Agilent Technologies N4962A Podręcznik Użytkownika Pobierz pdf (Strona 81)

Serial BERT 12.5 Gb/s User Guide

The next block of code shows how to save the instrument state in one of the

save/recall registers (0-9), how to change the value of the internal HF clock,

and how to restore the previous instrument state saved in the save/recall

50 OUTPUT 725; "*SAV 1" ! save current inst. state in reg 1

60 OUTPUT 725; ":SOURCE:ROSC:FREQ 11111" ! change the BERT freq to 11111MHz

70 OUTPUT 725; ":SOURCE:ROSC:INT:FREQ?" ! query the source frequency

80 ENTER 725; freq$ ! read the result

90 PRINT freq$ ! print the frequency results

100 OUTPUT 725; "*RCL 1" ! recall the prior state (frequency)

The next block of code shows how to get the SCPI version number.

110 OUTPUT 725; ":SYSTEM:VERSION?" ! query the control version

120 ENTER 725; version$ ! read the result

130 PRINT version$ ! print the version

This block shows how to manually set the error detector phase, and how to

use the automatic detector phase adjust feature via GPIB control.

140 OUTPUT 725; ":SENSE:ROSC:PHASE 100" ! set detector phase to 100 degrees

150 OUTPUT 725; ":SENSE:ROSC:PHASE?" ! query the value of detector phase

160 ENTER 725; phase$ ! read the result

170 PRINT phase$ ! print the phase value

180 OUTPUT 725; ":SENSE:ROSC:PHASE AUTO" ! auto-select the best phase

190 OUTPUT 725; ":SENSE:ROSC:PHASE?" ! query the value of detector phase

200 ENTER 725; phase$ ! read the result

200 PRINT phase$ ! print the optimum phase value

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Agilent Technologies N4962A Podręcznik Użytkownika Strona 81