OHM-Stat CT-8900 Owner's Manual page 71

Can we use a USB cord?
Yes. You can purchase a RS-232 to USB converter for the card reader for under $35.00. 15 feet is the maximum length for a USB
cable without an extender.
Can we test constant monitor wrist straps to see if they actually drain a charge from your body?
Yes you can. Merely insert the 3.5 mm plug into the 3.5 mm jack and press the test button.
Static Solutions CT-8900 Combo Tester Instructions 71 7/22/2009