TB 9-6625-2309-35
k. Press PULSE WIDTH pushbutton to select SHORT.
l. While pressing N/LASER pushbutton, adjust CURSOR A control to set INDEX: to
1.4990 on TI display.
NOTE
If FOCUS-SWCM optical subassembly (PIN 202-60015-01),
FOCUS-LWCM optical subassembly (PIN 202-60015-02), or
DG535, digital delay/pulse generator have been replaced or
8. Horizontal
Scale Error
a. Performance Check
(1) Press DISPLAY FROM pushbutton to select ORIGIN.
NOTE
Softkeys have more than one function depending on mode of
operation.
(2) Perform (a) through (h) below:
(a) Press HELP pushbutton.
(b) Press MORE softkey.
(c) Press INSTRUMENT SETUP softkey.
(d) Press OTDR SETUP softkey.
(e) Press FIBER LEN/RES softkey.
(f) Adjust CURSOR A control to display NEW LENGTH & RESOLUTION
values to match LEN/RES values on TD-260C (850 nm) Horizontal Scale Data Sheet (first
cluster) (appendix A).
(g) Press ACCEPT CHANGES softkey.
(h) Press RETURN TO OTDR MODE softkey.
(3) Press DELAY pushbutton as necessary to set digital delay/pulse generator for
A=T+0.000010000000 (10 sec).