Model OSL Series CG
PN: 10100-00055 Rev. B
2-5
Performance Verification
2-3
Verification Procedures
Return Loss Verification Procedures
1. Connect the LOAD of the DUT Calibration Tee to the adapter on
VNA Port 1.
2. Set the VNA as follows:
a. Channel Menu: SINGLE CHANEL
b. CH1
c. S-parameter: S11
d. GRAPH TYPE: LOG MAGNITUDE
e. Auto Scale
f. Marker Menu: MARKER 1 ON, DISPLAY MARKERS ON
g. Readout Marker: MARKER TO MAX
h. The MARKER 1 will display the highest point
(worst case in return loss) in frequency and a negative
number in dB (for example, –43.123 dB at 3 GHz).
i. Record the absolute value of MARKER 1 as return loss
(for example, 43.123 dB).
j. The Return Loss spec is 42 dB. The worst case:
| Marker 1 Readout in dB |
must be > 42 dB to pass this test.
k. For OSLN50 and OSLNF50, the return loss is specified for
3 frequency bands. The rotary knob should be used to move
the Marker 1 to read out the worst case return loss in each
band.