Appendix
A
Specifications
Communication
Internal radio:
Optional 2.4-GHz Air-I/O 500
frequency-hopping radio module;
8- to 9-mW output
Serial:
RS-232 communication via
PTC’s communication contacts
and the SC-921 DOS;
300 to 38,400 bps
Display
Type:
Twisted neumatic (TN)
black-on-white monochrome
LCD
Text mode:
2 lines x 12 characters
Electrical
Power:
950-mAhr lithium-ion
battery pack
Charge time:
3 to 4 hours via the SC-921 DOS
Backup power:
Super capacitor; 20 minutes of
RAM support
25
Summary of Contents for PTC-921 DOS
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Page 3: ...PTC 921 DOS User s Guide Part Number 23451 000 02 Release Date 5 27 98...
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Page 35: ...Processor Type V20H 9 8304 MHz Software Operating system Telxon ROM DOS MS DOS 5 0 27...
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