TB 9-6625-2024-24
(2) Adjust calibration adapter TEST switch, VERT OR HORIZ GAIN, and REP
RATE control to 100 kHz.
(3) Set dual time base TIME/DIV OR DLY TIME switch to 0.1 Ps and press MAG
pushbutton to X1 (IN).
(4) Adjust calibration adapter and dual time base POSITION controls to align
bright trace on center vertical graticule line. If TI does not display 1 trace within r0.5
minor division of each vertical graticule line, perform b (1) below.
(5) Set calibration adapter TEST switch to VERT OR HORIZ COM MODE. If
trace is not aligned on center vertical line within r1 minor division, perform b (2) and (3) below.
b. Adjustments
(1) Adjust R509 (R512 for Tektronix 7603) (fig. 1) for display of 1 trace for each
vertical graticule line (R).
(2) Adjust R513 (R525 for Tektronix 7603) (fig. 1) to midrange and adjust R531
(R535 for Tektronix 7603) (fig. 1) until vertical trace is aligned on center horizontal
graticule line (R).
(3) Repeat a (2), (4), and (5) for best compromise.
12. Timing and Linearity
a. Performance Check
(1) Install calibration adapter in left vertical compartment.
(2) Install dual time base in horizontal (right) compartment.
(3) Set calibration adapter TEST switch to VERT OR HORIZ AUX IN.
(4) Connect oscilloscope calibrator SOURCE/MEASURE CHAN 1 to calibration
adapter AUX IN input.
(5) Set oscilloscope calibrator MARKER output for 1 ms.
(6) Set dual time base TIME/DIV OR DLY TIME switches to 1 ms.
(7) Adjust dual time base POSITION control until 2d marker is aligned with 2d
vertical graticule line. Rotate oscilloscope calibrator knob located below EDIT FIELD
err display readout does not indicate within r3% when using TD-1085/U or r2% when
using Tektronix 7B53A, 7B35AN, or TD-1159/U, adjust oscilloscope calibrator for 0 percent
on err display and adjust SWP CAL control (front panel) for 1 marker per division.
(8) Set oscilloscope calibrator MARKER output to 10 ns.
(9) Set dual time base TIME/DIV OR DLY TIME switches to .1 Ps.
(10) Adjust calibration adapter POSITION and AMPLITUDE controls to center
display on TI crt horizontal graticule centerline.
(11) Press and release dual time base MAG pushbutton to X10 (OUT) position.
