Service manual

Dubber Tally (Opto-isolated Reader Inputs)

Location: Rear of Recorder Interface Unit

Mating connector required: 50-way D type male

Tallies must be connected via a resistor of appropriate value to limit current to less than

10mA, e.g. if tally signal from machine is active high 5V it would be connected to the + PIN

via a 470 ohm resistor. Typical connection schemes:

1-24

25-48

PIN PIN PIN PIN

Dubber Tally 1 2 3 Dubber Tally 25 2 3

Dubber Tally 2 4 5 Dubber Tally 26 4 5

Dubber Tally 3 6 7 Dubber Tally 27 6 7

Dubber Tally 4 8 9 Dubber Tally 28 8 9

Dubber Tally 5 10 11 Dubber Tally 29 10 11

Dubber Tally 6 12 13 Dubber Tally 30 12 13

Dubber Tally 7 14 15 Dubber Tally 31 14 15

Dubber Tally 8 16 17 Dubber Tally 32 16 17

Dubber Tally 9 18 19 Dubber Tally 33 18 19

Dubber Tally 10 20 21 Dubber Tally 34 20 21

Dubber Tally 11 22 23 Dubber Tally 35 22 23

Dubber Tally 12 24 25 Dubber Tally 36 24 25

Dubber Tally 13 26 27 Dubber Tally 37 26 27

Dubber Tally 14 28 29 Dubber Tally 38 28 29

Dubber Tally 15 30 31 Dubber Tally 39 30 31

Dubber Tally 16 32 33 Dubber Tally 40 32 33

Dubber Tally 17 34 35 Dubber Tally 41 34 35

Dubber Tally 18 36 37 Dubber Tally 42 36 37

Dubber Tally 19 38 39 Dubber Tally 43 38 39

Dubber Tally 20 40 41 Dubber Tally 44 40 41

Dubber Tally 21 42 43 Dubber Tally 45 42 43

Dubber Tally 22 44 45 Dubber Tally 46 44 45

Dubber Tally 23 46 47 Dubber Tally 47 46 47

Dubber Tally 24 48 49 Dubber Tally 48 48 49

Digital Service Manual

Issue 3 Page 56

Opto-isolated inputs

Rated at 10mA

VDC

R 10mA

28 VDC

2.7K ohms

5VDC

MAGNATECH

DUBBER

MULTITRACK