ATE Programmable Load as Pull Down Resistor

[tokwatbaboy]

Hi, any test engineers here?
Quite curious, how to program the programmable load on ATE to act as pull-down resistor?

TIA.

 

[betwixt]

What ATE are you talking about?

Brian.

 

[tokwatbaboy]

What ATE are you talking about?

Brian.

Hi BRian,
ATE = Automatic Test Equipment (Verigy 93K, Teradyne J750, etc.). Thanks!

 

[betwixt]

I was trained on HP, Genrad, Teradyne and Fairchild ATE and have years of experience doing digital modelling and programming on them. Each uses different methods though, that's why I asked which in particular you meant.

For normal logic pull-down I would suggest a simple resistor and to use one of the ATE relays to connect it to ground. A programmable load is normally used in higher power applications and it may not have sufficiently low impedance at high frequencies to work in a logic circuit.

Brian.

 

[tokwatbaboy]

I was trained on HP, Genrad, Teradyne and Fairchild ATE and have years of experience doing digital modelling and programming on them. Each uses different methods though, that's why I asked which in particular you meant.

For normal logic pull-down I would suggest a simple resistor and to use one of the ATE relays to connect it to ground. A programmable load is normally used in higher power applications and it may not have sufficiently low impedance at high frequencies to work in a logic circuit.

Brian.

Thanks Brian. Unfortunately my DIB (Loadboard) does not have external resistor connected to pins thru relay so I was thinking of using the programmable load to act as the resistor. I am using Credence Sapphire now.

I am trying to test USBx and one of my test requires to pull down some pins externally for my test to work.

Thanks!
Tokwatbaboy

 

[betwixt]

Can you wire a relay and resistor yourself and operate it by setting a voltage from the ATE. For high speed work I have done I used a small DIL reed relay wired inside the test jig and used a logic drive signal to turn it on.

Brian.