Agilent Technologies 4294A Service Manual download pdf (Page 60)

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60 Chapter 4

Preparing For Accurate Measurement

User Calibration

volatile memory.

Lines 530 to 540 These lines indicate the message of completion and terminate the

program.

The following describes FNUser_cal, a data measurement subprogram for user calibration,

which is shown in lines 580 to 920.

Line 610 This line clears the status byte register.

Lines 620 to 630 These lines prompt for the connection of the standard for measurement

specified by Standard$ and wait for you to press the y key and the

return key.

Lines 650 to 660 These lines set the branch target for an SRQ interrupt to make the SRQ

interrupt effective.

Lines 670 to 740 These lines send the commands to execute the standard measurement

specified by Standard$.

Line 760 This line waits for the measurement to finish.

Lines 780 to 880 These lines check whether an error has occurred during measurement.

If no error occurred, then these lines indicate the message of

measurement completion and return 0 as the return value from the

subprogram. If an error occurred, then these lines indicate an error

message, execute the command that suspends data measurement, and

return -1 as the return value from the subprogram.

Lines 900 to 920 These lines are steps for any key other than the y key pressed in

response to line 630. These lines execute the command that suspends

date measurement and then return -1 as the return value from the

subprogram.

The following describes the subprogram Inp_data for entering the data shown in lines 980

to 1090.

Line 1000 This line returns to the start line of input if an error occurs due to an

invalid input or similar reason. This allows you to make entries again.

Lines 1020 to 1030 These lines prompt you to enter a data item specified by Mes$ and

wait for you to enter it.

Lines 1040 to 1060 These lines indicate the value entered and wait for you to press either

the y key or the n key to notify whether the input is correct or not.

Line 1070 This line returns to the start line of input if any key other than the y key

is pressed in response to line 1060.

1 2 ... 55 56 57 58 59 60 61 62 63 64 65 ... 517 518

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Agilent Technologies 4294A Service Manual Page 60

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