TB 9-6625-2309-35
(6) Set FOCUS-SWCM LD BIAS CURRENT switch to LD PULSED.
(7) Set FOCUS-SWCM SWITCHED ATTN switch to OUT.
f. Monitor
lightwave multimeter and
adjust FOCUS-SWCM VAR ATTN 1 control for
-27 0.2 dBm optical power output.
NOTE
When calibrating TD-285C optical module, adjust FOCUS-LWCM
VAR ATTN 1 for -38 0.2 dBm at 1310 nm and 1550 nm.
g. Carefully remove optical fiber jumper cable connector from lightwave multimeter
and connect to fiber connector of TD-260C optical module (located on right-hand side under
h. Set digital delay/pulse generator controls to
settings as
indicated in
(1) through (13)
below:
NOTE
Digital delay/pulse generator softkeys have more than one
function depending on mode of operation.
(1) Press MENU TRIG pushbutton to cycle through steps (2) through (5) below.
(2) TRIG to EXT.
(3) THRESHOLDS to +0.50V.
(4) SLOPE (+/-) to +.
(5) TRIGGER TERM to 50 OHM.
(6) Press MENU OUTPUT to cycle through steps (7) through (11) below.
(7) OUTPUT to AB.
(8) AB & -AB LOADS to 50 OHM.
(9) AB: to VAR.
(10) AB: AMPLITUDE to +2.00V.
(11) AB: OFFSET to -1.60V.
(12) Press MENU DELAY pushbutton to set A Delay to A = T + 0.000010000000
(10 sec).
40