Giga-tronics 8650B Series, Руководство по эксплуатации

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Series 8650B Universal Power Meters
3-68 Publication 31470-001, Rev C, November 2, 2017
10.0 Specifies that the high end of the analog output range is 10 volts.
In the above example, the numeric variables are strung together with separator characters between them (See
Separators
, Section 3.3.1.5 below). However, in some commands, numeric variables are preceded in the
command string by the variable name. For example, in the command FBUF PRE TTL BUFFER 200 TIME 1300, the
numeric variables known as buffer and time are identified by name within the string.
Many variables are qualitative rather than quantitative; they select from among the various modes or options
available for a particular function.
3.3.1.4 Suffixes
Some commands require a terminating suffix. For example, the function code DY specifies a duty cycle. It
requires an AE or BE prefix to identify the sensor, and a numeric variable to indicate the duty cycle as a
percentage. Finally, the command must include a terminating suffix (the choices of suffix in this case are EN, PCT
and %). The command AE DY 50 % sets the duty cycle for sensor A to 50 percent.
NOTE:
Some commands that include numeric variables require a terminating suffix while other
commands do not, and interface problems will occur if the suffixes are used in commands which do not
need them. Each command must be used so that its particular syntax requirements are met.
3.3.1.5 Separators
Spaces, commas, colons, and semicolons can be used as separators between the various elements of a
command (function codes, variables, etc.). For readability, commands in this manual are usually spelled out with
spaces inserted between the elements (for example, SWIFT PRE GET BUFFER 100). Although separators within a
command are permitted, they are usually not required. In the command descriptions in this chapter (beginning
with Section 3.4), required separators are noted.
3.3.1.6 Command Format Illustrations
A command format is used in this manual to show the possible elements of a command, as illustrated below:
[AE or BE] DY [ n ] [EN or PCT or %]
Variables are shown within brackets. In this example, the prefix can be AE or BE, the function is DY, a numerical
variable [
n
] follows the function, and the suffix at the end can be EN, PCT, or %.
Possible commands which use this example format include AE DY 42 % and BE DY 29.5 EN.
Because the Model 8651B supports only one sensor, the AE and BE prefixes can be omitted from any command
issued to that model.