Omega OMB-DAQ-TC-RACK, Руководство пользователя

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OMB-DAQ-TC-RACK User's Guide Specifications
22
Digital input/output
Table 5. Digital input specifications
Parameter Specification
Number of inputs 8 channels
Configuration Fixed input
Input voltage range 0 V to +15 V
Input type CMOS (Schmitt trigger)
Input characteristics 100
kΩ pull-up resistor, 28.7 kΩ series resistor
Maximum input voltage range 0 V to +20 V max (power on/off, relative to IGND pins)
Pull-up configuration All pins pulled up to +5 V via individual
100 kΩ resistors using slide switch SW5.
SW5 default positions are on (pulled up.)
Transfer rate (software paced) 500 port reads per second typ
Input high voltage 1.3 V min, 2.2 V max
Input low voltage 1.5 V max, 0.6 V min
Schmitt trigger hysteresis 0.4 V min, 1.2 V max
Table 6. Digital output specifications
Parameter Specification
Number of outputs 32 channels, shared with alarms
Configuration Open drain output
Output characteristics 100
kΩ pull-up, open drain (DMOS transistor)
Pull-up configuration All pins pulled up to +5 V via individual 100
kΩ resistors using slide switches
SW1-SW4. The default positions for SW1-4 are on (pulled up.)
Transfer rate (software-paced) 500 port writes per second typ
Output voltage range 0 V to +5 V (internal 100
kΩ pull-up resistors connected to +5 V by default)
0 V to +15 V max (using external pull up resistor)
Off state leakage current 0.1 µA
Sink current capability 100 mA max (continuous) per output pin
DMOS transistor on-resistance
(drain to source) 4
Ω
Note 5: Ground pins labeled IGND are isolated from AGND and chassis ground.