Agilent Technologies E8285A manual RX/TX Cntl

Chapter 4, Description of Fields

Fields

Screens Where Field is Present

CALL CONTROL

RX/TX Cntl

This function controls automatic screen changes between the RX TEST and TX

TEST screens during radio testing. It is divided into two fields:

The Auto/Manual field enables/disables automatic switching between the RX

TEST and TX TEST screens under certain testing conditions.

•Auto allows automatic screen changes between the RX TEST and TX TEST screens while testing radios.

•Manual requires you to select the RX TEST or TX TEST screen when performing ra- dio tests.

The Carrier/PTT field specifies the condition that will cause automatic screen changes.

•Carrier causes the instrument to automatically switch from the RX TEST screen to the TX TEST screen when an RF carrier is detected. The screen returns to RX TEST when the carrier is no longer detected.

•PTT (Push-To-Talk) causes the instrument to automatically switch from the TX TEST screen to the RX TEST screen when a microphone connected to the MIC/ACC connec- tor is keyed. The screen changes back to TX TEST when the microphone is no longer keyed.

Operating Considerations

CAUTION:The Test Set can be damaged by connecting a reverse-power signal to the DUPLEX OUT port of >200 mW.

If Auto and Carrier are used together, the screen may continuously change between RX TEST and TX TEST. This only occurs if the RF IN/OUT port is used with the RF Generator Amplitude set ≥ 35 dBm (a much higher level than is typically used for receiver tests). To prevent this problem, set the Amplitude ≤35 dBm or Off, or use the DUPLEX OUT port for the RF Generator’s output.

Screens Where Field is Present

CONFIGURE

373