664
JD700B Series User’s Guide
Setting a multi-segment limit line
Procedure
1
Press the
LIMIT
hot key.
2
Press the
Multi Segment Line
soft key for Pass/Fail indication.
3
Toggle the
Limit
soft key between
Upper
and
Lower
to select the one to be displayed.
4
Set the number of segments for the selected upper or lower limit line, up to 50 segments.
Press the
# of Line
soft key.
Enter a value between 1 and 50 by using the numeric keys.
Press the
Enter
soft key.
5
Press the
Autoset
soft key to let the instrument set the limit for each segment and display the line.
6
To move the limit line, complete the following steps:
Select
Limit Up/Down
or
Limit Left/Right
.
Turn the rotary knob to move the line as desired. You can also manually enter a value.
7
To edit the segment properties, complete the following steps:
Press the
Edit Limit
soft key.
Press the
Move
soft key and then turn the rotary knob to select the segment to edit.
Select the menu option, from the following choices:
To hide the line for the selected segment, toggle the
Line
soft key and select
Off
.
To add a new point, press the
Add Point
soft key.
To delete the selected point, press the
Delete Point
soft key.
To change the position, press the
Frequency
or
Amplitude
soft key, and then turn the
rotary knob to change the value as desired.
8
Optional
. Go to
SAVE/LOAD > Save
, and then select
Limit
to save the limit settings.
See “Using save” on page 35 for more information.
Performing PIM detection (single and multiple carriers)
The Passive Intermodulation (PIM) Detection allows you to detect Uplink PIM across the full spectrum for
any technology. When PIM is detected, the normal repair mode is to replace the offending cable and what
you need to do is replacing the whole cable irrespective of the location of the fault.
Connecting cables
You can connect cables with a tap or without a tap as illustrated in Figure 398. If you have connected cables
directly from RRH and BBU without using the nTap, you must turn on the through mode (Thru) in the
Measure Setup menu.
A SFP/SFP+ transceiver that is connected to your JD700B series must be compatible with your DUT and
you must have your module information such as line rate, wavelength, and mode (MM or SM) handy.