Bnc 7000 Series Programmer Manual Bedienungsanleitung PDF herunterladen (Seite 36)

6 Examples (NEEDS REWORK)

6.1

Remote Phase Noise Measurement (FW 1.0)

Following the SCPI command sequence for a typical remote phase noise measurement.

Binary format of list

Example: 0x233231320050C34779689A4800247449

0x23: ASCII code for # -> start

0x32: ASCII code for 2 -> n=2

0x3132: ASCII code for 1 (0x31) and 2 (0x32) -> N=12 (3x 32bit float values)

0x0050C347: 32bit float -> 100000.0

0x79689A48: 32bit float -> 316227.78125

0x00247449: 32bit float -> 1000000.

// configuration

> CONF:RESE ON // reconfigure device before every measurement

> CONF:MEAT:IT // number of iterations

> CONF:MEAS:PPD 150 // number of points per decade

> CONF:FREQ:STAR 100 // start offset frequency 100Hz

> CONF:FREQ:STOP 1E6 // stop offset frequency 1MHz

> CONF:PN:METH CC // cross correlation mode

> CONF:PN:LOOP:AUTO ON // choose best loop bandwidth for locking

> CONF:ATT:AUTO ON // find best attenuation setting

> CONF:MODE PN // measure phase noise

> CONF:FREQ 100E6 // DUT frequency 100MHz

> *OPC? // wait for configuration to complete

< read opc status // returns 1 once the configuration is complete

// measurement

> SENS:PN:INIT // start measurement

> *OPC? // wait for measurement to complete

< read opc status // returns 1 once the measurement is complete

> SENS:PN:INIT? // was the measurement successful?

< read init status // 0: success, <0: failed

> CALC:PN:FREQ? // get offset frequency points

< read list // binary format of list explained below

> CALC:PN:SPEC? // get measurement

read list

// binary format of list explained below

Berkeley Nucleonics Corporation 2955 Kerner Blvd., San Rafael, CA 94901

Phone: 415-453-9955, Fax: 415-453-9956, Email: [email protected]om, Web: www.berkeleynucleonics.com

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Bnc 7000 Series Programmer Manual Bedienungsanleitung Seite 36