TB 9-6625-2309-24
NOTE
Optical fiber connectors used with this equipment have high
precision optical surfaces which mate two optical fibers
accurately. It is good practice to periodically clean the ceramic
ferrule (ends of optical fiber jumper cable) with reagent grade
alcohol on an optical grade lintless tissue. Dry connector end
with a dry (optical grade) lintless tissue. Connector should be
carefully handled to avoid contamination or damage when
unprotected by its dust cap. Replace connector dust cap when
optical fiber jumper cable is not connected to equipment. Small
amounts of dirt, dust, oil or other foreign matter on connector
ferrules can cause abnormal attenuation or damage to the
connector. Do not touch connector ferrule with unwashed
hands as this deposits oil which acts as a sticky surface to
attract dust, etc.
NOTE
Both FC-PC and ST connectors are keyed. Key on connector
must be aligned with key slot on connector receptacle.
d. Perform (1) through (4) below:
(1) Set FOCUS-SWCM POWER OFF ON key control switch to ON.
(2) Press digital delay/pulse generator POWER ON-OFF pushbutton to ON.
(3) Press lightwave multimeter power pushbutton to ON.
(4) Allow 15 minutes for test equipment to warm-up and stabilize.
e. Set lightwave multimeter to measure optical power in dBm at 850 nm wavelength.
f. Perform (1) through (2) below:
(1) Set FOCUS-SWCM LD BIAS CURRENT switch to LD PULSED.
(2) Set FOCUS-SWCM SWITCHED ATTN switch to OUT.
g. 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.
h. 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
black rubber dust boot), Connection B (fig. 3).
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