R&S ESU Series Operating Manual page 278

R&S ESU
NAME The NAME softkey enables the entry of characteristics in the table heading.
Name - Enter name
A maximum of 8 characters is permitted for each name. All names must be compat-
ible with the MS DOS conventions for file names. The instrument stores all limit lines
with the .LIM extension.
Remote command:
Domain - Select time or frequency domain
The default setting is frequency.
A change in domain (frequency/time) is only permitted when the data point table is
empty.
Remote command:
X-Axis - Select interpolation
Linear or logarithmic interpolation can be carried out between the frequency refer-
ence points of the table. The ENTER key toggles between LIN and LOG selection.
Remote command:
Scaling - selection of absolute or relative scaling
The limit line can either be scaled in absolute (frequency or time) or relative units. In
receiver mode, only absolute scaling is used. Any of the unit keys may be used to
toggle between ABSOLUTE and RELATIVE, the cursor must be positioned in the X-
Scaling or the Y-Scaling line.
X-Scaling ABSOLUTE
X-Scaling RELATIVE
Y-Scaling ABSOLUTE
Y-Scaling RELATIVE
The RELATIVE scaling is always suitable, if masks for bursts are to be defined in the
time domain, or if masks for modulated signals are required in the frequency
domain.
Operating Manual 1302.6163.12 - 03
CALC:LIM3:NAME "GSM1"
CALC:LIM3:CONT:DOM FREQ
CALC:LIM3:CONT:SPAC LIN
CALC:LIM3:UPP:SPAC LIN
CALC:LIM3:LOW:SPAC LIN
The frequencies or times are interpreted as absolute
physical units.
In the data point table, the frequencies are referred to the
currently set center frequency. In time domain mode, the
left boundary of the diagram constitutes the reference.
The limit values refer to absolute levels or voltages.
The limit values refer to the reference level (Ref Level) or,
in case a reference line is set, to the reference line.
Limit values with the unit dB are always relative values.
Instrument Functions
Basic Settings
4.247