TB 9-6625-2309-24
a. Position TI ON-OFF switch to OFF. If TD-260C optical module is not presently
installed in TI optical module compartment, remove existing optical module and
install TD-260C optical module.
NOTE
If software level 1.08a is installed, ZERO-KM SETTING may
be set to other than 0 nanoseconds.
Perform steps in
SECTION IV, paragraph 11 c, record present value of ZERO-
KM SETTING, then change ZERO-KM SETTING to 0. Restore
recorded values of ZERO-KM SETTING after performing steps
in b below.
NOTE
On cold power up TI will sometimes lock on wrong sync pulse during
self-zeroing. Steps in b below should be performed to check for slope on
leading edge of dead zone pulse. Slope must be present for proper
operation of horizontal scale measurements.
b. Perform steps (1) through (5) below:
(1) Perform steps (a) through (c) below:
(a) Set TI ON-OFF switch to ON and allow TI 5 minutes to warm up and stabilize.
(b) Set TI ON-OFF switch to OFF.
(c) Set TI ON-OFF switch to ON.
NOTE
TI has a screen saver feature which causes display to be turned
off after a short period if no entries are made to front panel.
Press any pushbutton to restore screen.
(2) After TI does self-test and displays Press Any Main Panel Key to Begin,
press any front panel pushbutton.
(3) Press FAST SCAN pushbutton.
Wait for LASER ON/AVG on display
indication to go off.
(4) Press HOR EXP pushbutton as necessary to view slope on leading edge of dead zone
pulse. Slope must be present and in approximate position shown in figure 1.
5
