Agilent Technologies E8285A manual Drop Timer, This field turns the call drop timer on or off

Chapter 4, Description of Fields

Fields

Drop Timer

This field turns the call drop timer on or off.

•On – the call drop timer is activated. If, during a call, the Test Set does not receive a signal from the MSUT for a period of 256 frames, the call is dropped.

•Off – the call drop timer is de-activated.

GPIB Example

“DISP CTXR;CDMA:CALL:DTIMER ‘OFF’”“

turns off the call drop timer.

Operating Considerations

When a call is connected and the Test Set fails to decode a traffic frame, the Test Set begins a counter that will increment with each bad frame. This counter is referred to as the “call drop” timer. When the Call Drop field is On, the call drop timer allows 256 bad frames in sequence before dropping the call. If you want to disable the Test Set’s call drop timer, set this field to Off.

With the Call Drop timer off and a call connected, the Test Set will continue to transmit the CDMA forward channel even in the absence of a reverse link. For example, if a mobile station has been power-controlled to a level that is too low for the Test Set to decode (and therefore acknowledge) signaling messages, the mobile station could drop the call but the Connected annunciator will still be lit.

With the Call Drop timer off, the Connected annunciator can still go out:

•if a procedure that requires signaling, such as Hard Handoff, was initiated but could not be completed, or

•if the End Release key is pressed, or

•if the CDMA:CALL:END command is sent via GPIB, or

•if the mobile station sends a Release Order message and the Test Set is able to decode it.

Screens Where Field is Present

CDMA TRANSMITTER POWER RANGE TEST

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