JDS Uniphase CellAdvisor JD780A Series, User Manual

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JD780A Series Analyzers
Using Power Meter
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2 to display the reading with two decimal places
5.
To set a threshold and view the results with Pass/Fail indication, complete the following steps:
a. Press the LIMIT hot key.
b. Toggle the Limit soft key between On and Off to enable or disable the Pass/Fail indication.
c. Press the High Limit soft key, and then enter a threshold value.
d. Press the dBm unit soft key.
e. Press the Low Limit soft key, and then enter a threshold value.
f. Press the dBm unit soft key.
6.
Optional . Go to SAVE/LOAD > Save , and then select the save option from the choices available
for your measurement mode. See
“Using save” on page 31 for more information.
Measurement example
You can measure and understand a trend of a system output in operation where output power
constantly varies depending on the amount of calls being processed by the BTS or Repeater. In
addition, the Log graph benefits you to easily examine the discontinuance of output power caused by
the transmission problems or defective connection.
Figure 294 External power measurement of pulse power
Performing optical power measurements
The optical power measurement is available in conjunction with MP-series power sensor, which
measures optical power via a USB connection.
Connecting a power meter
Connecting an external optical power meter is mandatory for power measurements in the Optical
Power Meter mode. There are two optical power meters (sensors) those can be connected to the
instrument via USB. See
“JD780A Series Common Options” on page 585 for the optional power
meters.