PTZ terms

[marty_88 0]

Just wondering this is pretty standard now days with many good PTZ's. But can someone please tell me what they actually mean.

 

No Accumulative Error with Preset Function.

Shortest Path by Vector Drive Technology.

High Accuracy with Micro-Stepping Control Technology.

 

Thanks

[DDSC2060 0]

Hmm.....Pan, Tilt, Zoom. These cameras are very nice, however, require tech support and have wear and tear on the belts. I actually have sold a bunch of these esp the auto-track PTZ. We took one to the ISC West trade show in Las Vegas last Novemeber at the Casino Gambling trade show and we got good responses.....but yea they are awesome with a 22x optical zoom i can look at the neighboors next door to us..lol

 

-chad -

[SureVeillance 0]

Well, by searching on these terms it was easy enough to find out which camera's brochure you were reading.

 

No Accumulative Error with Preset Function.

 

This means that regardless of how much you pan and tilt around you will always come back to the same place when you select one of the presets.

 

Shortest Path by Vector Drive Technology.

 

This means that if you are going from preset 1 to preset 2 and it involves an x and y movement, the drive will figure out a diaganol path (vector) instead of first moving x and then moving y

 

High Accuracy with Micro-Stepping Control Technology.

 

This indicates the precision with which a location can be selected. (see correct explanation below)

 

I'll leave it to you to separate the marketing hype from the unique features.

Edited September 7, 2007 by Guest

[kensplace 0]

Sort of, Stepper motors themselves dont actually have any marks or grooves that they read. In fact, the motors themselves dont read or supply any positioning information.

 

Stepper motors rely on how they are designed to keep accurate position, a stepper motor has several 'poles' that when supplied by power, 'step' the motor to the next position.

 

By powering the poles in the correct order, you can 'step' the motor one step at a time until it has done a full revolution.

 

Microstepping is where they provide power to more than one set of poles at a time, in order to get it to move to a point in between the two positions, ie doubling the number of steps.

 

You can provide power to more poles, in order to get finer resolution of the steps. The software or hardware in the driver for the motor keeps track of the position, by counting how many steps it has done.

Its also the motor driver that is responsible for stepping or microstepping or half stepping the motor, the motor itself (unlike a normal motor) would not spin if power was applied to it. It would just step to one position and stay still.