Epson Multi-mode Data Controller MFJ-1278B Benutzerhandbuch
MFJ-1278B MULTI-MODE APPENDIX G: JUMPER FUNCTIONS
Table G-1: Jumper Function (Cont.)
Jumper #
Position
Function
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
512K mailbox RAM installed
OFF (default)
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
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
JMPA
ON
Disable multi-gray levels PCB
OFF (default)
Enable multi-gray levels PCB
JMPB
ON (default)
On board transmit low tone
OFF
out board transmit low tone
JMPC
ON
Enable external DCD
OFF (default)
Disable external DCD
JMPD
NOT used
JMPE***
ON (default)
Disable Low Tone RTTY Demod
OFF
Enable Low Tone RTTY Demod