MSC-HD42L Product Manual
6.2 External Button Control Pinout
This device utilizes unused pins on the D9 serial connector to provide an external button control interface. By
default it is factory configured for active low (ground) signaling. Button presses are indicated by grounding the
applicable button signal line. If active high signaling is desired, please specify this during purchase, in which
case signal lines are brought high (+3.3V or +5V) to indicate a button press. However, active low is the
recommended option.
The MSC-HD42L is configured to control the source of a single output (destination 1 by default), equivalent to
the button interface on the MSC-HD41L.
Pin # Name Function
4
BTN1 Source 1
8
BTN2 Source 2
7
BTN3 Source 3
6
BTN4 Source 4
5
GND
Ground
DE-9 Pinout
NOTE:
Button interface signal levels depend on whether the device was factory configured for
active low
or
active high
signaling. If unsure what the configuration is, check the voltage level of the button pins in
reference to the ground pin. If the voltage is +3.3V then it is configured for
active low
, if it measures 0V then it
is
active high
.
Button interface signals
•
Active Low:
Connect button pins to ground to activate them.
•
Active High:
An external power supply is required which generates a +3.3V to 5V level, which is
connected to the button pins to activate them. The external power supply ground is connected to the
ground pin.
WARNING:
Care must be taken with Active High mode not to exceed 5V on the button
signal pins or damage may result.
6.3 Glossary
•
Active Routing
– The current routing state of a Router's Matrix.
•
Destination
– A Video or Audio destination (output from a Router device). Numbered starting from 1.
•
Input
– Synonymous with Source.
•
IP
– Stands for Internet Protocol. Base protocol of the Internet which can also be used on LANs. This
protocol uses 4 byte addresses (IPv4) written in "quad dot" format, which is four decimal numbers
separated by periods (192.168.2.60 for example).
•
LAN
– Stands for Local Area Network. Refers to a single local Ethernet network, usually consisting of
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