Chapter 5
Test and Measurement Functions
CX300 Receive Functions
Rev. 001
CX300 ComXpert Operation Manual
22130634
5 - 22
February, 2022
Table 5-10 RF Receiver Controls and Settings
Parameter
Description
Port
The RF Receiver
Port
selects the input connector at which the
incoming signal is being received. This setting should be
selected according to the properties of the incoming signal and
the requirements of the test being performed.
RF Input
RF Input
should be selected for performing high sensitivity,
low power measurements. When
RF Input
is selected, the
RF Receiver’s pre-amplifier is available (see
description
).
RF Duplex
RF Duplex
port should be selected for receiving high power
signals. If the input power exceeds the input rating of the RF
Duplex connector, an external attenuator or adapter can be
used to adjust the input level. When an external attenuator is
used, the RF Receiver
Attenuation
field is used to adjust for
the use of the external attenuator.
Receiver
Frequency
The RF Receiver
Frequency
should be set to the match the
frequency being transmitted by the radio.
Reference Level
Reference Level
defines the signal level in relation to the RF
Input of the incoming signal; the field should be set higher than
the expected power level of the incoming signal.
Level Offset
The
Level Offset
accounts for a loss or gain in the RF path
between the CX300’s RF Receiver input connector and the Unit
Under Test. The
Level Offset
field defines the value that is
applied to the RF Receiver’s reference level.
•
The offset value is indicated in +dB for positive (gain)
values.
•
The offset value is indicated in -dB for negative (loss)
values.
Intermediate
Frequency (IF)
Bandwidth (BW)
IF BW
(IF Bandwidth) selects the IF detection bandwidth. A
lower bandwidth reduces the interference caused by powerful
narrow band transmitters, therefore, select the IF bandwidth
appropriate for the characteristics of the incoming signal.