Last updated: December 2, 2008
The majority of the test set's parameters are active regardless of the frequency band selected. There are a number of parameters that allow you to specify a band; DCS, EGSM, GSM450, GSM480, GSM750, GSM850, T-GSM810, PCS, PGSM or RGSM. These exceptions are called frequency banded parameters.
Frequency banded parameters are activated upon selection of a band. Parameters that select frequency bands include cell band and traffic band (see Band Selection Parameters ).
You can set parameter values for a band that is not currently selected, and the test set stores the settings for future use. For example, during a call on the PGSM band, the MS TX level can be set to 10 for the DCS frequency band. When a handover (see How the Test Set Performs a Dualband Handover ) to the DCS band is made, the MS TX level of 10 for DCS will already be set.
If you do not specify a frequency band when setting frequency banded parameters, settings to the parameter are made in the currently selected band.
The following table lists all the frequency banded parameters that apply to GSM. If you need more information on any of the parameters contained in this table, click the corresponding GPIB command link.
BA Table | CALL[:CELL]:BA:TABLe[:SELected] |
BA Table Points | CALL[:CELL]:BA:TABLe:POINts[:SELected]? |
Traffic Channel (ARFCN) | CALL:TCHannel[:ARFCn][:SELected] |
MS TX Level | CALL:MS:TXLevel[:SELected] |
TCH Timing Advance | CALL:MS:TADVance[:SELected] |
Control Channel Power | CALL[:CELL]:MS:TXLevel:CCHannel[:SELected] |
Traffic Channel MAIO | |
Traffic Channel Automatically Populated MA Table Values (Query) |
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Traffic Channel -Number of Automatic MA Table Values (Query) |
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This section provides an example of how to use frequency banded parameters.
The following procedure assumes that an active link is established between the test set and the mobile station. See Establishing an Active GSM Link with the Mobile Station .
10 OUTPUT 714;"CALL:TCH:PGSM 124" !Sets traffic channel to 124 for PGSM band. 20 OUTPUT 714;"CALL:MS:TXL:PGSM 7" !Sets the mobile station uplink power control 30 !level to 7 for PGSM band. 40 ! Now set up frequency banded parameters for DCS band. 50 OUTPUT 714;"CALL:TCH:DCS 850" !Sets traffic channel to 850 for DCS band. 60 !The default traffic channel for the DCS 70 !band is 30. 80 OUTPUT 714;"CALL:MS:TXL:DCS 5" !Sets the mobile station uplink power control 90 !level to 5 for the EGSM band. The default level is 100 !15. 110 ! Now change the traffic channel band to DCS. The TCH and uplink power control level 120 ! parameters are set to the values you specified above, not the default values. 130 OUTPUT 714;"CALL:TCH:BAND DCS" 140 ! Now query the traffic channel and uplink power control level. 150 OUTPUT 714;"CALL:TCH?" 160 ENTER 714;Channel 170 OUTPUT 714;"CALL:MS:TXL?" 180 ENTER 714;Tx_lev 190 ! Print the current values. 200 PRINT "The default TCH for the DCS band is 698. The current TCH is: ";Channel 210 PRINT "The default Tx Level is 10. The current Tx Level is: ";Tx_lev 220 END
The following table lists all the frequency banded parameters that apply to GPRS and EGPRS. If you need more information on any of the parameters contained in this table, click the corresponding GPIB command link.
BA Table Points | CALL[:CELL]:BA:TABLe:POINts[:SELected]? |
Packet Data Traffic Channel (ARFCN) | CALL:(PDTCH|PDTChannel)[:ARFCn][:SELected] |
Packet Traffic Channel MAIO | |
Packet Traffic Channel Automatically Populated MA Table Values (Query) |
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Packet Traffic Channel -Number of Automatic MA Table Values (Query) |
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Packet Traffic Channel -Number of Manual MA Table Values (Query) |
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Uplink Burst TX Level | CALL:(PDTCH|PDTChannel):MS:TXLevel[:SELected]:BURSt<[1]|2|3|4|5> |
The following procedure assumes that a data connection has been established between the test set and the mobile station (connection status is Transferring). See Step 4: Make a Connection .
10 OUTPUT 714;"CALL:PDTCH:PGSM 124" !Sets packet data traffic channel to 124 for PGSM 20 !band. 30 OUTPUT 714;"CALL:PDTCH:MS:TXL:PGSM:BURS 7;BURS2 10" !Sets the mobile station uplink 40 !power control level for burst 1 to 7 and burst 2 50 !to 10 for the PGSM band. 60 ! Now set up frequency banded parameters for DCS band. 70 OUTPUT 714;"CALL:PDTCH:DCS 850" !Sets packet data traffic channel to 850 for DCS band. 80 !The default packet data traffic channel for the DCS 90 !band is 30. 100 OUTPUT 714;"CALL:PDTCH:MS:TXL:DCS:BURS 5;BURS2 7" !Sets the mobile station uplink 110 !power control level for burst 1 to 5 and burst 2 for 120 !for the EGSM band. The default levels are 10. 130 ! Now change the packet data traffic channel band to DCS. The PDTCH and uplink power 140 ! control level parameters are set to the values you specified above, not the 150 ! default values. 160 OUTPUT 714;"CALL:PDTCH:BAND DCS" 170 ! Now query the packet data traffic channel and uplink power control levels. 180 OUTPUT 714;"CALL:PDTCH?" 190 ENTER 714;Channel 200 OUTPUT 714;"CALL:PDTCH:MS:TXL:BURS?" 210 ENTER 714;Tx_lev_burs1 220 OUTPUT 714;"CALL:PDTCH:MS:TXL:BURS2?" 230 ENTER 714;Tx_lev_burs2 240 ! Print the current values. 250 PRINT "The default PDTCH for the DCS band is 698. The current PDTCH is: ";Channel 260 PRINT "The default Tx Levels are 10. The current Tx Level for Burst 1 is: ";Tx_lev_burs1 270 PRINT "The default Tx Levels are 10. The current Tx Level for Burst 2 is: ";Tx_lev_burs2 280 END
How the Test Set Performs a Dualband Handover
Configuring the Broadcast Channel (BCH)
Configuring the Traffic Channel (TCH) Parameters