MODEL AT-25 PORTABLE SHOT DURATION TIMER

B. SPECIFICATIONS:

• Basic Accuracy. . . = 2% + 1 digit
• Range. . . . . . . . . . = .06 to 19.99 seconds
• Input Signal. . . . . . = 1 to 20 V AC/DC  (40V 2 seconds max)
• Input Load. . . . . . . = 50 10W
• Auto Reset Time. .  = 1 second
• Temperature. . . . .  = Operating 40 to 115ºF  (5 to 46ºC)
• DPM. . . . . . . . . . . = 3 1/2 LCD .5 inch (12.5mm) digits with low Battery indicator
• Power. . . . . . . . . . = 9V Alkaline or Ni-Cad battery
• Size LxWxH. . . . . = 5.75 x 3.6 x 1.9 inches (146.1 x 91.4 x 84.8 mm)
• Weight. . . . . . . . . = 8 oz. (226g)
• Switch AT-25 Power Switch to ON. DPM will display any random number when power is first applied. Press Manual reset and DPM will display 0.00 + .01.
• Check DPM upper left corner for low battery symbol. Timer is not accurate when low battery symbol is visible. To change battery, Turn power off. Rear of AT-25 case is battery compartment, push in on lid and slide lid off. Extract 9V battery and unclip battery leads. Install new battery in reverse manner. Repeat step 1.
• With test leads plugged into AT-25 panel jacks, clip one lead each to copper pad or plate of head and tail stock, or on coils.clip one lead each to input and output buss bar or lugnut from coil of MPI equipment under test. Parts should be removed from between Head and Tail stock.
• Operate MPI equipment at your  normal output current setting. Your amp meter will not register current except on coil shots, which is normal. You may have to increase output current setting when monitoring coil shots to start AT-25 Timer.
• AT-25 will display your shot time until your next shot is taken. Allow 1 second between shot times for automatic reset. You do not need to press manual reset between shots.
• Manual time runs while push button is pressed, stops when released.
• Manual reset zeros DPM when push button is pressed.
• AT-25 input is bipolar. Input leads can be reversed.