Counter 1 - Measure Frequency & Counter 0 - Generate PWM POSSIBLE?

[labview1958]

Is this POSSIBLE with a NI-6025E DAQ card? Can I use the two counters to generate % control a TTL PWM signal and at the same time measure frequency from a circuit? This is my connection.


GPCTR1_SOURCE - connected to find frequency circuit
GPCTR1_OUT - connected to GPCTR0_GATE
GPCTR1-GATE - not in use


GPCTR0_SOURCE - not in use
GPCTR0_OUT - connected to DC motor circuit
GPCTR0-GATE - connected to GPCTR1_OUT

My concern is that changing or controlling the TTL PWM might change the frequency reading. This is because COUNTER O is connected to COUNTER 1.

[labview1958]

I understand to measure frequency of a signal there are TWO methods. A ONE counter method and a TWO counter method. I need to measure a frequency between 1 Hz to 200 Hz. Is the ONE counter method possible? What is the ONE counter method?

[labview1958]

Is this the connections for the ONE counter method?

GPCTR0_SOURCE - connected to find frequency circuit
GPCTR0_OUT - not connected
GPCTR0-GATE - not connected

Is there an example of the ONE counter method somewhere?

[Sean_C.]

Hello,

Please see you original post at:
http://forums.ni.com/ni/board/message?board.id=40&message.id=2263

Regards,
Sean C.