When I run the following burst schedule it doesn't trigger.

RA;BURST(2000,4000,LEVEL,50,0S) LOGONA GA 
1VNC(S2,"Starting current",LEVEL>720,GL5V) 
2VNC(S1,"Capacitor Voltage",GL5V)

If I remove the 2VNC line it works. What's going on? Do I need to specify a LEVEL in the 2 VNC line?

Thank you in advance.

Good afternoon jacksb,

I can't see any thing wrong with the second line and no you don't need to specify a level on the second line. What is in the rest of the DT800 code?

Cheers,
Roger

Roger, thank you for your comments. The rest of the code is

DT\d

BEGIN"BURST"

CATTN

S1=0,1000,400,2000"V"
S2=0,100,400,2000"A"

P15=2
P31=3

RA;BURST(2000,4000,LEVEL,50,0S) LOGONA GA
1VNC(S2,"Starting current",LEVEL>720,GL5V)
2VNC(S1,"Capacitor Voltage",GL5V)

END

I deliberately set the LEVEL where it would trigger to check it worked. However it would not trigger with the 2VNC line. In both cases the DT800 responds with pre-trigger filled, waiting for trigger (I can't remember the exact text).

Good afternoon Jack,

I've just tested your code and it is triggering as expected. Are you sure the trigger level is correct? The level is in millivolts

Cheers,
Roger

Roger,

I realize the LEVEL is in millivolts. I'm using a 100 amp shunt (100 mV) and a transducer that gives 4 to 20 mA into 100 ohm resistor. 720 mV should be equivalent to 20 amps.

When you tested the code it reported both channels 1VNC and 2 VNC?

Good afternoon Jack,

Yes

Roger