Rohde & Schwarz NRP18A, Руководство пользователя

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Remote Control Basics
R&S
®
NRPxxA(N)
140 User Manual 1177.6017.02 ─ 05
Units
For physical quantities, you can enter the unit. Only basic units are allowed and recog-
nized, see
Table 11-3 . If you omit the unit, the basic unit is used.
Table 11-3: Units
Noted default unit Corresponding basic unit
Frequency Hz
Seconds s
Watts W
Angle degrees
Percent PCT
DB dB
DBM dBm
DBUV dBuV
Special numeric values
The texts listed below are interpreted as special numeric values. For a query, the
numeric value is provided.
●
MIN/MAX
MINimum
and
MAXimum
denote the minimum and maximum value.
●
DEF
DEFault
denotes a preset value which has been stored in the non-variable mem-
ory. This value conforms to the default setting, as it is called by the *RST com-
mand.
●
UP/DOWN
UP
,
DOWN
increases or reduces the numeric value by one step. The step width can
be specified via an allocated step command for each parameter which can be set
via UP, DOWN.
●
INF/NINF
INFinity
,
Negative INFinity (NINF)
represent the numeric values 9.9E37
or -9.9E37, respectively.
INF
and
NINF
are only sent as instrument responses.
●
NAN
Not A Number (NAN) represents the value 9.91E37. NAN is only sent as an instru-
ment response. This value is not defined. Possible causes are the division by zero,
the subtraction of infinite from infinite and the representation of missing values.
Boolean Parameters
Boolean parameters represent two states. The "ON" state (logically true) is represen-
ted by "ON" or a numeric value 1. The "OFF" state (logically untrue) is represented by
"OFF" or the numeric value 0. The numeric values are provided as the response for a
query.
SCPI Command Structure