Performance Tests
4–14
TDS 340A, TDS 360 & TDS 380 Technical Reference
DC gain accuracy is verified by successful completion of the self tests and the
DC voltage measurement accuracy (in the previous procedure).
Offset accuracy is verified by successful completion of the self tests and the DC
voltage measurement accuracy (in the previous procedure).
Equipment Required: One leveled sine wave generator (Item 7 or 8), one 50 W
precision cable (Item 2), and one 50 W termination (Item 1).
Time Required: Approximately 20 minutes.
Prerequisites: See page 4–11.
Procedure:
1. Connect, through a 50 W precision cable and a 50 W termination, the sine
wave output of a leveled sine wave generator to CH 1 (see Figure 4–6). Set
the output of the generator to a reference frequency of 50 kHz.
NOTE. If you are verifying a TDS 380, you need a leveled sine wave generator
with a 400 MHz output frequency. Refer to Sine Wave Generator Leveling
Procedure on page 4–20 for information on obtaining a leveled output from an
unleveled sine wave generator.
Digitizing oscilloscope
50 W termination
Leveled
sine wave
generator
Output
Figure 4–6: Hookup for analog bandwidth check
1. Press SAVE/RECALL SETUP ! Recall Factory Setup ! OK Confirm
Factory Init.
2. Set the horizontal SCALE to 10 ms/div.
3. Press TRIGGER MENU ! Coupling ! Noise Rej.
4. Press ACQUIRE ! Mode ! Average 16.
DC Gain Accuracy
Offset Accuracy
Check Analog Bandwidth
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