For time-domain candidate location of each PRACH burst, you can edit Frame Offset, Subframe Index (Slot Index), n_RA_t, and n_RA_slot, but candidate values should be determined by the current configuration index.

For a frequency-domain candidate location of each PRACH burst, the range of n_RA_f is 0 to (Msg1 FDM - 1).

For each PRACH burst, use Preamble Index and PRACH Root Sequence Index to determine the Root Sequence Index and Cyclic Shift Index. You can also edit Root Sequence Index and Cyclic Shift Index if Preamble Index is set to -1.

RA_RNTI is a read-only parameter for your information only.

You can also set the Configuration Index to -1 for a user-defined PRACH. In this case, you can specify PRACH Format, Symbol Start, Subframe Index (slot index), and n_RA_f, but the following will automatically be set:

Frame Period is fixed to 1
Number of PRACH slots is fixed to 2
Number of time-domain PRACH occasions within a PRACH slot is fixed to 1

When recalling a settings file (*.scp) with N7631C v2.0, the configuration index is automatically set to -1 for backwards compatibility.

Add Burst

Adds a Burst to the Multi-Burst Configuration Table. The Burst is inserted above the currently selected Burst in the table. Up to 100 bursts can be added.

GUI Location	Apps > 5G NR > Carrier PRACH > PRACH > Bursts > + sign to Add
SCPI Command	[:SOURce]:RADio:NR5G:WAVeform[:ARB]:CCARrier<carrier>:PRACh:BURSt:ADD
SCPI Example
Initial S/W Revision	A.09.00

Delete Burst

Deletes the currently selected Burst from the Multi-Burst Configuration Table. The initial Burst in PRACH cannot be removed.

GUI Location	Apps > 5G NR > Carrier PRACH > PRACH > Bursts > Ellipsis icon > Delete
SCPI Command	[:SOURce]:RADio:NR5G:WAVeform[:ARB]:CCARrier<carrier>:PRACh:BURSt:DELete <integer>
SCPI Example
Initial S/W Revision	A.09.00

Copy Burst

Copies the currently selected Burst to the last row of the Multi-Burst Configuration Table. Up to 100 bursts can be configured.

GUI Location	Apps > 5G NR > Carrier PRACH > PRACH > Bursts > Ellipsis icon > Copy
SCPI Command	[:SOURce]:RADio:NR5G:WAVeform[:ARB]:CCARrier<carrier>:PRACh:BURSt:COPY <integer>
SCPI Example
Initial S/W Revision	A.09.00

Burst Count

Displays the number of configured bursts.

GUI Location	Apps > 5G NR > Carrier PRACH > PRACH > Bursts > Displays the configured bursts
SCPI Command	[:SOURce]:RADio:NR5G:WAVeform[:ARB]:CCARrier<carrier>:PRACh:BURSt:COUNt?
SCPI Example	RADio:NR5G:WAVeform:CCAR0:PRACh:BURSt:COUN?
Preset	1
Saved State	Yes
Initial S/W Revision	A.09.00

Enabled

Enables the selected Burst.

GUI Location	Apps > 5G NR > Carrier PRACH > PRACH > Bursts > Enabled
SCPI Command	[:SOURce]:RADio:NR5G:WAVeform[:ARB]:CCARrier<carrier>:PRACh:BURSt<channel>[:STATe] ON\|OFF\|1\|0 [:SOURce]:RADio:NR5G:WAVeform[:ARB]:CCARrier<carrier>:PRACh:BURSt<channel>[:STATe]?
SCPI Example
Preset	On
Saved State	Yes
Initial S/W Revision	A.09.00

Power Boosting

Sets the relative power boosting (in dB) of the PRACH physical channel. This is a power scaling based on the constellation defined in 5.1.3/4/5/6 of 38.211.

GUI Location	Apps > 5G NR > Carrier PRACH > PRACH > Bursts > Power Boosting
SCPI Command	[:SOURce]:RADio:NR5G:WAVeform[:ARB]:CCARrier<carrier>:PRACh:BURSt<channel>:POWer <real> [:SOURce]:RADio:NR5G:WAVeform[:ARB]:CCARrier<carrier>:PRACh:BURSt<channel>:POWer?
SCPI Example
Preset	0 dB
Saved State	Yes
Min	-40
Max	40
Initial S/W Revision	A.09.00

Timing Offset

GUI Location	Apps > 5G NR > Carrier PRACH > PRACH > Bursts > Timing Offset
SCPI Command	[:SOURce]:RADio:NR5G:WAVeform[:ARB]:CCARrier<carrier>:PRACh:BURSt<channel>:TOFFset <real> [:SOURce]:RADio:NR5G:WAVeform[:ARB]:CCARrier<carrier>:PRACh:BURSt<channel>:TOFFset?
SCPI Example
Preset	0
Saved State	Yes
Min	0
Max	0.001 (1 ms)
Initial S/W Revision	A.09.00

PRACH Format

Displays the PRACH burst format.

GUI Location	Apps > 5G NR > Carrier PRACH > PRACH > Bursts > PRACH Format
SCPI Command	[:SOURce]:RADio:NR5G:WAVeform[:ARB]:CCARrier<carrier>:PRACh:BURSt<channel>:FORMat?
SCPI Example
Preset	Format 0 (F0)
Saved State	Yes
Range	F0 \| F1 \| F2 \| F3 \| FA0 \| FA1 \| FA2 \| FA3 \| FB1 \| FB2 \| FB3 \| FB4 \| FC0 \| FC2
Initial S/W Revision	A.09.00

Preamble Index

Sets the preamble index for the selected PRACH.

GUI Location	Apps > 5G NR > Carrier PRACH > PRACH > Bursts > Preamble Index
SCPI Command	[:SOURce]:RADio:NR5G:WAVeform[:ARB]:CCARrier<carrier>:PRACh:BURSt<channel>:PREamble <integer> [:SOURce]:RADio:NR5G:WAVeform[:ARB]:CCARrier<carrier>:PRACh:BURSt<channel>:PREamble?
SCPI Example
Preset	0
Saved State	Yes
Min	-1
Max	63
Initial S/W Revision	A.09.00

Logical Root Sequence Index (i)

Preamble Index must be set to -1 (User Defined) in order to set this parameter.

GUI Location	Apps > 5G NR > Carrier PRACH > PRACH > Bursts > Logical Root Sequence Index (i)
SCPI Command	[:SOURce]:RADio:NR5G:WAVeform[:ARB]:CCARrier<carrier>:PRACh:BURSt<channel>:LRSindex <integer> [:SOURce]:RADio:NR5G:WAVeform[:ARB]:CCARrier<carrier>:PRACh:BURSt<channel>:LRSindex?
SCPI Example
Preset	0
Saved State	Yes
Initial S/W Revision	A.09.00

Sequence Number

GUI Location	Apps > 5G NR > Carrier PRACH > PRACH > Bursts > Sequence Number
SCPI Command	[:SOURce]:RADio:NR5G:WAVeform[:ARB]:CCARrier<carrier>:PRACh:BURSt<channel>:SNUMber?
SCPI Example
Preset	129
Saved State	Yes
Initial S/W Revision	A.09.00

Cyclic Shift Index (v)

Preamble Index must be set to -1 (User Defined) in order to set this parameter.

GUI Location	Apps > 5G NR > Carrier PRACH > PRACH > Bursts > Cyclic Shift Index (v)
SCPI Command	[:SOURce]:RADio:NR5G:WAVeform[:ARB]:CCARrier<carrier>:PRACh:BURSt<channel>:CSINdex <integer> [:SOURce]:RADio:NR5G:WAVeform[:ARB]:CCARrier<carrier>:PRACh:BURSt<channel>:CSINdex?
SCPI Example
Preset	1
Saved State	Yes
Initial S/W Revision	A.09.00

Cyclic Shift (Cv)

GUI Location	Apps > 5G NR > Carrier PRACH > PRACH > Bursts > Cyclic Shift Index (Cv)
SCPI Command	[:SOURce]:RADio:NR5G:WAVeform[:ARB]:CCARrier<carrier>:PRACh:BURSt<channel>:CSHift?
SCPI Example
Preset	0
Saved State	Yes
Initial S/W Revision	A.09.00

Frame Offset

GUI Location	Apps > 5G NR > Carrier PRACH > PRACH > Bursts > Frame Offset
SCPI Command	[:SOURce]:RADio:NR5G:WAVeform[:ARB]:CCARrier<carrier>:PRACh:BURSt<channel>:FRAMe:OFFSet <integer> [:SOURce]:RADio:NR5G:WAVeform[:ARB]:CCARrier<carrier>:PRACh:BURSt<channel>:FRAMe:OFFSet?
SCPI Example
Preset	0
Saved State	Yes
Initial S/W Revision	A.09.00

Subframe Index

GUI Location	Apps > 5G NR > Carrier PRACH > PRACH > Bursts > Subframe Index
SCPI Command	[:SOURce]:RADio:NR5G:WAVeform[:ARB]:CCARrier<carrier>:PRACh:BURSt<channel>:SLOT:INDex <integer> [:SOURce]:RADio:NR5G:WAVeform[:ARB]:CCARrier<carrier>:PRACh:BURSt<channel>:SLOT:INDex?
SCPI Example
Preset	1
Saved State	Yes
Choices	1 - 9
Initial S/W Revision	A.09.00

n_RA_t

GUI Location	Apps > 5G NR > Carrier PRACH > PRACH > Bursts > n_RA_t
SCPI Command	[:SOURce]:RADio:NR5G:WAVeform[:ARB]:CCARrier<carrier>:PRACh:BURSt<channel>:NRAT <integer> [:SOURce]:RADio:NR5G:WAVeform[:ARB]:CCARrier<carrier>:PRACh:BURSt<channel>:NRAT?
SCPI Example
Preset	1
Saved State	Yes
Initial S/W Revision	A.09.00

n_RA_slot

GUI Location	Apps > 5G NR > Carrier PRACH > PRACH > Bursts > n_RA_slot
SCPI Command	[:SOURce]:RADio:NR5G:WAVeform[:ARB]:CCARrier<carrier>:PRACh:BURSt<channel>:NRASlot <integer> [:SOURce]:RADio:NR5G:WAVeform[:ARB]:CCARrier<carrier>:PRACh:BURSt<channel>:NRASlot?
SCPI Example
Preset	0
Saved State	Yes
Min	0
Max	1
Initial S/W Revision	A.09.00

n_RA_f

GUI Location	Apps > 5G NR > Carrier PRACH > PRACH > Bursts > n_RA_F
SCPI Command	[:SOURce]:RADio:NR5G:WAVeform[:ARB]:CCARrier<carrier>:PRACh:BURSt<channel>:NRAF <integer> [:SOURce]:RADio:NR5G:WAVeform[:ARB]:CCARrier<carrier>:PRACh:BURSt<channel>:NRAF?
SCPI Example
Preset	0
Saved State	Yes
Initial S/W Revision	A.09.00

Occasion Index

GUI Location	Apps > 5G NR > Carrier PRACH > PRACH > Bursts > Occasion Index
SCPI Command	[:SOURce]:RADio:NR5G:WAVeform[:ARB]:CCARrier<carrier>:PRACh:BURSt<channel>:OCCasion?
SCPI Example
Preset	0
Saved State	Yes
Initial S/W Revision	A.09.00

RA_RNTI

GUI Location	Apps > 5G NR > Carrier PRACH > PRACH > Bursts > RA_RNTI
SCPI Command	[:SOURce]:RADio:NR5G:WAVeform[:ARB]:CCARrier<carrier>:PRACh:BURSt<channel>:RARNti?
SCPI Example
Preset	15
Saved State	Yes
Initial S/W Revision	A.09.00