Keithley 2302 Instruction Manual page 74

3-12 Pulse Current Measurements
TRIG NOT DETECTED message
The TRIG NOT DETECTED message is displayed when specific TLEV settings coupled
with specific TLEV ranges have been set and a trigger has not been detected. Refer to
Table 3-1
Table 3-1
TRIG NOT DETECTED message
TLEV setting
90mA for 100mA range 1A
90mA for 100mA range 5A
0.75A for 1A range
0.1A for 5A range
3.0A for 5A range
1.1A for 5A range
1.1A for 5A range
1
May appear depends on OUTPUT:
• If OFF, the message will appear.
• If ON, display of the message will depend on the trigger level setting. If trigger level setting > expected low
measurement and also trigger level setting < the expected high measurement, the message will not appear.
For example, if the expected pulse high is 2.2A and the expected pulse low is 0.5A, the output is on, and the
TLEV range is 5A, notice the following results:
Setting 0.3A
Setting 3.0A
Setting 1.1A
See steps 1–3 of the
setting the trigger level range. For the charger channel #2, the trigger level range setting is not
user selectable.
NOTE
Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176
TestEquipmentDepot.com
for the message preconditions.
TLEV range
1A
5A
5A
100mA
1A
TRIG NOT DETECTED is displayed (setting too low).
TRIG NOT DETECTED is displayed (setting too high).
The message will not display (setting correct).
"Pulse current measurement procedure" on page 3-10
Setting the trigger level and/or the trigger range may cause "PULSE CURR TRIG
NOT DETECTED" to appear.
Message displayed?
TRIG NOT DETECTED
No (not checked because TLEV setting does not
match TLEV range)
No (not checked because TLEV setting does not
match TLEV range)
1
May appear
1
May appear
1
May appear
No (not checked because TLEV setting of 5A
does not match TLEV range of 100mA)
No (not checked because TLEV setting of 5A
does not match TLEV range of 1A)
for information on