Configuring the TDSO Supplemental Channel Information

Last updated: November 1, 2004

The forward and reverse supplemental channels (F-SCH and R-SCH) are used for high speed data transfer in IS-2000 system. The test set supports the supplemental channels when the service option ( Service Option ) is set to the test data service option (TDSO): SO32 (+F-SCH) or SO32 (+ SCH) in Radio Config (Fwd3, Rvs3) or Radio Config (Fwd4, Rvs3).

When a call is connected with SO 32 (+ F-SCH) service option, only F-SCH channel is established.
When a call is connected with SO 32 (+ SCH) service option, both F-SCH and R-SCH channels will be established.

NOTE

For lab application, the supplemental channels are also available for packet data service. See Packet Data Service Configurations .

The test set allows you to set the TDSO supplemental channel parameters regardless of the service option currently selected. However, the supplemental channel parameters are not applied until the supplemental channels are available. The F-SCH information and/or R-SCH information you've set are displayed on the TDSO Supplemental Channel Information screen when they are applied.

Almost all of the parameters associated with the F-SCH and R-SCH channels are accessed from the TDSO supplemental channel information menus (see How Do I Change TDSO Supplemental Channel Information? ) or using the CALL:SCHannel commands. To set the F-SCH power level, see How Do I Change Generator Information? .

TDSO F-SCH and R-SCH Parameters
Channels	Parameters	(Fwd3, Rvs3)		(Fwd4, Rvs3)
		SO32 (+ F-SCH)	SO32 (+ SCH)	SO32 (+ F-SCH)	SO32 (+ SCH)
F-SCH	Data Rate	CALL:SCHannel[:FORWard]:DRATe:RCONfig3		CALL:SCHannel[:FORWard]:DRATe:RCONfig4
	Encoder Type	CALL:SCHannel[:FORWard]:ENCoder		CALL:SCHannel[:FORWard]:ENCoder
	Data Source	CALL:SCHannel:TDSOption:DSOurce		CALL:SCHannel:TDSOption:DSOurce
	Fixed Pattern	CALL:SCHannel:TDSOption:FPATtern		CALL:SCHannel:TDSOption:FPATtern
R-SCH	Data Rate	N/A	CALL:SCHannel:REVerse:DRATe:RCONfig3	N/A	CALL:SCHannel[:FORWard]:DRATe:RCONfig4
	Encoder Type		CALL:SCHannel:REVerse:ENCoder		CALL:SCHannel:REVerse:ENCoder
	Service Configuration Max Rate		CALL:SCHannel:REVerse:DRATe:MAXimum		CALL:SCHannel:REVerse:DRATe:MAXimum
NOTE: The F-SCH Walsh code is fixed at code channel number 3. To set the reverse link gain traffic to pilot for R-SCH, see RL Traffic to Pilot Gain (RLGAIN_TRAFFIC_PILOT) on Setting Cell Parameters .

IMPORTANT

The F-SCH Parameters menu allows for the selection of PRBS or Fixed Pattern data source. This choice is also applied to the reverse supplemental channel. PRBS data is required and is the only data source supported if you are making any of the code domain measurements on the reverse supplemental channel. If PRBS data is not selected, the code domain power results (see Waveform Quality/Code Domain Measurement Description ) will not display distinct code channels with the expected spreading factors.

Configuring the TDSO Supplemental Channel Information

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