This section is only applicable to the lab application and to a test application with the required feature license.
ACK Channel Modulation Type
sets the type of the modulation used to transmit the reverse ACK (R-ACK) channel for subtype 2 physical layer. It is sent to the access terminal in the ACKChannelModulationTypeFixedMode attribute in the
FETAP Parameter Assignment Message
when the test set is configured to ETAP (see
Test Application Configuration
) and the
ACK Channel Bit Fixed Mode Attribute
is set to On.
ACK Channel Modulation Type
can be changed at any time.
The
ACK Channel Modulation Type
is displayed on the
Call Setup
screen in the
Application Configuration
window when the
Session Application Type
is set to
Test Application
, the
Release A Physical Layer Subtype
is set to Subtype 2 and the
ACK Channel Bit Fixed Mode Attribute
is set to On in the Active Cell operating mode.
When ACK Channel Bit Fixed Mode Attribute is Off, the AT uses the modulation for the R-ACK channel based on the type of the received packet (Single User or Multi-User). The C.S0024-A air interface standard specifies that the ACK channel modulation is fixed to the BPSK mode when acknowledging a Single User packet and fixed to the OOK mode when acknowledging a Multi-User packet. The test set only supports Single User packets in Test Application configuration, so the AT will always use the BPSK modulation for the R-ACK channel when ACK Channel Bit Fixed Mode Attribute is Off.
GPIB Command: CALL[:CELL]:APPLication:ACKChannel:MODulation
Manual Operation: How Do I Change Call Parameters? (Application Configuration menu)
Enhanced Test Application Protocol