VTI Instruments Corp.
36
EX1200-1538: Digital I/O and Analog Output Operation
WARNING
The absolute maximum voltage for digital counter channel’s is limited to 25 V. Beyond 25 V, the
EX1200-1538 will be permanently damaged. Additionally, the inputs should never be driven
below the ground potential or damage may occur.
The DIO channels allow for the maximum voltage of 60 V per channel. When configured as a
digital output channel, the current flowing in either direction should be limited to 50 mA.
Analog outputs have internal open and short circuit protected. Any external voltage applied should
not exceed 25 V irrespective of whether channel enabled or not.