Last updated: 2014-11-28
UL CL Power Ctrl Mode controls what power control bit pattern is sent to the UE. It can be set to the following:
Active Bits - the test set sends the power control bits required to maintain the UE's DPCH power at UE Target Power. This is the default value if the Operating Mode is Active Cell.
Alternating bits - the test set sends alternating power-up and power-down bits to the UE. This is the default value if the Operating Mode is TD-SCDMA Test.
All Up bits - the test set sends a continuous pattern of power-up bits. This is often used to drive the UE to transmit at its maximum power level. Note, the test set will continuously send up bits to the UE in this mode, even if the UE exceeds the test set's specified measurement limit of +28 dBm.
All Down bits - the test set sends a continuous pattern of power-down bits. This is often used to drive the UE to transmit at its minimum power level.
GPIB Command: CALL[:CELL]:CLPControl:UPLink:MODE (for Active Cell operating mode) or CALL:TDTest:CLPControl:UPLink:MODE (for TD-SCDMA Test operating mode)
You can specify the size of the change in UE power for each closed loop power control TPC_cmd.
To change the power control step size while on a connection, you must perform a Physical Channel Reconfiguration. After completion of the Physical Channel Reconfiguration procedure, successful or not, the UL CL Power Ctrl Step Size setting is overwritten with the value of PCR UL CL Power Ctrl Step Size.
GPIB Command: CALL[:CELL]:CLPControl:UPLink:STEPsize
Send Step Up TPC Bit Pattern and Send Step Down TPC Bit Pattern can send individual transmit power control (TPC) commands to change the UE's power up or down by 1 dB. These functions can only be used when UL CL Power Control Mode is set to Alternating bits.
GPIB Command: CALL[:CELL]:CLPControl:UPLink:IMMediate:DOWN and CALL[:CELL]:CLPControl:UPLink:IMMediate:UP