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88 Chapter 3 Administrative Tasks

4. Choose the CalFactor item by pressing the adjacent soft key. The following items

appear on the generator’s display:

5. Choose the Self-Calibrate item by pressing the adjacent soft key.

During calibration, calibration factors and other information appear on the generator’s

display. Observe the generator’s display for error messages. If an error message

appears, make a note of it and call your technical support representative for further

assistance.

To self-calibrate the generator using the command line interface:

1. Establish a session with the generator using either HyperTerminal over a serial

connection or Telnet over an Ethernet LAN. See “

Establishing a terminal session with

the generator” on page 31 or “Establishing a Telnet session with the generator” on page

34.

2. At the prompt, enter the following command:

SCAL

The generator begins the calibration procedure.

To view analog calibration factors:

Enter the following command to view the analog video red, green, blue calibration factors:

CALF?

The generator presents the following in response:

1089, 2589, 1993, 3223, 1148, 2633, 2059, 3279, 1000, 2505, 1990, 3219,

793, 787, 3382, 3509

For an explanation of the calibration factors, see the

CALF

? command in the Appendix A,

“Command Reference.”

Calibrating frequency

All frequencies associated with the generator are derived from a common frequency

reference, which can be calibrated using the rate calibration command

RATC

To calibrate all frequencies:

1. Load a standard format and set the horizontal rate to 100 kHz.

For example, enter the following command:

FMTL DMT0660

Edit-Factors

Self-Calibrate

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Quantum-data 881 Manual do Utilizador Página 106