Keithley S46 Instruction Manual page 27

S46/S46T/S46L Microwave Switch System Instruction Manual
NOTE
Parameters provide specific types of information. The following list
definitions of the different parameter types.
Table 3-5
Parameter types
Parameter
<name>
<clist>
<b>
<NRf>
<n>
Short-form commands
Most SCPI command words and name parameters have a short-form version. The short-form
versions are identified in the SCPI tables by the upper case characters. Example:
:ROUT:CLOS (@1,7) = :ROUTe:CLOSe (@1,7)
NOTE
Query commands
Query commands request information (queries) and can be identified by the question mark
appearing after the command (?). Example:
:CLOSe?
Command messages
Program message: A program message is made up of one or more command words sent by the
computer to the instrument. Some programming operations require several command words.
Single command message: This program message uses the command words required to
perform a single programming operation. Example:
:SYST:ERR?
Multiple command message: This program message contains two or more command
operations. Each command string is separated by a semicolon (;). The following example uses the
short-form format to reduce the size of the message:
:ROUT:CLOS (@1,7);:ROUT:CLOS?
The above program message closes channels 1 and 7, and then queries for closed relays.
Document number: S46-901-01 Rev. F / March 2011
Each common command is preceded by a star (*).
Description
Name parameter: Select a parameter name from a listed group.
List of channels. The following examples demonstrate proper format:
(@1,7) channels 1 and 7.
Boolean: Enable (1 or on) or disable (0 or off) a function.
Numeric representation format: Number can be expressed as an
integer, real number, or an exponent (for example, 2.3E6).
Numeric value: An NRf number or one of the following name
parameters:
- DEFault: Uses the *RST default parameter value
- MINimum: Uses the lowest allowable parameter value
- MAXimum: Uses the largest allowable parameter value
Command words and parameter names are not case-sensitive.
Queries the channels that are closed.
Reads the system error queue.
Section 3: Operation
(Table 3-5) contains the
3-3