Elad,
According to the manual, that pedal calls for the Digitech PS200R (9V DC) power supply. It's available at their outlet store. Sells for about 25.00 US. That's pricey for a 9V DC PSU.
Usually the device will have markings near the power jack on the pedal, showing if the jack needs to be center-positive or center-negative. That's showing the polarity.
You can use virtually any 9v DC supply, as long as you have that polarity right. The power supply will also have markings showing the polarity.That's all there is to these things. The only other problem is that they sometimes use a different-sized plug.
If you have a universal DC adapter (they will usually have a switch to change voltage and polarity) you can usually find one of the plugs that will fit. If you have a supply with a plug that fits, but it has reverse polarity, you can simply cut that end off and wire it in reverse.
I've found that alot of home cordless phones have 9V DC supplies. I have several laying around, and I just use these with the proper-sized plug, wired in the correct polarity.
Mag...
