HP 8921A User Manual page 108

Cell site test set
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Chapter 5, AF Analyzer Screen
Block Diagram
TX Power
CAUTION:
Connecting a signal of >200 mW to the ANT IN port can cause instrument damage
(although internal protection circuits can typically withstand a short-duration signal of
1 or 2 Watts).
If the overpower circuit is triggered (signified by a warning message at the top of the
screen), remove the signal from the ANT IN port, and press the MEAS RESET key or
turn the Test Set off and on to reset it.
108
Transmitter Power measures RF power at the RF IN/OUT port.
Operating Considerations
Maximum signal levels at each port are printed on the front panel.
Only the RF IN/OUT port can be used for measuring TX Power on this screen.
When the
Input Port
for this measurement.
Use the Spectrum Analyzer to measure low-level RF power ( 200 mW) at the
ANT IN port.
See Also
Input Port field description, on page 422
TX Power field description, on page 426
TX Pwr Zero field description, on page 427
is set to
, four dashes (- - - -) appear in place of digits
Ant

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