Operating Manual EMI TEST RECEIVER ESIB7 - Rohde & Schwarz

ESIB
Receiver - Level Display/RF Input
0 DB MIN
ON OFF
The 0 DB MIN softkey determines whether the 0 dB setting of the attenuator
may be used in the manual or automatic setting of the attenuator.
0 DB MIN OFF is the default value, ie an RF attenuation of at least 10 dB is
always set on ESIB to protect the input mixer.
An attenuation factor of 0 dB cannot be set manually either. This prevents
0 dB being switched on inadvertently particularly when DUTs with high RFI
voltage are measured.
Caution:
If 0 dB RF attenuation is used with autoranging, care must be
taken that the permissible signal level at the RF input is not
exceeded. Exceeding this level would damage the input
mixer. The 0 dB attenuation should under no circumstances
be used when RFI voltage measurements are performed with
the aid of artificial networks as in this case very high pulses
occur during phase switching.
IEC/IEEE bus command
:INPut:ATTenuation:PROTection ON|OFF
AUTO RANGE
ON OFF
The AUTO RANGE ON/OFF softkey switches auto ranging on or off.
When the autorange function is active, ESIB automatically sets the selected
attenuation so that a good S/N ratio is obtained without the receiver stages
being overdriven.
IEC/IEEE bus command :INPut:ATTenuation:AUTO ON | OFF
AUTOPREAMP
ON OFF
The AUTOPREAMP ON/OFF softkey switches the autopreamp function on or
off.
When the autopreamp function is active, the preamplifier is considered in the
autorange procedure. The preamplifier is only switched on when the RF
attenuation is reduced to the lowest settable value.
This function can only be controlled when the preamplifier is switched on.
IEC/IEEE bus command :INPut:GAIN:AUTO ON | OFF
PREAMP
ON OFF
The PREAMP ON/OFF softkey switches the preamplifier on and off.
IEC/IEEE bus command :INPut:GAIN:STATe ON | OFF
1088.7531.12 4.117 E-15