Performance Tests
CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual
4- 109
Check output
Figure 4- 30: Measurement of trigger out limits
3. Confirm SIGNAL OUT is within limits for gain:
a. Measure gain:
H Move the precision 50 Ω cable from the AUX OUT BNC to the
SIGNAL OUT BNC.
H Set Vertical SCALE to 50 mV.
H Press PUSH TO SET 50%.
H From the button bar, touch MEAS and select the Ampl tab.
H Touch the Pk-Pk button.
H Touch Close.
b. Check against limits: CHECK that the readout CH 2 Pk-Pk is between
40 mV and 60 mV, inclusive.
4. Confirm SIGNAL OUT is within limits for offset:
H Disconnect the cable from the CH 3 input.
H From the button bar, touch MEAS and select the Ampl tab.
H Touch the Low button.
H Touch Close.
a. Check against limits: CHECK that the Low reading is between --100 mV
and --170 mV, inclusive.
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