VXi VT1529A/B 사용자 설명서

When the INITiate[:IMMediate] command is sent, the VT1422A builds the 
input Scan List from the input channels referenced when an algorithm is 
defined with the ALG:DEF command above and from the channels 
referenced with the ROUTe:SEQuence:DEFine command. The module also 
enters the Waiting For Trigger State. In this state, all that is required to start 
a scan and/or run an algorithm is a trigger event for each pass through the 
input-calculate-output instrument operation cycle. To initiate the module, 
send the command:

INIT

When an INIT command is executed, the driver checks several interrelated 
settings programmed in the previous steps. If there are conflicts in these 
settings an error message is placed in the Error Queue (read with the 
SYST:ERR? query). Some examples:

•

If TRIG:SOUR is not TIMer then ARM:SOUR must be IMMediate.

•

The time it would take to execute all algorithms is longer than the 

TRIG:TIMER interval currently set.

Once the module is INITiated it can accept triggers from any source 
specified in TRIG:SOUR.

TRIG:SOUR TIMER

ARM:SOUR IMM

INIT

or

TRIG:SOUR TIMER

ARM:SOUR HOLD

INIT

ARM

... and the algorithms start to execute.

1

INPUT

from SCP
channels,

analog &

digital

4

OUTPUT

output table

sent to SCP

channels

1

INPUT

from SCP
channels,

analog &

digital

1A

VERIFY

SCAN

and update

scan statue

variables

3

EXECUTE ALGS

execute all enabled algorithms

4

OUTPUT

output table

sent to SCP

channels

2

UPDATE

variables &

algorithms

Trigger Event

Set by ALG:OUTPUT:DELay (if any)

Trigger Event