Remote Control Fundamentals
NRP2
180
User Manual 1173.9140.02 ─ 07
Some of the SCPI rules for query responses are stricter than those of the IEEE 488.2
standard:
●
The required value is sent without header.
Example:
SENSe:AVERage:TCONTrol?
Response:
MOV
●
Maximum and minimum values as well as all other quantities queried by a special
text parameter are returned as numeric values
Example:
SENSe:POWer:TSLot:COUNt? MAXimum
Response:
26
●
Numeric values are output without a unit. Physical quantities refer to the basic units
or to the units set with the UNIT command.
Example:
SENSe3:FREQuency?
Response:
1.000000E06
(for 1 MHz)
●
Boolean values are returned as 0 (for OFF) and 1 (for ON).
Example:
SYSTem:BEEPer:STATe?
Response:
1
●
Character data is returned in short form (
Example:
UNIT2:POWer?
Response:
DBM
5.7.5 Parameters
Most commands require the specification of a parameter. Parameters must be separa-
ted from the header by a white space. Parameters may be specified as numeric val-
ues, Boolean parameters, character data, strings or block data. The type of parameter
required for the specific command as well as the permissible value range are descri-
bed together with the commands.
Numeric values
Numeric values may be entered in any customary form, i.e. with sign, decimal point
and exponent. If the values exceed the resolution of the device, they will be rounded
off. Values between -9.9E37 and +9.9E37 can be entered. The exponent is denoted by
"E" or "e". The exponent alone must not be used.
Units
Physical quantities may be stated with the unit. Permissible prefixes for the unit are
G
(Giga),
MA
(Mega,
MHZ
is also allowed),
K
(kilo),
M
(milli),
U
(micro) and
N
(nano). If no
unit is specified, the basic unit will be used.
Structure and Syntax of device-dependent Messages
北京海洋兴业科技股份有限公司（证券代码：839145）
电话：010-62176775
网址：www.hyxyyq.com
