Tektronix Keithley 2302, Quick Results Manual, Page: 27 / 38

18 Front panel operation
To change the range for the trigger level setting, place the blinking cursor on the “A” at the
far right end of line two of the display, and press the UP or DOWN key. After keying in the trig-
ger level (in amps), press ENTER to update the displayed range for that
trigger level setting only.
Charger Channel (#2) — Set the trigger level from 0 to 5A in 5mA steps.
NOTE
This is the same as battery channel but settings are for only one range, the 5A range:
0–5A in 5mA steps.
If the trigger level is incorrect or the DUT is not functioning properly, the message
“LONG INT TRIG NOT DETECTED” will be displayed. (See the LONG INT TRIG NOT
DETECTED
note on
page 19
.)
Trigger edge – “TRIGGER EDGE” sub-menus
Toggle between the RISING, FALLING, and NEITHER settings with the UP and DOWN
keys. With NEITHER selected, measurements will start as soon as the long integration function is
selected.
Timeout – “TIMEOUT” sub-menu
When the TIMEOUT value is reached, NO PULSE is displayed (top line of the front panel
display). The value for TIMEOUT should be set to a value greater than the long integration time
for a long integration reading.
Manually setting long integration time (“INTEGRATION TIME” sub-menu)
The value for LINT INT TIME for channel #1 or channel #2 can be specified in 0.850 sec to
60 sec (i.e. @ 60Hz) with the UP and DOWN keys.
Automatically setting long integration time (“AUTO TIME” sub-menu)
Press ENTER when “LINT AUTOTIME #1, #2”, “ACQUIRE TIMES” appears on the dis-
play. If the correct trigger level is selected in the previous step and the DUT is operating, the
Model 2306 will automatically determine the INTEGRATION times. If the trigger level is incor-
rect or the DUT is not functioning properly, the message “LONG INT TRIG NOT DETECTED”
will be displayed.
(See the
LONG INT TRIG NOT DETECTED
note on
page 19
.)
Long integration display mode
Long integration measurements are displayed with the long integration 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 deter-
mine 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 setting 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.