CCS Standardfunction   FGN_Trigger [], FGN1_Trigger []
 

FGN_Trigger [], FGN1_Trigger []

SignalType [Int]

StartEdge [Str]

StartLevel [V]

TriggerEdge [Str]

TriggerLevel [V]

TriggerHigh [CU pin [INT]/Test Pt[Str]]

TriggerLow [CU pin [INT]/Test Pt[Str]]

Description of Function

Prepares for triggered signal output on a signal generator. The trigger event is defined using the parameters TriggerEdge, TriggerLevel, TriggerHigh and TriggerLow.

Signal output is specified by means of the parameters SignalType, StartEdge and StartLevel. At present, only the value 0 V is allowed for StartLevel. Signal output starts when the trigger event occurs at the TriggerHigh pin and ends the next time the function is invoked.

In similar fashion to FGN_Trigger for the FGN signal, FGN1_Trigger is provided for the function generator FGN1.

This function does not return a value.

Testing Points

None

Parameters

Signal Type

Specifies the FGN type for the periodic signal to be generated (at present 1;4; 5 or 6).

StartEdge

Specifies the signal edge with which the signal generator starts its signal. Permissible values: p/n

StartLevel

Specifies the absolute signal level (inc. offset) with which the signal generator is to start its signal. At present, only the value 0 V is allowed.

TriggerEdge

Specifies the signal edge that is to be interpreted by the signal generator as the active trigger signal. Permissible values: p/n

TriggerLevel

Specifies the signal level at which the signal generator is to detect a High or Low signal at the trigger input.

TriggerHigh

Specifies the pin to which the trigger input of the signal generator is to be connected. The pin is deactivated by ,-,

TriggerLow

Specifies the pin to which the trigger input reference of the signal generator is to be connected. The pin is deactivated by ,-,

Example:

FGN_Trigger (6, p, 0, n, 2.5, 15,22)

Signal output is started using signal type 6 with a starting level of 0 V if a negative trigger edge of 2.5 V is detected at the trigger input. The trigger input is connected to Pin 15 with Pin 22 as the reference.

FGN_Trigger (,,,,,-,-)

The connections to the frequency generator trigger input are deactivated.