2 Power Meter Operation
74 E4418B Power Meter User’s Guide
To set the TTL output:
1 Press , , . The current settings for the TTL
output are displayed under the , , and
softkeys.
2 To select whether the TTL output reflects an overlimit condition, under
limit condition or both, press
. Use any of the four arrow keys
to make a selection between , , and on the
pop- up menu that appears.
3 To select whether a high or low level TTL output represents a limits
failure, use the
softkey to toggle between and
TTL outputs can be disabled and re- enabled simply by pressing
.
Checking for Limit Failures
Limit failures are displayed in the appropriate field in the measurement
window on the power meter’s display as shown in
Figure 2- 14.
The same limit fail field is used by both channel and window limits.
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