3 ] interface specifications – Denso BHT-7500 User Manual
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[ 3 ] Interface Specifications
Optical Interface
Synchronization:
Start-stop
Input signals:
RD
Output signals:
SD
Transmission speed:
115,200 bps max.
Direct-connect Interface
Synchronization:
Start-stop
Transmission speed:
115,200 bps max.
Signal level:
Conforms to the RS-232C interface
Pin assignment:
As shown below.
SD
RD
GND
Signal Input/Output
External
device
BHT
1
SG (GND)
Ground for signals
—
2
SD
Send data
→
3
RD
Receive data
←
Pin No.
Signal
Functions
Radio Interface (BHT-7500S only)
Frequency:
2.4 GHz band
Transmission speed:
1.6/0.8 Mbps
Modulation:
Spread Spectrum (Frequency Hopping)
Hopping channels:
15
Certificate:
FCC Part 15 in USA,
ETSI ETS300 328 and CE EMC-EEC in Europe
Radio Interface (BHT-7500W only)
Frequency:
2.4 GHz baud
Transmission speed:
11/5.5/2/1 Mbps
Modulation:
Spread Spectrum (Direct Sequence)
Channels:
13 (ETSI) ?? 14 ??
Certificate:
ETSI ETS300 328 and CE EMC-EEC in Europe