Operating instructions

INPut Subsystem R&S ESCI
1166.6004.12 6.108 E-1
INPut Subsystem
The INPut subsystem controls the input characteristics of the RF inputs of the instrument. In receiver
mode, the suffix is irrelevant. In the analyzer mode, the measurement windows are assigned to INPut1
(screen A) and INPut2 (screen B).
COMMAND PARAMETERS UNIT COMMENT
INPut<1|2>
:ATTenuation
:AUTO
:PROTection
[:STATe]
:COUPling
:LISN
[:TYPE]
:PHASe
:PEARth
:UPORt
[:VALue?]
:STATe
:IMPedance
<numeric_value>
<Boolean>
<Boolean>
AC | DC
TWOPhase | FOURphase | OFF
L1 | L2 | L3 | N
GROunded | FLOating
--
<Boolean>
50 | 75
DB
--
--
--
--
OHM
nur Abfrage
:GAIN
:STATe
:AUTO
:PRESelection
[:STATe]
<Boolean>
<Boolean>
<Boolean>
INPut<1|2>:ATTenuation 0 ... 75dB
This command programs the input attenuator. To protect the input mixer against damage from
overloads, the setting 0 dB can be obtained by entering numerals, not by using the command DEC.
The step width is 5 dB, the range is 0 dB to..75 dB.
In the default state with analyzer mode, the attenuation set on the step attenuator is coupled to the
reference level of the instrument. If the attenuation is programmed directly, the coupling to the
reference level is switched off.
With receiver mode, if the attenuation is programmed directly, the auto range function is switched off
if necessary. Settings below 10 dB can be prevented by activating the protection function
(INPut:ATTenuation:PROTection ON).
Example: "INP:ATT 40dB" 'Sets the attenuation on the attenuator to 40 dB and
'switches off the coupling to the reference level.
Characteristics: *RST value: 10 dB (AUTO is set to ON)
SCPI: conforming
Mode: all