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 8-2Parallel 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

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Image 313
Epson MFJ-1278B manual Parallel Printer Port PIN FUNCTION,J12, Printer Port Pin # Pin Function