Agilent Technologies E1445A Manual de usuario descargar pdf (Pagina 244)

100

101

6. Set the Marker Output Source

[SOURce:]MARKer:FEED “[SOURce:]LIST[1]”

This command selects the

LIST[1] source as the source that outputs a

marker pulse at the “Marker Out” front panel terminals (see Chapter 6

for information on other sources).

7. Setup the Waveform Segment

[SOURce:]LIST[1][:SEGMent]:SELect <name>

[SOURce:]LIST[1][:SEGMent]:DEFine <

length>

8. Store the Waveform Segment as Combined Signed DAC Data

[SOURce:]LIST[1][:SEGMent]:COMBined <combined_list>

This command stores the waveform segment into segment memory in

the Signed format set by the

[SOURce:]ARBitrary:DAC:FORMat

SIGNed

command. The data is sent as a combined list with the

marker bit selected.

9. Setup the Sequence and Generate Output

[SOURce:]LIST[1]:SSEQuence:SELect <name>

[SOURce:]LIST[1]:SSEQuence:DEFine <

length>

[SOURce:]LIST[1]:SSEQuence:SEQuence <

segment_list>

[SOURce:]FUNCtion:USER <

name>

INITiate[:IMMediate]

BASIC Program Example (COMBSIGN)

1 !RE-STORE"COMBSIGN"

2 !This program downloads an arbitrary waveform as a combined

3 !(voltage and marker) list of signed (2’s complement) DAC codes.

4 !The data is sent in an IEEE-488.2 definite length block in 16-bit

5 !integer format. The waveform is a 200 point, -5V to +5V ramp wave.

6 !

10 !Assign I/O path between the computer and E1445A.

20 ASSIGN @Afg TO 70910

30 ASSIGN @Afg1 TO 70910;FORMAT OFF !path for binary data

40 COM @Afg,@Afg1

50 !

60 !Set up error checking

70 ON INTR 7 CALL Errmsg

80 ENABLE INTR 7;2

90 OUTPUT @Afg;"*CLS"

100 OUTPUT @Afg;"*SRE 32"

110 OUTPUT @Afg;"*ESE 60"

120 !

130 !Call the subprograms which reset the AFG and erase all waveform

140 !segments and sequences.

150 CALL Rst

Continued on Next Page

242 High Speed Operation Chapter 7

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