Tektronix CSA7404B - Figure 4- 12: Measurement of Offset Accuracy

Performance Tests
4-72
CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual
Turn on the
measurement called
mean and read the
results here.
Figure 4- 12: Measurement of offset accuracy
f. Check against limits:
H CHECK that the readout for the measurement Mean readout on
screen is within the limits listed for the current vertical scale and
position/offset/generator settings. Enter the value on the test record.
H Repeat substep d, using the zero offset and generator settings as is
listed in the table.
H CHECK that the Mean measurement readout on screen is within the
limits listed for the current vertical scale setting and position/offset/
generator settings. Enter the value on the test record.
H Repeat substep d, using the negative-polarity offset and generator
settings as is listed in the table.
H CHECK that the Mean measurement readout on screen is within the
limits listed for the current vertical scale setting and position/offset/
generator settings. Enter the value on the test record.
H Repeat substeps c through f until all vertical scale settings, listed in
Table 4--5, are checked for the channel under test.
g. Test all channels: Repeat substeps a through f for all four channels.
3. Disconnect the hookup:
a. Set the generator output to 0 V.
b. Disconnect the cable and adapter from the generator output and the input
connector of the channel last tested.