SkyWave IDP 800 Series, Руководство по оборудованию, Страница: 32 / 102

IDP 800 Terminal Series - Hardware Guide
T209, Version 01 20 © SkyWave Proprietary
Table 15 Pass-Through Mode Timing Specifications
Parameter Specification
Baud Rate As per modem configuration
Maximum Jitter on Signals
(Modem to External) 10 µs
Maximum Jitter on Signals
(External to Modem) 10 µs
Table 16 Pass-Through Mode Power Consumption
Mode of Operation Current
Pass-Through 45 mA @ 12 volts
3.5 Serial Interfaces
3.5.1 RS-232
The RS-232 interface defaults to the following settings: 9600 bits/s, 1 start, 8 data, 1 stop
bit, no parity. The guaranteed minimum baud rate is configurable up to 250 kb/s.
The electrical characteristics of the interface are:
Parameter Minimum Typical Maximum Units
Serial Rx Input Voltage Range -25 - 25 V
Serial Rx Input Low Threshold
(Vcc 3.3 V) 0.6 - - V
Serial Rx Input High Threshold
(Vcc 3.3 V) - - 2.4 V
Serial Tx Low Output
(loaded with 3 k

to ground)
- - -3.7 V
Serial Tx High Output
(loaded with 3 k

to ground)
3.7 - - V
ESD Performance
RS-232 pins (Tx, Rx) - ±15 - kV