Diagram Conventions

Diagram Conventions

Last updated: June 21, 2006

Description

Diagram Description

Mnemonics are connected by lines. Each line can be followed in only one direction, as indicated by the arrow at the end of the line. Any combination of mnemonics that can be generated by starting at the root mnemonic and following the line in the direction of the arrow is syntactically correct.

The uppercase letters of a mnemonic represent the short form of the mnemonic, whereas the long form of a mnemonic is the short form followed by the lowercase letters. The test set accepts either the long form or the short form of the mnemonic. The mnemonics that are inside square brackets are optional. That is, a command operates the same whether or not the mnemonic in square brackets is used in the command.

The drawings show the proper use of spaces. Where spaces are required they are indicated by <sp>, otherwise no spaces are allowed between mnemonics.

Complex Command Description

Complex commands are valuable because they set the state of the parameter and a value for that parameter. For example, the command in the above figure that contains the mnemonic [:SAMPlitude] is a complex command because sets the state to ON as well as the amplitude. You can use parameters such as amplitude, frequency, gain, number, time, and value as a complex command. Refer to the specific command for the parameter that applies.

Data Type Description

num value

Integer, float or scientific values.

For example,

 
CALL:POWer -55.5
 
CALL:POWer -5.55E+001
 
CALL:CHANnel 525

string

Characters. The string will often need to be enclosed in single or double quotes, depending upon your programming environment.

For example,

 
CALL:CIDentity "#0123456789*"
 
CALL:UPLink:PRAChannel:ASUBchannels '111111111111'

The string returned by the test set is enclosed by double quotes.
choice1|choice2|choice3

Specific character choices.

For example,

 
CALL:OPERating:MODE D2KTest
 
SYSTem:COMMunicate:GPIB:DEBug ON

Unit Type Description

Some commands have optional units of measurement. These are displayed in square brackets. If no units are specified in the command then the default unit in bold font is used. The test set accepts the specified unit either with or without a space inserted between the <num value> and the unit (for example, both 10S and 10 S are valid). The following table summarizes the units available.

Description

Optional Units

Example

Amplitude (linear)

V |MV

To set the spectrum monitor's timeout interval to 20 seconds, use any of the following formats:

 
SETup:SMONitor:TIMeout:TIME 20
SETup:SMONitor:TIMeout:TIME 20S
SETup:SMONitor:TIMeout:TIME 20 S

Power (logarithmic)

DBM |DBW

Level (relative)

DB

Frequency

HZ |KHZ|MHZ|GHZ

Time

S |MS|US|NS

Percentage

PCT

[:SELected] Mnemonic

The [:SELected] Mnemonic is an optional mnemonic that implies a current selection on the test set. Often there are other mnemonics that can be used in place of the [:SELected] mnemonic to configure a setting that is not the currently selected configuration on the test set. The mnemonics that can replace the [:SELected] mnemonic are listed in parentheses separated by vertical bars ( | ) in the description table title. An example of a command that contains the [:SELected] mnemonic is shown in the following table.