Tektronix 684A, 744A, 784A Check Probe Compensator Output

Performance Tests
4–60 TDS 684A, TDS 744A, & TDS 784A Service Manual
HPress the main-menu button Source.
HPress the side-menu button Ch3.
HSet vertical SCALE to 100 mV.
HPress SET LEVEL TO 50%.
HPress MEASURE; then press the main-menu button Select
Measrmnt for Ch2.
HRepeatedly press the side-menu button –more– until Pk-Pk appears
in the side menu (its icon is shown at the left). Press the side-menu
button Pk-Pk.
HPress CLEAR MENU.
b. Check against limits:
HCHECK that the readout Ch2 Pk-Pk is between 80 mV and 120 mV,
inclusive, for the TDS 684A or is between 88 mV and 132 mV,
inclusive, for the TDS 7XXA.
HEnter voltage on test record.
HPress VERTICAL MENU; then press the side-menu button  to
toggle to the 50 W setting.
HPress CLEAR MENU.
HCHECK that the readout Ch2 Pk-Pk is between 40 mV and 60 mV,
inclusive, for the TDS 684A or is between 44 mV and 66 mV,
inclusive, for the TDS 7XXA.
HEnter voltage on test record.
4. Disconnect the hookup: Disconnect the cables from the channel inputs and
the rear panel outputs.
Equipment
Required One female BNC to clip adapter (Item 3)
Two dual-banana connectors (Item 6)
One BNC T connector (Item 7)
Two 50  precision cables (Item 5)
One DC calibration generator (Item 9)
Prerequisites See page 4–15. Also, the Digitizing Oscilloscope must have passed
Check Accuracy For Long-Term Sample Rate, Delay Time, and Delta
Time Measurements on page 4–42.
Check Probe
Compensator Output