Functional verification, Command coupling – Agilent Technologies 75000 Series C User Manual

Page 20

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Command Coupling

Many of the AFG SCPI commands are value-coupled. In order to prevent
"Settings Conflict" errors, coupled commands must be sent contiguously by
placing them in the same program line, or by suppressing the end-of-line
terminator. (For more information on command coupling and syntax, see
Chapter 1 of the Agilent E1445A User’s Manual). In HP BASIC, the
end-of-line terminator can be suppressed by linking the commands with a
semi-colon (;) and a colon (:), as illustrated below:

ROSC:SOUR INT1;
:TRIG:SOUR INT1

In the Example programs, these commands would appear as follows:

OUTPUT 70910;"ROSC:SOUR:INT1;";
OUTPUT 70910;":TRIG:SOUR:INT1"

Functional
Verification

The purpose of these tests is to verify that the AFG is functioning properly
and that all front panel inputs and outputs are working. No attempt is made
to verify that the AFG is meeting specifications. Functional Verification for
the AFG includes the following tests:

Self-Test

Ref In/Marker Out Test

Start Arm In Test

Gate In Test

Output Relay Test

NOTE

For a quick functional check of the AFG, perform only the Self-Test.

An example program that performs all of the Functional Verification tests is
included at the end of this section. An Agilent E1405/E1406 Command
Module is required for this program.

NOTE

Some of the tests use the "TRIG OUT" port of the Command Module. This
port uses negative logic, i.e., the high voltage is a logical 0 and the low
voltage is a logical 1.

18 Verification Tests

Agilent E1445A Service Manual

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