SWR or Return Loss Measurement
Step 15. Disconnect the Load and connect the test port extension cable to the Site Master
test port.
Step 16. Connect the Load to the open end of the test port extension cable as shown in
Figure 4-4.
Step 17. Observe the displayed measurement. Figures 4-5 and 4-6 show typical SWR and
Return Loss measurements with markers and limit line set.
Set the Amplitude Scale and Limit Line
The following procedure sets the top and bottom scale display.
Step 18. Press the
AMPLITUDE
or
LIMIT
key to call up the Scale Menu.
Step 19. In SWR mode, press the
TOP
soft key and enter 1, ., 3 using the keypad or
Up/Down arrow key. Press
ENTER
to set the top scale. (In Return Loss mode,
enter 0.)
Step 20. In SWR mode, press the
BOTTOM
soft key and enter 1 using the keypad or
Up/Down arrow key. Press
ENTER
to set the bottom scale. (In Return Loss
mode, enter 5, 4.)
Step 21. Press the
LIMIT EDIT
soft key. For Freq-SWR, enter 1, ., 2. For Freq-Return
Loss, enter 2, 1 using the keypad or Up/Down arrow key. Press
ENTER
to set
the bottom limit line.
4-8
Chapter 4 Measurements
HOLD
RUN
START
CAL
AUTO
SCALE
SAVE
SETUP
RECALL
SETUP
LIMIT
MARKER
SAVE
DISPLAY
RECALL
DISPLAY
MODE
FREQ/DIST
AMPLITUDE
SWEEP
SYS
ENTER
CLEAR
ESCAPE
ON
OFF
/
1
2
4
5
6
7
8
9
0
3
+
-
.
Site Master S332B
LOAD
SHORT
MEASUREMENT
RFOUT/REFLECTION
TEST PORT
OPEN
LOAD
SHORT
CALIBRATION
Figure 4-4.
Cable Measurement Test Setup
