The configurable test set provides access to the signal paths between internal source, recievers, bridge, and the test ports. This helps to improve instrument sensitivity as well as the the ability to add components or peripherals for a variety of applications.
When you remove a RCVR A or B IN front-panel jumper, the following items should be considered.
Set Source Port IF Ranging Mode at Normal
You can add the external booster amplifiers for increasing the power level to drive DUT (beyond +20 dBm). In order to overcome the drift effect of a booster amplifier, the external couplers are used as shown in the following figure. See the application note ( http://literature.cdn.keysight.com/litweb/pdf/5990-8002EN.pdf) for more information.
The simplest method to improve dynamic range is to remove a RCVR A or B IN front-panel jumper and route the DUT output directly into the receiver. This bypasses the directional coupler and limits the ability to provide Full Error Correction because the signal can not be applied in the reverse direction.
Another method to improve dynamic range is to reverse the signal path in the test-port coupler and bypass the loss typically associated with the coupled arm.
As shown in the following graphic, the signal is applied to Port 2. The signal bypasses the coupled arm via the jumper cable connected to the CPLR TRU and the RCVR B IN ports.
