Callin' all PAT9000 experts/users

kiphartzell

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Okay, I am having to debug my testbench platform......

I am trying to use the Aux Control Interface (P57) to attach a encoder wheel. Has anyone try this or any other external controller? It seems straight forward, but I haven't been able to get it to work.

First, I had to make my own cable since I do not have the factory issued "Trak-Ball" adaptor harness (pn A038994-01). Looking at the PAT9000 manual chapters, 5,9 &11, it appears I only need to hook up 5 pins on P57; +5v,GND, HDIR, HCLK, & SW Enable. The first four go directly to the encoder wheel and the switch enable pin needs to be driven to +5v to disable the internal Joystick. On the Joystick Interface card, I also have set SW1 to 'On'. When my cable is plugged in, the internal joystick is disable, but the encoder wheel does nothing so I am guessing the HDIR & HCLK signals are not getting routed correctly through the PAT9000 multiplexing to the DUT. I have verified +5v gets to the encoder wheel and that it is a working wheel (on an actual Tempest machine).

Before trudging through the PAT9000 schematics, is there anything glaring I might be missing? Maybe something that needs calibrating or as easy as a missing switch setting, Duh?!?

Thanks.

I haven't tried scoping the HDIR or HCLK to see what they look like at the P57 connector, so I'll try that next.
 
Is it the Joystick interface card, or the Switch interface card that should have the jumpers set.

Sounds to me like SW1 ans SW2 need to be set, and the +5 goes to the enable on the plug. Thus turning off the Joystick control card.

Still reading through all this.
 
Kevin,

As you know, the PAT manual is not well written, but as best as I can interpret, it seems P57 is affected by the Joystick Interface card switches while P58 & P59 connectors use the Switch Interface 1 card switches. This is from page 159. BTW, I have tried setting all Joystick Intf card switches "on" and this did not make a different in the encoder working . Also the bottom of page 35 is where it describes how to handle the "switch enable" pin on P57. All I did was to wrap the +5v coming out on pin 10 back into pin 9 to supply +5v to Switch Enable (this is where it would be nice to see what the factory trak-ball harness does). Feeding +5v back into pin 9 SW EN does indeed disable the internal joystick.
 
Yeah they do that to enable and disable when the actual plug is in.

I may have to play with this on mine this weekend.


Kevin,

As you know, the PAT manual is not well written, but as best as I can interpret, it seems P57 is affected by the Joystick Interface card switches while P58 & P59 connectors use the Switch Interface 1 card switches. This is from page 159. BTW, I have tried setting all Joystick Intf card switches "on" and this did not make a different in the encoder working . Also the bottom of page 35 is where it describes how to handle the "switch enable" pin on P57. All I did was to wrap the +5v coming out on pin 10 back into pin 9 to supply +5v to Switch Enable (this is where it would be nice to see what the factory trak-ball harness does). Feeding +5v back into pin 9 SW EN does indeed disable the internal joystick.
 
Okay, I have this working now. Actually, it is good to take a break sometimes and come back to it with a fresh look. I discovered the I transposed pin 1 & pin 3 of the connector cable I whipped up in haste. I was driving Vclk instead of Hclk. Made the swap and now it is humming (literally for all you Tempest folks). SW Enable pin needs +5v which is easy with just wrapping +5 on P57 back into the SW EN, then the joystick card needs SW1 on. Real easy to do when you are look at things straight.
 
Glad you got it figured out. I hadn't had a chance to look at mine to do that yet. I've been dealing with the insulation guys on my shop. Next week more concrete and walls.

One of these days I'll get back to my projects :)
 
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