Eia - Wavetek SAM 3000 Operation Handbook

by pressing "FCN" "STAT" "ENTER". The relative measurements described
below are then performed by pressing "FCN" "GAIN", and then inserting the
device to be tested.
Testing Taps
There are three significant parameters to test on a tap (broadband directional
coupler): through loss (input to through output); tap loss (input to tapped
output); and isolation (tapped output to through output). To test through loss,
first tune to the reference signal frequency and press "FCN" "GAIN". The top
line of the LCD will display "0.0 dB". Next, connect the signal to the tap input,
terminate the tapped output, and connect the through output to the SAM 3000
RF In. The through loss will be displayed on the top line of the LCD (typically
<1 dB).
SAM 3000
CAL OUT
Through Loss Test Set-up (Tap)
To test tap loss, (after setting up the 0.0 dB reference with a jumper cable) connect
the calibrated reference signal to the tap input, and with the through output
terminated, connect the SAM 3000 to the tapped output as shown. The tap loss
will be displayed on the top line of the LCD. (The tap loss should be the nominal
value of the tap; i.e., a 20 dB tap should have a tap loss of 20 dB).
CAL OUT
SAM 3000
Tap Loss Test Set-up
To test tap isolation, (after setting up the 0.0 dB reference with a jumper cable)
connect the calibrated reference signal to the tapped output, and with the input
terminated, connect the SAM 3000 to the through output as shown. The top line
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