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2308-900-01 Rev. A / July 2008
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Section Topics
3-15
Model 2308 Portable Device Battery/Charger Simulator User’s Manual
Section 3: Pulse Current Measurements
SENSe[1]:PCURrent:TIME
Applies to battery channel (#1)
SENSe2:PCURrent:TIME
Applies to charger channel (#2)
When manually setting the pulse HIGH, LOW, AND AVERage time:
1. The integration time should only cover the portion of the pulse to be measured.
2. Factor in trigger delays (both internal and user) when determining integration times. Before
the integration process begins (after pulse detection) the internal trigger delay of 10 µs (for
code execution), in addition to any user-specified trigger delay, must elapse.
SENSe[1]:PCURrent:TIME:DIGitize <NRf>
Applies to battery channel (#1)
SENSe2:PCURrent:TIME:DIGitize <NRf>
Applies to charger channel (#2)
This command allows you to specify the integration time that occurs when Model 2308 is digitizing
or in burst mode (
SENS:PCUR:SYNC:STAT
is OFF for the particular channel). This feature allows
you to sample a pulse load for a longer time by increasing the integration time from 33.3
μ
s.
SENSe[1]:PCURrent:SYNChronize <b>
Applies to battery channel (#1)
SENSe2:PCURrent:SYNChronize <b>
Applies to charger channel (#2)
Boolean parameters:
• ON or 1 - Enables trigger synchronization for pulse current measurements. A pulse current
reading will not trigger until the specified trigger level is detected and the specified trigger
delay (both the internal plus the user delay) period expires.
• OFF or 0 - Disables trigger synchronization and selects pulse current digitization. See
Pulse
current digitization
for details on digitizing a current pulse or waveform.
:TLEVel Commands
A valid trigger level for detecting the pulse is needed whether trigger synchronization is ON or OFF
(see
:SYNChronize
commands above).
SENSe[1]:PCURrent:SYNChronize:DELay <NRf>
Applies to battery channel (#1)
SENSe2:PCURrent:SYNChronize:DELay <NRf>
Applies to charger channel (#2)
1. The smallest step size for trigger delay is 10 µsec. If you specify a smaller step size, it is
adjusted up to the next 10 µsec step value (e.g., 43 µsec is adjusted up to 50 µsec).
2. After pulse detection but before the integration process begins, the internal trigger delay of
10
μ
sec (for code execution) in addition to any user specified trigger delay must elapse.
This command is used to set the user trigger delay.
3. Make sure this setting works with the
:TIME
settings to produce an accurate reading.
Although AUTO accounts for internal trigger delay, HIGH, LOW, and AVERage do not. Note
that none of the TIME commands account for the user trigger delay.
SENSe[1]: PulseCURrent:FAST <b>
Applies to battery channel (#1)
SENSe2: PulseCURrent:FAST <b>
Applies to charger channel (#2)
See
Using FAST, SEARch, and DETect
for detailed usage information.
NOTE
AUTO time will account for the internal trigger delay (10
μ
sec) but not for any
user trigger delay (user trigger delay is set using the DELay command).
NOTE
Pulse current digitization is also known as pulse current burst mode.
Summary of Contents for 2308
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