TYPHOON800 rfsolutions.ltd, TYPHOON800 Datasheet - Page 6

• Manufacturer Part Number: TYPHOON800
• Description: Rs232/485 Radio Modem
• Manufacturer: rfsolutions.ltd

DS510-1 Aug 2008
1.5.3 RS485 Serial Link
1.5.4 RS232/485 Slew Rate
RS485 connections are made using both TB1 and TB2 or by inserting a DB9 serial cable into J5.
When using the RF modem in a noisy environment it may
beneficial to limit the slew rate of the RS232 / RS485
interface to improve the noise immunity of the wired link.
The slew rate is set by a jumper on pins 5-6 of J4.
Pin
Pin
1
2
3
2
8
5
3
7
Name
GND
TXB
TXA
Name
RXB
RXA
GND
TXA
TXB
RS232/485 R
Description
Ground, 0Vdc
Transmit data ‘-‘
From the host
Transmit data ‘+’
From the host
Description
Receive data ‘-’
Receive data ‘+’
Ground
Transmit data ‘+’
Transmit data ‘-’
©2008 Reg. No. 227 4001, ENGLAND
Additional Detail
To the host
To the host
0V
From the host
From the host
ADIO
M
ODEM
Pin
1
2
3
J4, 5-6
Fitted
Not Fitted
Name
GND
RXB
RXA
Operation
Limit Slew
Rate
Normal
Operation
Description
Ground, 0Vdc
Receive data ‘-‘
To the host
Receive data ‘+’
To the host
Page 6
TYPHOON 800
J4
2 4 6
1 3 5
Jumper link
1
TB2
Cable entry
2
3