Tektronix 2246A Operator's Manual page 206

8. Gated Volts Accuracy
A SEC/DIV 0.5 ms
CH 2 VOLTS/DIV 10 mV
Press the VOLTMETER button and then select (TO GATED MEASMT
MENU) from the VOLTMETER menu. Select GATE +PEAK from the
GATED MEASMT menu,
Connect calibration generator (PG 506) Std Ampi output to the CH 2
Input via a 50 OQ precision BNC coaxial cable. Set the generator to Std
Ampi output, 50 mV.
Set the ~l control for minimum intensified zone width (counterclock-
wise rotation) .
CHECK—that the width of the dot is jess than 0.2 division,
Set the intensified dot to a positive peak of the displayed waveform,
using the © OR DELAY control.
CHECK—the readout is between 47.0 mV and 53.0 mV.
Set the intensified dot to a negative peak of the displayed waveform.
CHECK—the readout is 0.0 mV $0.5 mV,
Disconnect the test signal from the 2246A.
7-52 2246A Operators