JDS Uniphase CellAdvisor JD780A Series, User Manual

Page: 102 / 592

JD780A Series Analyzers
102
Using Interference Analyzer
a. Toggle the Period soft key and select Manual .
b. Press the Period soft key to enter the amount of time.
c. Enter a value by using the numeric keys.
d. Select the unit: Sec , mSec , or µSec .
5.
Press the TRIGGER hot key, and then do one of the following:
–
Select External for an external trigger source.
–
Select Video or Display Position for the internal trigger source.
6.
Press the PREV hard key to continue setting the gated sweep.
7.
Set the gate delay by completing the following steps:
a. Press the Gate Delay soft key.
b. Enter a value by using the numeric keys.
c. Select the unit: Sec , mSec , or µSec .
8.
Set the gate length by completing the following steps:
a. Press the Gate Length soft key.
b. Enter a value by using the numeric keys.
c. Select the unit: Sec , mSec , or µSec .
9.
Press the PREV hard key to enable gated sweeping.
10.
Toggle the Gated Sweep soft key and select On .
NOTE
This setting is not used in the Spectrum Replayer mode.
Conducting spectrum measurements
The spectrum measurement with an audible indicator is especially useful for locating interferer sources
with a directional antenna.
Setting trace
You can display up to six traces on the measurement chart simultaneously.
Procedure
1.
Press the TRACE/DISPLAY hard key.
2.
Press the Select Trace soft key, and then select the trace number: T1 , T2 , T3 , T4 , T5 , or T6 .
The legend shape of the selected trace changes from square to round to indicate that the trace is
the active one now.
3.
Do one of the following:
To Select Trace Legend
Clear current data and display with new
measurements Clear Write W
Display the input signal
’s maximum response only
(unlimited or for a certain amount of time)
Max Hold M