Communication Ports - Novatel OEM6 Integration Manual

Chapter 3 New for OEM7 – Hardware
V =3.4 V). This circuit will not compensate for the forward voltage change over tem-
FWD(D1)
perature (and the resulting brightness changes).
Figure 5: OEM7 Buffer for Driving High-Brightness LEDs from PV
Table 66: PV LED Driver Bill of Materials (critical components)
Designator
ON Semiconductor
Q1 Fairchild Semiconductor
Diodes Inc
D1 OSRAM

3.5.3 Communication Ports

The COM ports on OEM7 receivers (except COM1 on the OEM729) are CMOS-level I/O pins only.
These ports require the addition of an RS232 or RS422 transceiver to provide appropriate signal
levels. Most RS232 or RS422 transceivers will provide some ESD protection (for harsh envir-
onments, additional protection may be required).
COM1 on the OEM729 uses RS-232 protocol by default. This port can be changed to
RS-422 protocol using the SERIALPROTOCOL command.
OEM6 to OEM7 Integration Guide v1
Table 65: PV Pin Designation
OEM719
Connector P1701
PV 17
Manufacturer
OEM729 OEM7700
P1802 P2001
10 22
Manufacturer Part Number
MMBTA06LT3G
MMBTA06LT1G
MMBTA06-7-F
LT L29S-N1R2-25-Z
166