the pulse width setting is shorter
than what is achievable, the setting is ignored.
Table 5-1
SourceMeter pulse mode timing summary
Setting
1,2
Minimum
Pulse
Width
(msec)
Maxi-
mum
Pulse
Width
(msec)
Minimum
Output
Off Time
(msec)
W/ Dis-
play Dis-
abled
(msec)
Default source-measure cycle
with auto zero on, current
range <10A.
0.15 5.0 5.0 4.0
Source-Measure cycle with
auto zero off, current range
<10A.
0.15 5.0 2.9 1.9
Source only, current range
<10A.
0.15 5.0 2.9 1.9
Source-Measure cycle with
autozero on, current range set
to 10A.
0.15 2.5 5.0 4.0
Source-Measure cycle with
autozero off, current range set
to 10A.
0.15 2.5 2.90 1.9
Source only, current range
set to 10A.
0.15 2.5 2.90 1.9
1
Pulse delay is set to zero for all settings.
2
For consistent pulse period, duty cycle should not exceed 8%
Note: Minimum output off time assumes minimum pulse width setting.