![background image](http://html2.mh-extra.com/html/racal-instruments/3155/3155_user-manual_3125650165.webp)
User Manual 3155
Programming Reference 4-55
TRIGger:SLOPe{POSitive|NEGative}
Purpose
This command sets the edge sensitivity of the trigger input.
•
<POSitive> selects positive edge sensitivity
•
<NEGative> selects negative edge sensitivity
Parameter type
Discrete
TRIGger:SLOPe?
Response and default
The 3155 returns POS, or NEG depending on the present trigger setting. Default value is POS.
TRIGger:SOURce:ADVance{EXTernal|INTernal|TTLTrig<N>|STAR}
Purpose
This command sets the advance source for triggered mode. The backplane on the PXI chassis has some
signals on the P2 connector that allow inter-instrument communication and synchronization. Among these
lines, there are some trigger lines, a STAR trigger, and local bus lines. There are 8 trigger lines that can
serve as source or target. Normally, these lines are designated as tri-state lines. The TRIG:SOUR:TTLT<N>
command converts one of these lines to the 3155’s trigger input. <N> can range from 0 through 7. But only
one line can be selected as an advance source.
•
<EXTernal> selects the external input
•
<INTernal > selects the internal trigger generator (frequency set using the TRIG:TIM command)
•
<N> is selected from 0 through 7
•
<STAR> selects the STAR trigger module. Select this option only if you have a STAR compatible con-
troller in your system
Parameter type
Discrete
TRIGger:SOURce:ADVance?
Response and default
The 3155 returns EXT, INT, TTLT<N>, or STAR depending on the present trigger advance source setting.
Default value is EXT.
TRIGger:TIMer<interval>
Purpose
This command sets the period for the internal trigger generator.
•
<interval> sets the timer of the internal trigger generator
Parameter type
Numeric
Parameter range
Summary of Contents for 3155
Page 4: ...This page was left intentionally blank...
Page 14: ...User Manual 3155 1 2 Overview Figure 1 1 3155 Series...
Page 41: ...User Manual 3155 Installation 2 15 Figure 2 15 Device Manager...
Page 44: ...User Manual 3155 2 18 Installation Figure 2 19 Customer Information Step...
Page 110: ...User Manual 3155 3 58 ArbConnection This page was left intentionally blank...
Page 150: ...User Manual 3155 Programming Reference 4 40...
Page 184: ...User Manual 3155 Programming Reference 4 74 This page was left intentionally blank...
Page 202: ...User Manual 3155 Specifications A 8 This page was left intentionally blank...