ADCMT 7451A User Manual

7451A/7461A/7461P Digital Multimeter Operation Manual
5.8.5 Level Trigger and Delta Trigger
5-27
display digit settings.
7461A/61P: 1199999, 319999 (3 A range), 749999 (750 V range)
7451A: 319999, 119999 (DCV-Bch), 74999 (750 V range)
Example: Set DELTA to 1000 when setting the threshold level to 10 mV in DCV 10V range of the
7461A.
If the setting exceeds the maximum display, the trigger cannot be detected.
Example: When DELTA is set to 200000 in DCV-Bch of the 7451A.
The trigger is detected when the polarity of change and direction of change judgment conditions are satis-
fied (refer to Table 5-8).
Figure 5-6 Delta Trigger
Table 5-8 Delta Trigger Detection Pattern
PATRN CONV CONV CONV EMISS EMISS EMISS
SLOPE POSI NEGA BOTH POSI NEGA BOTH
Trigger detec-
tion pattern
Polarity of
change judg-
ment condition
V2-V1 > 0 V2-V1 < 0 V2-V1  0 V3-V2 > 0 V3-V2 < 0 V3-V2  0
Direction of
change judg-
ment condition
absolute value (V2-V1) > DELTA & absolute
value(V3-V2) < DELTA
absolute value (V2-V1) < DELTA & absolute
value (V3-V2) > DELTA
For CONV: Both plus and minus polarities are allowed in V3-V2.
For EMISS: Both plus and minus polarities are allowed in V2-V1.

ADCMT 7451A Specifications

General

Brand	ADCMT
Model	7451A
Category	Multimeter
Language	English