California Instruments 801RP Series User And Programming Manual

Also see for 801RP Series: Training manual

California Instruments 801RP Series User And Programming Manual Manual pdf 55 page image

User and Programming Manual - Rev P California Instruments12.4.5. Message Unit SeparatorWhen two or more message units are combined into a compound message, separate theunits with a semicolon (VOLT 100;FREQ 60).12.4.6. Root SpecifierWhen it precedes the first header of a message unit, the colon becomes the root specifier. Ittells the command parser that this is the root or the top node of the command tree. Note thedifference between root specifiers and header separators in the following examples:SOURce:VOLTage:LEVel 100 All colons are header separators:SOURce:VOLTage:LEVel 100 Only the first colon is a root specifierSOURce:VOLTage:LEVel 100;:FREQuency 55 Only the third colon is a root specifierYou do not have to precede root-level commands with a colon; there is an implied colon infront of every root-level command.12.4.7. Message TerminatorA terminator informs SCPI that it has reached the end of a message. The only permittedmessage terminator is:• newline (), which is ASCII decimal 10 or hex 0A.In the examples of this manual, there is an assumed message terminator at the end of eachmessage. If the terminator needs to be shown, it is indicated as regardless of theactual terminator character.12.5. SCPI Data FormatsAll data programmed to or returned from the AC source is in ASCII. The data type may benumerical or character string.12.5.1. Numerical Data FormatsSymbol Data FormTalking Formats Digits with an implied decimal point assumed at the right of the least-significant digit. Examples: 273 Digits with an explicit decimal point. Example:.0273 Digits with an explicit decimal point and an exponent. Example: 2.73E+2 Boolean Data. Example: 0 | 1Listening Formats Extended format that includes , and . Examples:273.2 , 2.73E2 Boolean Data. Example: 0 | 112.5.2. Character DataCharacter strings returned by query statements may take either of the following forms,depending on the length of the returned string:October 2005 RP Series48

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