Epson Multi-mode Data Controller MFJ-1278B User Manual
Page 313
MFJ-1278B MULTI-MODE HARDWARE
NOTE:
*
When JMP23 is shorted, it will RESET the MFJ-1278B. This means that all
parameters will be reset to the default values. This is the same as removing the bbRAM
battery except it is much quicker.
**
MFJ offers an optional Real-time clock module (MFJ-43) that can be installed on
the MFJ-1278B mother board. This clock keep the MFJ-1278B clock running all the time.
You will not have to reset the clock everytime you turn the MFJ-1278B on.
***
When these jumpers (JMP E, JMP F, JMP G, JMP H) are removed the MFJ-1278B
will operate European RTTY tone when the VB modem is selected. All four jumpers must
be removed to operate European RTTY.
PARALLEL PRINTER PORT PIN FUNCTION,J12
The MFJ-1278B provides the user with a built-in Parallel Printer Port. The user can use the
built-in printer port to print received text or graphics. The built-in printer port is compatble
with most Epson and IBM parallel printers. Below in Table 8-2 is the pin out of the Parallel
Printer Port, J12:
Table 8-2 Parallel Port Pin Out
Printer Port Pin #
Pin Function
1
Strobe
2
Data Bit 1
3
Data Bit 2
4
Data Bit 3
5
Data Bit 4
6
Data Bit 5
7
Data Bit 6
8
Data Bit 7
9
Data Bit 8
10
Acknowledge
11
Busy
12 thru 17
No connection
18 thru 25
Ground