Appendix
A
Specifications
Communication
Host interfaces
DB-9 serial port:
Built-in one- or two-way 9-pin
RS-232 port, up to 38.4K bps
async
RJ-41 serial port:
(Optional) Built-in one- or two-
way RJ-41 serial port
Electrical
Charging time
Fast charger:
4 hours
Trickle charger:
12 to 16 hours
MRC-921 input
voltage requirement:
12 VDC 800 mA
Environmental
Operating
50 to 110 degrees F
temperature:
(10 to 43 degrees C)
Storage
−
20 to 140 degrees F
temperature:
(
−
29 to 60 degrees C)
Relative humidity:
95% noncondensing
Physical
Capacity:
One PTC-921 and one spare
battery pack
Length:
6.8 in/17.3 cm
Width:
5.2 in/13.2 cm
27
