Motorola VRM 500 Owners And Installation Manual page 6

Vehicular radio modem
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Performance Specifications
&
Model Complements
REGULATORY STANDARDS
FCC
FIXED-END EQUIPMENT REQUIREMENTS
Motorola DataTAC infrastructure
DIAGNOSTICS
Diagnostics
Meets FCC Part 15, Subpart J, Class B emissions for computing
devices. Meets applicable FCC Part 90 requirements when
operated with specified mobile radios.
Motorola Data System Station DSS II or equivalent
Motorola Radio Network Controller RNC6000 or equivalent
Power On Self-Test (POST)
Manufacturing diagnostics to assist with component level
repair (available only to Motorola service depots). All
diagnostic routines may be accessed over the DTE serial
interface port
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DATA TERMINAL EQUIPMENT (DTE) INTERFACE PORT
Signal levels
Signals
Data rate
Synchronization
Flow control
Data format
Data Presentation
Maximum message size
Message buffers
RS-232-C (±12
V)
or CMOS (0-5
V)
DCD, RXD, TXD, DTR, DSR, RTS, CTS, RI, and GND (RI
and DCD not included in CMOS connector)
1200, 2400 (default), 4800, or 9600 bps programmable
Asynchronous
No control, XON-XOFF (escape sequence), or
RTS-CTS (default) programmable
8-bit, no parity, one-stop bit
Transparent (Hayes® AT commands), Buffered Handshake or
Native mode
See radio data system characteristics
16-kbyte store and forward, bidirectional, with buffer full
notification
AUX INTERFACE (requires special application firmware)
Signals
Other specifications
vi
RXD, TXD, DTR, DSR, RTS, CTS, GND, -BAT and +BA
T
(13.8±20%
V
DC pass-through)
See DTE Interface port above
68P02943C70

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