3 Menu Reference
124 E4418B Power Meter User’s Guide
•
Press this softkey to enter the lower measurement limit. The
measurement units of the limits will be the same as the measurement
units in the currently selected window. On instrument preset, the default
value is either –90.000
dBm, 1 pW, –120 dB, or 100p% depending on the
windows unit. Use the
, , , and keys to change the
value. To confirm your choice, press the appropriate measurement units.
must be less than .
•
Press this softkey to access a menu which allows you to control the rear
panel TTL outputs. You can:
Switch the TTL outputs on or off.
Set the TTL output level to active high or low.
Determine whether the TTL output represents an over limit condition,
under limit condition or both.
■
Press this softkey to toggle between switching the TTL output off and
on.
■
Press this softkey to select whether the TTL output reflects an
overlimit condition, under limit condition or both.
■
Press this softkey to select whether a high or low level TTL output
represents a limits failure.
Press this key to move through all the softkeys available on a particular level of
a menu. The bottom right of the power meter display indicates the number of
pages in the menu. For example, if “1 of 2” is displayed, pressing
moves
you to “2 of 2”. Pressing again moves you back to “1 of 2”.
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