Remote Control Fundamentals
NRP2
181User Manual 1173.9140.02 ─ 07
Example:
SENSe1:FREQuency
1.5 GHZ is equivalent to SENSe1:FREQuency 1.5E9
Some settings allow relative values to be stated in "One" and percent. According to
SCPI, these units are represented by the strings O or DPCT.
The unit DPCT designates the deviation of a measurand from 100%. A power ratio of
95% thus corresponds to -5Δ%.
Unit used in the R&S NRP2 SCPI notation
Watt
W
dBm
DBM
dBµV
DBUV
dB
DB
1 O
(as in One)
Δ%
DPCT
Hertz
HZ
Second
S
Special numeric values
The parameters MINimum, MAXimum, and DEFault are interpreted as special numeric
values. The numeric value is returned in response to a query.
Example:
Command: SENSe2:POWer:
APERture MAXimum
Query: SENSe2:POWer:APERture?
Response: 1.000000E02
MIN/MAX MINimum and MAXimum denote the minimum and maximum value.
DEF DEFault denotes a preset value. This value is identical to the basic setting called by the
*RST
command.
NAN Not A Number (NAN
) stands for 9.91E37. NAN is only sent as a device response. This
value is not defined. NAN is typically returned for dividing by zero, subtracting a value
from infinity and representing missing data.
Boolean parameters
Boolean parameters represent two states. The ON state (logical true) is represented by
ON or a numeric value other than 0. The OFF state (logical false) is represented by OFF
or the numeric value 0. Queries yield 0 or 1.
Structure and Syntax of device-dependent Messages
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