Brief Procedures
CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual
4-9
Channel buttons
Figure 4- 3: Channel button location
4. Select the channel to test: Push the channel button for the channel you are
currently testing. The button lights and the channel display comes on.
5. Set up the instrument:
H Push the front panel AUTOSET button. This sets the horizontal and
vertical scale and vertical offset for a usable display and sets the trigger
source to the channel you are testing.
H Pull down the Vert menu, select Vertical Setup, and then touch Offset.
Confirm that the Ch1 Offset is about --0.18 to --0.54 V, depending on the
probe used (0.0 V if not using a probe).
6. Verify that the channel is operational: Confirm that the following statements
are true.
H Verify that the vertical scale readout and the waveform amplitude for the
channel under test are as shown in Table 4--1.
Table 4- 1: Vertical settings
CSA7404B, TDS7404B, TDS7254B, TDS7154B, & TDS7704B
Setting
With P7240 or P7260
Without probe
Scale 200 mV 200 mV
Waveform amplitude 5.2 divisions --2.5 divisions
H The front-panel vertical POSITION knob (for the channel you are
testing) moves the signal up and down the screen when rotated.
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