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The measurement of the photo-receiver DUT relies
on a characterized modulator standard. If a charac
-
terized modulator is not available, an S2P file can be
created by using a characterized photo-diode and
de-embedding it from the 12-term calibration per
-
formed in Step 2.
Step 6. With the measurement set-up as shown in Fig
-
ure 8-36, select DE-EMBED O/E S2P (DETEC
-
TOR STD) (menu DE2, previous page).
This brings up menu DE5 (top left).
Step 7.
Select READ CAL FILE FROM SD CARD or
READ CAL FILE FROM USB DRIVE depending
on where the 12-term calibration was saved in Step
3.
This brings up menu DSK2 (middle left).
Step 8. Select the calibration file and press Enter.
Step 9.
Select READ THE S2P FILE FROM SD CARD or
READ THE S2P FILE FROM USB DRIVE (menu
DE5A, bottom left). This is the characterization data
file for the photo-diode transfer standard. This will
de-embed the photo-diode for an O/E measurement.
Step 10.
Press the Appl key, select O/E MEASUREMENT.
Again, then press Enter. This recalls menu DE2 (left).
OPTICAL APPLICATION MEASUREMENTS
8-70 37xxxE OM
MENU DE5
DE-EMBED O/E S2P
ORIGINAL CAL FILE
WITH FWD TRANS
CORRECTION
READ CAL FILE
FROM SD CARD
READ CAL FILE
FROM USB DRIVE
PRESS <ENTER>
TO SELECT
PRESS <CLEAR>
TO ABORT
MENU DSK2
SELECT FILE
TO READ
TESTCAL CAL
PREVIOUS MENU
PRESS <ENTER>
TO SELECT
PRESS <1> FOR
PREVIOUS PAGE
PRESS <2> FOR
NEXT PAGE
MENU DE5A
DE-EMBED E/O S2P
TRANSFER STANDARD
TO BE DE-EMBEDDED
(DETECTOR STD)
READ S2P FILE
FROM SD CARD
READ S2P FILE
FROM USB DRIVE
PRESS <ENTER>
TO SELECT
PRESS <CLEAR>
TO ABORT