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Agilent Technologies N5183A MXG User Manual

Page 109

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Agilent N518xA, E8663B, E44x8C, and E82x7D Signal Generators Programming Guide

99

Programming Examples

GPIB Programming Interface Examples

GPIB Address Assignments

Figure 3- 1

describes how GPIB addresses should be assigned for sending pass- thru commands. These

are the same addresses used in

Example 3- 1

.

Example Pass-Thru Program

Example 3- 1 on page 99

is a sample Agilent BASIC program that switches the 8757D to pass- thru

mode, allowing you to send operating commands to the PSG. After the program runs, control is given
back to the network analyzer. The following describes the command lines used in the program.

Line 30

PT is set to equal the source address. C1 is added, but not needed, to specify the
channel.

Lines 40, 90

The END statement is required to complete the language transition.

Lines 50, 100

A WAIT statement is recommended after a language change to allow all instrument
changes to be completed before the next command.

Lines 70, 80

This is added to ensure that the instrument has completed all operations before
switching languages. Lines 70 and 80 can only be used when the signal generator
is in single sweep mode.

Line 110

This takes the network analyzer out of pass- thru command mode, and puts it back
in control. Any analyzer command can now be entered.

NOTE

Verify the signal generator is in single sweep mode. Refer to the SCPI Reference or the
User’s Guide, as required.

Example 3-1

Pass-Thru Program

10 ABORT 7

20 CLEAR 716

30 OUTPUT 716;"PT19;C1"

Table 3-1

Instrument

GPIB
Address

Key Presses/Description

PSG/E8663B

19

Press

Utility > GPIB/RS-232 LAN > GPIB Address > 19 > Enter.

8757D

16

Press

LOCAL > 8757 > 16 > Enter.

8757D (Sweeper)

19

This address must match the PSG.
Press

LOCAL > SWEEPER > 19 > Enter.

Pass Thru

17

The pass thru address is automatically selected by the 8757D by inverting
the last bit of the 8757D address. Refer to the 8757D documentation for
more information. Verify that no other instrument is using this address
on the GPIB bus.

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