Trimble Inc. CCKCDPD Benutzerhandbuch
A Specifications
7 0 CrossCheck CDPD Mobile Unit Manual
Table A.13
Discrete Inputs: IP0 to IP3
Item
Specification
Input Logic High
Open circuit or V
in
> 2.4 VDC
Input Logic Low
V
in
< 0.6 VDC
The inputs must remain in either state for at least
500 milliseconds before the CrossCheck CDPD detects
the input.
500 milliseconds before the CrossCheck CDPD detects
the input.
Input Current
I
in
± 3 mA
Input Protection
Protected up to at least V
Batt
continuous
Table A.14
Pulse Counter Inputs
Item
Specification
Input Logic High
Open circuit or V
in
> 2.4 VDC
Input Logic Low
V
in
< 0.6 VDC
Input Current
I
in
±3 mA
Minimum Pulse Width
500 microseconds
Input Protection
Protected up to at least V
Batt
continuous
Table A.15
Discrete Outputs: XP0 to XP2
Item
Specification
Output Inactive
15 K
Ω
tied to V
vehicle-battery
V
out
depending on load
Output Active
Tied to ground through a saturated bipolar junction
transistor, V
transistor, V
out
< 1.5 VDC @ 200 mA;
V
out
< 0.5 VDC @ 10 mA
Output Sink Current Capability
Up to 200 mA
Output Protection
Protected against shorts to ground