HP 8167A, User Manual, Page: 69 / 262

4
Some Notes about Programming and Syntax Diagram
Conventions
A program message is a message containing commands or queries that you send
to the tunable laser source . The following are a few points about program
messages:
Y ou can use either upper-case or lower-case characters .
Y ou can send several commands in a single message . Each command must be
separated from the next one by a semicolon (;).
Y ou end a program message with a line feed (LF) character , or any character
sent with End-Or-Identify (EOI).
Y ou can use any valid number/unit combination.
Example 1500nm, 1.5m and 1.5e-6m are all equivalent.
If you do not specify a unit, then the default unit is assumed. The default
unit for the commands are given with command description in the next
chapter .
Short F orm and Long F orm
The instrument accepts messages in short or long forms . F or example , the
message :STATUS:OPERATION:ENABLE 768 is in long form, the short form of this
message is :STAT:OPER:ENAB 768 .
In this manual the messages are written in a combination of upper and lower
case . Upper case characters are used for the short form of the message . F or
example , the above command would be written :STATus:OPERation:ENABle .
The rst colon can be left out for the rst command or query in your message .
That is , the example given above could also be sent as STAT:OPER:ENAB 768 .
Command and Query Syntax
All characters not between angled brackets must be sent exactly as shown.
The characters between angled brackets (< . . . >) indicate the kind of data that
you should send, or that you get in a response . Y ou do not type the angled
brackets in the actual message . Descriptions of these items follow the syntax
description. The most common of these are:
Remote Operation 4-5