Hardware manual

EUROCOM-17-5xx 2 Installation
Hardware Manual 41
2.3.3 Watchdog
Period (J1401)
J1401 is to select between 100ms and 1.6s watchdog periods. J1401 is a
soldering jumper.
2.3.4 Flash EPROM
Programming
Voltage (J1601)
Table18: J1601 (Flash EPROM Programming Voltage)
2.3.5 Pin1
Connection of
EPROM
(J1605)
This jumper allows to select between EPROMs up to 4Mbit and 8Mbit.
2.3.6 EEPROM
Write Enable
(J1702)
J1702 enables/disables the hardware write protection for the serial
EEPROM. Only the upper 256B of the EEPROM can be write protected.
Table17: J1401 (Watchdog Period)
Jumper J1401 Function
open Watchdog period 1.6s
closed Watchdog period 100ms
Jumper J1601 Function
open No programming voltage on Flash EPROM
closed Apply +12V to Flash EPROM for programming
Table19: J1605 (Pin1 Connection of EPROM)
Jumper J1605 Function
1 - 2 Pin1 connected to +5V (< 8Mbit)
2 - 3 Pin1 connected to A19 (8Mbit)
Table20: J1702 (EEPROM Write Enable)
Jumper J1201 Function
open Write protection enabled
closed Write protection disabled