If you find yourself having trouble keeping the CS61200 turned off while in your tool bag. Than this simple fix may be the trick you’ve been looking for. In the below picture you’ll see the CS61200 and you’ll notice something a little different. One of our customers attached two o-rings to the front of the unit guarding the on/off button. This keeps the unit from turning itself on while in your tool bag.
On many of our Sperry meters there is a hold button that will freeze the screen, holding the information of the last reading you took. When this option is in use, there is a small letter “H” displayed on the screen. This allows you to write down the reading without having to hold the test leads in place.
If you’re having trouble taking readings and the readings on the screen do not change, look for the H. This may be your problem. In other cases it’s due to a low battery, which causes the meter to give faulty readings.
Each meter has a specific range for accuracy; this is always listed in the unit’s manual. DC voltage will always have a better accuracy rating because its electrical wave form does not fluctuate like AC voltage.