Table Of Contents

ni579x Send User Command (G Dataflow)

Last Modified: January 9, 2017

Sends user commands using the register bus.

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Register Bus

Register Bus object created by ni579x Open and used as the session handle for the NI-579x Configuration nodes.

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scope

Ignored.

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timeout

Specifies the amount of time that the node waits, in ms, for the operation to complete.

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wait for completion?

Specifies whether to wait for the node to complete.

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User Command

Refer to the following table for valid commands, arguments, and return values.

User Setting User Command Value (U8) User Data 0 Value (U16) User Data 1 Value (U8)
Set Clock Select – Sets the Sample Clock to the specified setting. 0

0 = Internal Sample Clock.

1 = Internal Sample Clock locked to an external Reference Clock through the CLK IN connector.

2 = External Sample Clock through the CLK IN connector.

3 = Internal Sample Clock locked to an external Reference Clock through the IoModSyncClock.

N/A
Set CLK OUT Source – Determines the CLK OUT output. 1

0 = disabled

1 = Reference Clock

2 = Sample Clock

N/A
DAC Sync User Start – Sets up the DAC to receive a user supplied SYNC pulse. After this command returns, send a rising edge on the Synchronize DAC CLIP signal to send a SYNC pulse to the DAC, then send CmdDacSyncUserEnd. Refer to the DAC datasheet for the use of the SYNC signal. 2 N/A N/A
DAC Sync User End – Finalizes DAC synchronization and checks for errors. 3 N/A N/A
Set Tx Attenuation – Sets the Tx Programmable Attenuator to the attenuation specified in UserData0. 9 Attenuation (.25 dB per LSB, max 31.75 dB or 0x7F) N/A
Set LO Filter – Configures the Tx LO filter path. 32 Non-zero = Tx LO

Byte setting. Refer to the following list for cut-off frequencies for each byte.

0xF1 : 316 MHz

0xEC : 474 MHz

0xE9 : 711 MHz

0xD6 : 1,066 MHz

0xD3 : 1,600 MHz

0xCE : 2,400 MHz

0xCB : 3,600 MHz

0xF : >3,600 MHz

Set Front End Filter – Configures the Tx front end filters. 33 Non-zero = Tx

Byte setting. Refer to the following list for cut-off frequencies for each byte.

0x00 : <3,600 MHz

0x01 : <2,400 MHz

0x02 : <1,600 MHz

0x03 : <1,066 MHz

0x04 : <711 MHz

0x05 : <474 MHz

0x06 : <316 MHz

0x07 : >3,600 MHz

Set LO Power – Turns the LO and the LO power supply on and off. 34 0 = LO

0 = off

Non-zero = on

Set Routing Mux – Configures all the multiplexers that control LO paths and signal paths (not including filters). Each mux is either 2:1 or 1:2, so there are only two options for UserData1 per mux. 37 Refer to the Mux Select Enumeration table.

0 = off/default

Non-zero = on

Refer to the Mux Select Enumeration table for details.

Read Revision Lower – Reads the lower two bytes of the CLIP Revision. 240 N/A N/A
Read Revision Upper - Reads the upper two bytes of the CLIP Revision 241 N/A N/A
Read Oldest Compatible Revision Lower - Reads the lower two bytes of the oldest compatible revision of the CLIP. 242 N/A N/A
Read Oldest Compatible Version Upper - Reads the upper two bytes of the oldest compatible revision of the CLIP. 243 N/A N/A
Reinitialize - Reinitializes the module and CLIP. The CLIP pulls the Initialization Done signal low before acquiring the Reinitialize command. Wait for the Initialization Done signal to go high before proceeding. 255 Refer to the Mux Select Enumeration table.

0 = off/default

Non-zero = on

Refer to the Mux Select Enumeration table for details.

Table 1. Mux Select Enumeration
Value Name Setting
0 LoSource

0 = Internal LO

Non-zero = External LO

2 LoOut

0 = LO Out off

Non-zero = LO Out on

3 TxModBypass

0 = Tx modulator bypass disable

Non-zero = Tx modulator bypass enable

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Error In

Error conditions that occur before this node runs. Use this information to decide whether to bypass any functionality if this node receives errors from other nodes.

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Register Bus (out)

The Register Bus object created by ni579x Open and used as the session handle for the NI-579x Configuration nodes.

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read return values?

Specifies whether to read return values from the user return value parameter.

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user command status

Indicates whether the previous command completed successfully.

0 = successful

Nonzero = unsuccessful

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user return value

Returns data configured by the User Command signal.

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user command error

Indicates that an error occurred and that you must reinitialize the device .

0 = no error

Nonzero = error

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Error Out

Information about errors or warnings that occurred during or before the execution of this node.

Where This Node Can Run:

Desktop OS: Windows

FPGA: Not supported


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