Giga-tronics GT 9000, Руководство по эксплуатации и техническому обслуживанию

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2.4 GT 9000 Syntax
The GT 9000 can accept commands from a remote controller over the IEEE-488 interface. The
default GT 9000 syntax emulates the HP 8340. A separate syntax is available which emulates
the Giga-tronics 1026. If you select the 1026 syntax (using the GT command), you can recall
the default syntax later by sending the HP command.
The GT 9000 syntax is designed to make Model GT 9000 a compatible substitute for the
HP 8340 in most remote-control operations. However, differences between the GT 9000 and the
8340 require some alteration of the 8340 command set: new commands are added, some
existing commands differ slightly from their usual function when they are applied to Model
GT 9000, and some existing commands are unsupported. See the command descriptions in
Table 2-4 for the Giga-tronics implementation of these commands.
Commands in the GT 9000 syntax are represented in this manual by upper case letters. Some
commands are followed by one or more lower case letters. These letters are interpreted as
follows:
a Indicates that alphanumeric characters are expected.
b Indicates that one or more 8-bit bytes (entered in binary form) are expected.
d Indicates that a decimal number is expected. Decimal numbers can be signed.
Exponents may be indicated by an E; thus, +4.5E-6 represents 4.5
×
10
-6
.
h Indicates that a hexadecimal number is expected.
n Indicates that a single digit (0-9) is expected.
t Indicates that a terminator is expected. Usually, codes which specify units are used as
terminators. The codes are Hz (Hz), KZ (kHz), MZ (MHz), GZ (GHz), DB (dB), DM
(dBm), S (seconds), MS (ms), and US (
µ
s). Alternatively, a comma or line feed can
be used as a terminator; this causes the instrument to scale the corresponding function
to the fundamental units of Hz, dB, dBm, or seconds.
The absence of lower case letters in a command indicates that the command is complete as
shown, and requires no variables.
The commands of the GT 9000 syntax are described in Table 2-4. Commands which are
identical with existing HP 8340 commands are shown in bold print; all other commands are
either modified or invented for application to the Model GT 9000.
Operation
Manual No. 120AM00250, Rev C, September 1998
2-19