Long Integration Measurements 4-11
indicates that the integration time has not been updated. To update the integration
time, you will have to again select AUTO TIME after the output is turned ON.
4.
Press the DISPLAY key and select the LONG INTEGRATION display type for the
desired channel.
5.
Observe the long integration readings on the display.
General notes
•
Long integration readings will not be taken if the active channel is not the same as the
selected channel. For example, if the battery channel (#1) is set to LINT and the active
channel is the charger channel (#2) then, long integration readings will not be taken on
the battery channel (#1). Therefore, while the charger channel (#2) is active with the
LINT function selected on the battery channel (#1), you will not incur the LINT integra-
tion time or LINT timeout from the battery channel while waiting for responses from the
charger channel (#2). Since no long integration readings are being taken, you will not get
any information on whether the pulse is present or not on the battery channel (#1).
•
Make sure the voltage and current settings are appropriate for DUT.
•
If a pulse timeout occurs (no pulses detected), current will not be measured (i.e. ----A)
and the “NO PULSE” message will be displayed. Pulses are not detected with the output
OFF. With the output ON, pulses will not be detected if the trigger level is too low or too
high. Perform the “Determining correct trigger level (long integration)” procedure on
page 4-11 to find an appropriate trigger level.
•
While the “NO PULSE” message is displayed, the instrument continues to search for a
pulse. The search can be terminated by pressing any front panel key. The “NOT TRIG”
message replaces the “NO PULSE” message. To restart the search, press
▲
or
▼
key
while displaying long integration readings. The timeout or pulse detection will need to
elapse before the display changes.
•
To stop taking long integration readings, press any front panel key. As long as the
instrument remains in the long integration display state, the measurement process can be
resumed by pressing
▲
or
▼
key. While readings are not being taken, the bottom line
displays the last valid long integration reading, or dashes if no pulse detected before
being stopped.
Determining correct trigger level (long integration)
1.
After selecting the appropriate voltage and current values, turn on the output.
2.
Select the long integration display type. If the trigger level is too low or too high, the
“NO PULSE” message will be displayed. If long integration measurements are instead
being displayed, the trigger level is valid. You can skip the rest of this procedure.
3.
Go into the main menu (access the main menu in step 3, press the MENU key twice —
the first press will stop the readings while the second press accesses the menu.). Select
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