Agilent Technologies 46A, 45A, 54835A manual To test offset accuracy

Chapter 3: Testing Performance

To test offset accuracy

8Set the supply voltage to 2.00 V as in the first row of the table. Use the DVM to verify the setting.

9Re-adjust the vertical position, if necessary, so the trace is as close to the horizontal center line of the grid as possible after it has settled (averaging complete).

10Read the position voltage. It should be equal to the DVM reading, within the limits given in the table. Record the reading in the Performance Test Record.

To find the current position setting, select Channel 1 from the Setup menu and read the Offset field. Click Close when finished.

11Repeat steps 6 through 10 for the other lines in the table.

12With the channel keys, set the active channel OFF and the next ON.

13Move the BNC from one channel to the next.

14Repeat steps 6 through 13 for each channel, setting the parameters of the channel being tested where appropriate.

If the test fails

Offset errors can be caused by the need for self-calibration. Perform self-calibration (see chapter 4, “Calibrating and Adjusting”) before troubleshooting the instrument.

3–12