14
Front panel operation
Integration time (auto time setting) “AUTO TIME” sub-menu
Press ENTER when “ACQUIRE TIMES” appears on the display. If the correct trigger level
is selected in the previous step and the DUT is operating, the Model 2306 will automatically
determine the HIGH, LOW, and AVERAGE times. If the trigger level is incorrect or the DUT is
not functioning properly, the message “PULSE CURR TRIG NOT DETECTED” will be
displayed. (See note No Pulses Detected message on
page 15
.)
Trigger delay (if necessary) channel #1 and channel #2:
The trigger level is changed in the TRIGGER LEVEL sub-menu by pressing the
UP or DOWN
key.
Range is 0 – 0.100sec in 10
µ
sec increments.
NOTE
The high, low, or average integration times can be set either manually or
automatically. When a pulse is detected, there is a 15µsec trigger latency before the
integration time begins. An additional user trigger delay can be set to allow the
leading edge pulse overshoot to settle. Regardless of the user trigger delay setting,
the internal trigger delay is always present.
Average readings count (if necessary) Channel #1 and Channel #2:
The AVERAGE READINGS sub-menu of the PULSE CURRENT #1/#2 menu item is used
to set the
average readings count for pulse current measurements. This count specifies the number of
measurements (integrations) to average for each reading. Range is
1–100.
Pulse current display mode
Pulse current measurements are displayed with the pulse current display mode selected. This
display mode is selected as follows:
NOTE
To display measured readings if the instrument is in the settings mode, press the SET
key until the blinking stops (the measured readings can then be displayed). To
determine if the instrument is in the settings mode, check for a blinking cursor in a
digit of the voltage or current field (if present, the instrument is in the settings mode).
1. Press the DISPLAY key to access the display menu.
2. If the desired active display is not selected, use the LEFT and RIGHT keys to toggle the
active display. The top line of the display will show which output channel is active.
3. Press the UP or DOWN key until “PULSE CURRENT” is displayed, and press ENTER.
4. Use the UP or DOWN key to display the desired pulse measurement; high, low, or
average.
