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S:\agilent\e8285\REFGUIDE\MANUAL\fields.chp
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