### 4e ISA Host Adapter Specifications

Power Requirements
| EIA-232 Model | EIA-422 Model
+5 volts +/- 5% | 2.0 amps max | +5 VDC: 2.0 amps plus 60 mA per channel under load
+12 volts +/- 5% | 0.185 amps max
-12 volts +/- 5% | 0.185 amps max
Environmental
Ambient temperature | 10 to 55 degrees C
Relative humidity | 5% to 90%
Air Movement | 30 CFM forced
Altitude | 0 to 12,000 feet
Serial Interface Surge Suppression (option)
Threshold voltage: | 13 volts (input signals)
Response time | < 10 nS
Mechanical
Length | 8.52 inches
Width | .5 inches
Height | 4.8 inches
Weight | 4.5 ounces

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