Cable Loss Measurement
The following frequency domain measurement is an example of a Cable Loss measurement
made over a selectable frequency range following the Marker setting steps 32 to 35.
NOTE:
If SWR/Return Loss measurement has not been done, calibration must be per-
formed before determining the cable loss.
Step 36. Disconnect the load from the end of the cable and replace it with a short.
Step 37. Press the
MODE
key.
Step 38. Use the Up/Down arrow key to scroll to
CABLE LOSS - ONE PORT
.
Step 39. Press
ENTER
to select Cable Loss measurement mode.
Setting the Amplitude Scale
The following procedure sets the scale display.
Step 40. Press the
AMPLITUDE
key to call up the Scale Menu.
Step 41. Press the TOP soft key and enter 0 using the keypad or Up/Down arrow key.
Press
ENTER
to set the top scale.
Step 42. Press the BOTTOM soft key and enter 1 using the keypad or Up/Down arrow
key. Press
ENTER
to set the bottom scale.
NOTE:
An alternative method of setting the amplitude scale is to use the
AUTO SCAL
E
key.
Setting the Segment Limit LInes
The following procedure sets the segment limit lines.
Step 43. Press the
AMPLITUDE
or
LIMIT
key to call up the Segment Limit Line menu.
Step 44. Press the
LIMIT
soft key to activate the segment limit line table.
Step 45. Use the Up/Down arrow key to scroll to segment #1 and press the
EDIT SEG-
MENT
soft key to change the parameter values for segment #1.
Step 46. Use the Up/Down arrow key to scroll to the
START FREQ
parameter and press
ENTER
to edit the value.
Step 47. Enter 8, 2, 4 using the key pad or the Up/Down arrow key. Press
ENTER
to set
the Start Frequency to 824 MHz.
Step 48. Use the Up/Down arrow key to scroll to the
START FREQ LIMIT
parameter and
press
ENTER
to edit the value.
Step 49. Enter ., 5. Press
ENTER
to set the Start Frequency Limit value.
Step 50. Use the Up/Down arrow key to scroll to the
STOP FREQ
parameter and press
ENTER
to edit the value.
4-14
Chapter 4 Measurements