A-18 Model 831 Specifications Model 831 Manual
Power Supply
Battery Operating Lifetime
Power Consumption
Batteries
4-AA (LR6) NiMH, Alkaline or Energizer L91 e
2
Lithium
cells (supplied with 2500 mAH NiMH cells).
Warning: Use of battery cells with greater than 1.5 Volt
specified rating can damage the instrument and void the
warranty.
External Power Powered through USB interface from computer or from
PSA029 AC to DC Power Adapter: 5 Volt 5% required.
Applying a voltage greater than specified can damage the
instrument and void the warranty.
External Power Power through I/O connector: 10 to 15.5 Vdc. Use cable
CBL154 for 426A12, CBL140 for PSA027, or Model 831-
INT Interface Unit
Table A-15 Power Supply Specifications
Battery Operating Life, Hours
4-AA (LR6) NiMH Cells > 8
Table A-16 Battery Operating Lifetime
Model 831 Operating State Watts mA @ 12 Volts mA @ 15 Volts
Running, Backlight Off, USB not connected 1.1 95 76
Running, Backlight Off, USB connected to PC 1.7 142 114
Running, Backlight Bright, USB connected to PC 2.9 238 190
Table A-17 Power Consumption
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