Agilent Technologies N5171B User Manual

128 Agilent X-Series Signal Generators SCPI Command Reference
System Commands
Memory Subsystem (:MEMory)
Example
:MEM:DATA:FSK "4FSK",4,2kHZ,1kHZ,2kHZ,1kHZ,ON,2,1,0
The preceding example downloads a four- level FSK data to a file named 4FSK. There are four states
(frequencies): 2kHZ, 1kHZ, 2kHZ, 1kHZ; differential encoding is toggled ON, and there are two
differential states 1 and 0. The table shown below describes the command parameters.
Remarks Refer to File Name Variables for information on the file name syntax.
:DATA:IQ
Supported N5172B with Option 653 or 655, N5182B with Option 656 or 657
:MEMory:DATA:IQ "<file_name>",<offsetQ>,<num_states>,<i0>,<q0>,<i1>,
<q1>,...<i(n)>,<q(n)>[,<diff_state>,<num_diff_states>,<diff0>,<diff1>,..<diff(n)>]
:MEMory:DATA:IQ? "<file_name>"
This command loads custom I/Q data into a file in the signal generator’s non-volatile memory.
The query returns data in the following form:
<offsetQ>,<num_states>,<i0>,<q0>,<i1>,<q1>,...<i(n)>,<q(n)>,<diff_state>,<num_diff_st
ates>,<diff0>,<diff1>,...<diff(n)>
"<file_name>" This variable string identifies the name of the I/Q file. The filename must be
enclosed with quotation marks.
•
"4FS K"
4FSK is the FSK file name. The directory path is not needed. The
path "/USER/FSK" is implied.
• 4
Number of states
-2kHz First frequency state
- 1kHz Second frequency state
2kHz Third frequency state
1kHz Fourth frequency state
ON Differential encoding is on
2 Number of differential states
1 Value of the first differential state.
0 Value of the second differential state.
Range num_diff_states: 0–256
num_states: 2–16
f0–f(n): 20MHZ to 20MHZ (For ARB custom modulation, the range
values vary with the symbol rate values.)
diff0–diff(n): 128 to 127

Agilent Technologies N5171B Specifications

General

Frequency Range	9 kHz to 6 GHz
Frequency Resolution	0.01 Hz
Amplitude Accuracy	±0.5 dB
I/Q Modulation	Yes
Waveform Playback	Yes
Display	Color LCD
Modulation Types	AM, FM, PM, Pulse
Interface	LAN, USB, GPIB

Summary

1 SCPI Basics

SCPI Command Syntax and Structure

Explains common terms, command syntax, types, tree structure, parameters, responses, and program messages.

2 Basic Function Commands

3 System Commands

4 Analog Modulation Commands

Amplitude Modulation Subsystem–Option UNT

Details commands for amplitude modulation, including depth, track, step, external coupling, and impedance.

Frequency Modulation Subsystem–Option UNT

Covers commands for frequency modulation, including external coupling, impedance, dual function, shape, and frequency.

Phase Modulation Subsystem–Option UNT

Details commands for phase modulation, including bandwidth, external coupling, impedance, dual function, and shape.

5 Arb Commands

Dmodulation Subsystem–N5172B/82B with Option 431

Details commands for Dmodulation, including baseband frequency offset, filters, and noise settings.

Dual ARB Subsystem–N5172B/82B

Explains commands for Dual ARB, including baseband frequency offset, clipping, header, and noise parameters.

Multitone Subsystem–N5172B/82B

6 Digital Signal Interface Module Commands

Digital Subsystem—Option 003 and 004

7 Real–Time Commands

AWGN Real–Time Subsystem–Option 403

Custom Subsystem–Option 431

Phase Noise Subsystem–Option 432