Agilent Technologies 81134A Manuel de service télécharger pdf (Page 32)

SCPI Commands Reference DIGital Commands

32 Agilent 81133A/81134A Pulse Generator Programming Guide, March 2007

Example Set data format to R1.

:DIG:SIGN:FORM R1

:DIGital[1|2][:STIMulus]:SIGNal:POLarity

Syntax

:DIG[1|2][:STIM]:SIGN:POL[?]

Form Set & Query

Description This command is used to program the data polarity for Data and

PRBS signals. The 32- bit data pattern is logically inverted, that is,

1 s are replaced with 0 s and vice versa.

NOTE This is not the same as the

[:SOURce][:PULSe]:POLarity[1|2]

command, which physically inverts the signal by swapping the

OUTPUT and

OUTPUT signals.

Parameter NORMal|COMPlement|INVerted

INVerted are synonyms (INVerted is included for backwards

compatibility).

*RST value NORMal

Example Logically invert the 32- bit data.

:DIG:SIGN:POL INV

:DIGital[1|2][:STIMulus]:SIGNal:

CROSsover:[VALue]

Syntax

:DIG[1|2][:STIM]:SIGN:CROS[?]

Form Set & Query

Description If variable crossover mode is enabled, this command specifies a

value to adjust the crossover point of the NRZ signal in PRBS or

data mode, individually for each channel.

To enable the variable crossover mode, use

“:DIGital[1|2][:STIMulus]:SIGNal: CROSsover:[STATe]” on page 34.

The variable crossover is used to artificially close the eye pattern,

which simulates distortion.

1 2 ... 27 28 29 30 31 32 33 34 35 36 37 ... 103 104

Pas de commentaire

Agilent Technologies 81134A Manuel de service Page 32