Bird Technologies SH-362S-Manual - Manual (Page 41)

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
For Distance-to-Fault (DTF) Measurement:
a. Press Measure then Measure: Match and then DTF (soft keys).
b. Press Ampt & Trace then Units (soft key) then select
VSWR or Rtn Loss dB.
c. Press Measure then select either Meter or Feet in Distance
Units (soft key).
d. Press DTF Wizard (soft key), follow instructions displayed,
and then skip to step h.
Note:
For Manual setup of DTF, follow steps e to m.
e. Connect the cable and antenna to the RF Out test port.
Note: Maximum input is +22 dBm (160 mW).
f. Press Cable then Cable List (soft keys).
g. Scroll to desired cable and press Select or Enter.
Note: May also manually enter cable Vp and Loss.
h. Press Ampt & Trace then Autoscale (soft key) to view trace
on display OR manually adjust scale with Max and Min
Level settings.
i. Press Sweep then Data Points (soft keys).
j. Adjust data points until stop distance is just greater than
the length of cable.
Note: If needed, repeat steps i and j.
k. Press Calibrate
l.
Select Open, Short, or Load (soft keys) on RF Out corre-
sponding with a calibrated open, short, or load connected
to the RF Out port.
m. Connect the cable and antenna to the RF Out test port.
Note: Maximum input is +22 dBm (160 mW).

For Gain & Loss Measurement:
a. Press Measure then Measure: Gain & Loss (soft keys).
b. Press Ampt & Trace and Pwr Out.
Note: Default is 0 dBm, may set as low as -40 dBm for amplifier gain
or as high as +10 dBm for antenna isolation measurements.
c. Press Calibrate, connect cable from the VNA RF Out to In
port, and press Cable from RF Out-In.
Note: Connect loads to VNA RF Out and In ports, press Loads on RF
Out & In and wait until done. This is recommended to measure
antenna isolation in the
-80 to -90 dB range.
d. Press Skip Other Cals.
e. Connect the device under test (e.g. cable, amplifier, filter,
antennas) to the VNA RF Out and In ports.
Note: Maximum input on each port is +22 dBm (160 mW).