DCHn
The Dedicated Channel (DCH) is a downlink or uplink transport channel. The DCH can be transmitted over the entire cell or over only a part of the cell using beam-forming antennas.
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1. DCH |
2. DCH Data |
3. Error Insertion Settings |
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DCHn Configuration Summary Table
This section defines the Settings Current and Apply Needed buttons. Only one button is available at any time. These buttons are available in all of the W-CDMA/HSPA+ Uplink's tree nodes.
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This button indicates that the current real-time settings have been applied to the instrument. No action is required. |
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This button indicates that the instrument settings are not current and need to be updated to be applied to the instrument. Click this button to update the instrument's settings. [:SOURce]:RADio:WCDMa:TGPP[:BBG]:ULINk:APPLy [:SOURce]:RADio:WCDMa:TGPP[:BBG]:ULINk:APPLy? |
1. DCH
Block Size
Range: 0 to 5000
Default: 244 (DCH1), 100 (DCH2), 20 (DCH3-6)
Sets the coupling block size for the selected dedicated transport channel (DCH).
If the parameter set by the following command is changed while the signal is active, the :ULINk:APPLy command or Apply Needed (
) button must be executed for the change to occur.
[:SOURce]:RADio:WCDMa:TGPP[:BBG]:ULINk[:TGRoup[1]]:DCH[1]|2|3|4|5|6:BLKSize <val>
[:SOURce]:RADio:WCDMa:TGPP[:BBG]:ULINk[:TGRoup[1]]:DCH[1]|2|3|4|5|6:BLKSize?
Coding Type
Choice: 1/2 Rate Convolutional Encoder | 1/3 Rate Convolutional Encoder | Turbo Coder | No Coding
Default: 1/3 Rate Convolutional Encoder (DCH1-2), 1/2 Rate Convolutional Encoder (DCH3-6)
Sets the coding type of the data for the DPCH.
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1/2 Rate Convolutional Encoder |
This choice selects a coding with the 1/2 rate convolutional encoder. |
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1/3 Rate Convolutional Encoder |
This choice selects a coding with the 1/3 rate convolutional encoder. |
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Turbo Coder |
This choice selects a coding with the turbo coder. |
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No Coding |
This choice selects no coding type. |
If the parameter set by the following command is changed while the signal is active, the :ULINk:APPLy command or Apply Needed () button must be executed for the change to occur.
[:SOURce]:RADio:WCDMa:TGPP[:BBG]:ULINk:[TGRoup[1]]:DCH[1]|2|3|4|5|6:CODE HCONv|TCONv|TURBo|NONE
[:SOURce]:RADio:WCDMa:TGPP[:BBG]:ULINk:[TGRoup[1]]:DCH[1]|2|3|4|5|6:CODE?
CRC Length
Choice: 0 | 8 | 12 | 16 | 24
Default: 16 (DCH1), 12 (DCH2), 8 (DCH3-6)
Sets the number of the cyclic redundancy check (CRC) bits for DCH.
If the parameter set by the following command is changed while the signal is active, the :ULINk:APPLy command or Apply Needed () button must be executed for the change to occur.
[:SOURce]:RADio:WCDMa:TGPP[:BBG]:ULINk:[TGRoup[1]]:DCH[1]|2|3|4|5|6:CRC 0|8|12|16|24
[:SOURce]:RADio:WCDMa:TGPP[:BBG]:ULINk:[TGRoup[1]]:DCH[1]|2|3|4|5|6:CRC?
TTI
Choice: 10 | 20 | 40 | 80 (ms)
Default: 20 ms (DCH1), 40 ms (DCH2), 10 ms (DCH3-6)
Sets the transmission time interval (TTI) allowed for DCH.
[:SOURce]:RADio:WCDMa:TGPP[:BBG]:ULINk[:TGRoup[1]]:DCH[1]|2|3|4|5|6:TTI 10000|20000|40000|80000
[:SOURce]:RADio:WCDMa:TGPP[:BBG]:ULINk[:TGRoup[1]]:DCH[1]|2|3|4|5|6:TTI?
Bits Per Frame
[:SOURce]:RADio:WCDMa:TGPP[:BBG]:ULINk[:TGRoup[1]]:DCH[1]|2|3|4|5|6:BPFRame?
Bit Rate
The bits rate for the selected dedicated transport channel (DCH). This parameter is not editable.
[:SOURce]:RADio:WCDMa:TGPP[:BBG]:ULINk[:TGRoup[1]]:DCH[1]|2|3|4|5|6:BRATe?
Puncture Rate
The percentage of the total bits removed from or added to the fully coded channel. This parameter is not editable.
[:SOURce]:RADio:WCDMa:TGPP[:BBG]:ULINk[:TGRoup[1]]:DCH[1]|2|3|4|5|6:PPERcentage?
Maximum Puncture Rate
Indicates the allowed maximum puncture rate. This parameter is not editable.
Rate Matching Attribute
Range: 1 to 256
Default: 256 (DCH1-2), 1 (DCH3-6)
Sets the rate matching attribute.
[:SOURce]:RADio:WCDMa:TGPP[:BBG]:ULINk[:TGRoup[1]]:DCH[1]|2|3|4|5|6:RMATch <val>
[:SOURce]:RADio:WCDMa:TGPP[:BBG]:ULINk[:TGRoup[1]]:DCH[1]|2|3|4|5|6:RMATch?
Number of Blocks
Range: 0 to 512
Default: 1
Sets the number of blocks transmitted by the active dedicated transport channel (DCH).
[:SOURce]:RADio:WCDMa:TGPP[:BBG]:ULINk[:TGRoup[1]]:DCH[1]|2|3|4|5|6:NBLock <val>
[:SOURce]:RADio:WCDMa:TGPP[:BBG]:ULINk[:TGRoup[1]]:DCH[1]|2|3|4|5|6:NBLock?
2. DCH Data
Data
Choice: PN9 | PN15 | FIX4 |Custom Pattern | User File
Default: PN9
Edit the Data pattern for the dedicated transport channel (DCH) by clicking on the cell. Then click on the dialog box icon 
to launch the 
Data dialog box .
When loading a user file through the software's Data dialog box, the MXG/EXG requires an ASCII text file consisting of 1s and 0s. When using SCPI commands, all instruments require a binary data file.
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PN9 |
Sets DCH data pattern to PN9. |
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PN15 |
Sets DCH data pattern to PN15. |
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FIX4 |
Sets the DCH data pattern to FIX4 (4-bit binary). |
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Pattern |
This choice selects custom as the data source. |
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User File |
This variable represents a data pattern file stored in instrument memory. The data pattern must contain at least one bit or the Play feature will not work. |
If the parameter set by the following command is changed while the signal is active, the :ULINk:APPLy command or Apply Needed () button must be executed for the change to occur.
[:SOURce]:RADio:WCDMa:TGPP[:BBG]:ULINk:[TGRoup[1]]:DCH[1]|2|3|4|5|6:DATA PN9|PN15|FIX4|PATTern|"<filename>"
[:SOURce]:RADio:WCDMa:TGPP[:BBG]:ULINk:[TGRoup[1]]:DCH[1]|2|3|4|5|6:DATA?
If you select <"filename">, PATTern or FIX4, use the following commands to create the pattern:
[:SOURce]:RADio:WCDMa:TGPP[:BBG]:ULINk[:TGRoup[1]]:DCH[1]|2|3|4|5|6:DATA:FIX4 <val>
[:SOURce]:RADio:WCDMa:TGPP[:BBG]:ULINk[:TGRoup[1]]:DCH[1]|2|3|4|5|6:DATA:FIX4?
[:SOURce]:RADio:WCDMa:TGPP[:BBG]:ULINk[:TGRoup[1]]:DCH[1]|2|3|4|5|6:DATA:PATTern <val>
[:SOURce]:RADio:WCDMa:TGPP[:BBG]:ULINk[:TGRoup[1]]:DCH[1]|2|3|4|5|6:DATA:PATTern?
3. Error Insertion Settings
Error Insertion Mode
Choice: None | BER | BLER
Default: None
Sets the error insertion mode.
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BLER |
This choice selects a block error rate (BLER) mode. |
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BER |
This choice selects a bit error rate (BER) mode. |
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NONE |
This choice selects no BLER or BER mode (no error blocks or bits inserted). |
[:SOURce]:RADio:WCDMa:TGPP[:BBG]:ULINk[:TGRoup[1]]:DCH[1]|2|3|4|5|6:DATA:EINSert BLER|BER|NONE
[:SOURce]:RADio:WCDMa:TGPP[:BBG]:ULINk[:TGRoup[1]]:DCH[1]|2|3|4|5|6:DATA:EINSert?
BLER
Range: 0 to 1, Resolution: 0.001
Default: 0
Sets the BLER for the BLER insertion.
If the parameter set by the following command is changed while the signal is active, the :ULINk:APPLy command or Apply Needed () button must be executed for the change to occur.
[:SOURce]:RADio:WCDMa:TGPP[:BBG]:ULINk[:TGRoup[1]]:DCH[1]|2|3|4|5|6:DATA:BLER[:VALue] <val>
[:SOURce]:RADio:WCDMa:TGPP[:BBG]:ULINk[:TGRoup[1]]:DCH[1]|2|3|4|5|6:DATA:BLER[:VALue]?
BLER Error Blocks
Shows the number of error blocks for the BLER error insertion.
[:SOURce]:RADio:WCDMa:TGPP[:BBG]:ULINk[:TGRoup[1]:DCH[1]|2|3|4|5|6:DATA:BLER:ERRor:BLOCk?
BLER Total Blocks
Shows the number of total blocks for the BLER error insertion.
[:SOURce]:RADio:WCDMa:TGPP[:BBG]:ULINk[:TGRoup[1]:DCH[1]|2|3|4|5|6:DATA:BLER:TOTal:BLOCk?
BER
Range: 0 to 1, Resolution: 0.0001
Default: 0
Sets the BER for the BLER insertion.
If the parameter set by the following command is changed while the signal is active, the :ULINk:APPLy command or Apply Needed () button must be executed for the change to occur.
[:SOURce]:RADio:WCDMa:TGPP[:BBG]:ULINk[:TGRoup[1]]:DCH[1]|2|3|4|5|6:DATA:BER[:VALue] <val>
[:SOURce]:RADio:WCDMa:TGPP[:BBG]:ULINk[:TGRoup[1]]:DCH[1]|2|3|4|5|6:DATA:BER[:VALue]?
BER Error Bits
Shows the number of error bits for the BER error insertion.
[:SOURce]:RADio:WCDMa:TGPP[:BBG]:ULINk[:TGRoup[1]]:DCH[1]|2|3|4|5|6:DATA:BER:ERRor:BIT?
BER Total Bits
Shows the number of total bits for the BER error insertion.
[:SOURce]:RADio:WCDMa:TGPP[:BBG]:ULINk[:TGRoup[1]]:DCH[1]|2|3|4|5|6:DATA:BER:TOTal:BIT?