Epson Multi-mode Data Controller MFJ-1278B Benutzerhandbuch
MFJ-1278B MULTI-MODE HARDWARE
Table 8-1: Jumper Function (Cont.)
Jumper #
Position
Function
JMP16
Pin 1 & 2
Without multi-gray levels
Pin 1 & 3 (default)
With multi-gray levels
Pin 2 & 4 (default)
With multi-gray levels
JMP17
Pin1 & 2
2400 baud ext. modem clock
Pin 2 & 3 (default)
9600 baud ext. modem clock
JMP18
Pin 1 & 2 (default)
Enable 19.2K baud termial
Disable 300 baud terminal
Pin 2 & 3
Enable 300 baud termial
Disable 19.2K baud terminal
JMP19
Outside pair(default)
Enable 32K mailbox RAM
Middle pair
Enable 128K mailbox RAM
Inside pair
Enable 512K mailbox RAM
JMP20
ON (default)
512K mailbox RAM installed
OFF
32K or 128K mailbox RAM
JMP21
Pin 1 & 2
154 KHz to multi-level PCB
Pin 2 & 3 (default)
307 KHz to multi-level PCB
JMP22
Pin 1 & 2
Enable CW Grid Block Keying
Pin 2 & 3 (default)
Enable CW Direct Keying
JMP23
ON
Enable memory RESET
OFF (default)
Normal operation
JMP24
Pin 1 & 2 (default)
1 Megabit firmware EPROM
Pin 2 & 3
512K bit firmware EPROM
JMP25
Pin 1 & 2 (default)
Normal Demodulator operation
Pin 2 & 3
Demodulator Bypass
JMP26*
Pin 1 & 2 (default)
Normal +5Vb bbRAM operation
Pin 2 & 3
Real-time clock installed