Datavideo HS-2850 Instruction Manual page 70

Appendix 2
The HS-2850 has a D-sub 25 pin female tally output
port. These connections provide bi-colour tally
information to a number of other Datavideo
products, such as the ITC-100 eight channel talkback
system and the TLM range of LCD Monitors.
These ports are open collector ports and as such do
not provide power to tally light circuits.
Pin No. Signal name
1 Program 1
2 Program 2
3 Program 3
4 Program 4
5 Program 5
6 Program 6
7 Program 7
8 Program 8
9 Program 9
10 Program 10
11 Program 11
12 Program 12
13 GND
14 Preset 1
15 Preset 2
16 Preset 3
17 Preset 4
18 Preset 5
19 Preset 6
20 Preset 7
21 Preset 8
22 Preset 9
23 Preset 10
24 Preset 11
25 Preset 12
Tally Outputs
The pin outputs are defined as follows:
Input/Output
Open collector output
Open collector output
Open collector output
Open collector output
Open collector output
Open collector output
Open collector output
Open collector output
Open collector output
Open collector output
Open collector output
Open collector output
Ground
Open collector output
Open collector output
Open collector output
Open collector output
Open collector output
Open collector output
Open collector output
Open collector output
Open collector output
Open collector output
Open collector output
Open collector output
Dielectric strength: Max. DC 24V
Current:
Signal Description
Tally output of input video Program 1
Tally output of input video Program 2
Tally output of input video Program 3
Tally output of input video Program 4
Tally output of input video Program 5
Tally output of input video Program 6
Tally output of input video Program 7
Tally output of input video Program 8
Tally output of input video Program 9
Tally output of input video Program 10
Tally output of input video Program 11
Tally output of input video Program 12
Ground
Tally output of input video Preset 1
Tally output of input video Preset 2
Tally output of input video Preset 3
Tally output of input video Preset 4
Tally output of input video Preset 5
Tally output of input video Preset 6
Tally output of input video Preset 7
Tally output of input video Preset 8
Tally output of input video Preset 9
Tally output of input video Preset 10
Tally output of input video Preset 11
Tally output of input video Preset 12
70
Max. 50mA