Kramer Electronics VS-55YC - Manual (Page 13)

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All the switchers of the VS-55 family may be contact-closure remote controlled via the “ LINK” connector.
The distance between the switcher and the remote contact-closure assembly should preferably no be more
than 10 meters. Use table 5 below for identification of the 9-pin D-sub pin numbers and their use.
Connect a 9-pin D-sub male plug and cable (screened or flat) into the LINK connector of the VS-55
family switcher.
Identify the wires corresponding to the relevant pins in table 5.
Pin #3 which is +8V (VCC) should be the common line of the contact closure assembly.
Momentarily touching one of the wires connected to pins 5, 6, 7, 8, 9 of the
connector will activate the corresponding switch. For example – forming a momentary
connection between pin #7 wire to the VCC wire (pin #3) will force the switcher to activate
switch #4. Connecting pin #9 wire momentarily to pin #3 wire will activate switch #2.
Be careful not to short pin #3 (VCC) and pin #2 (ground) as it may blow the fuse of the machine.
Connecting several switchers and their LINK connectors in parallel will enable the user to activate
all interconnected switchers with one momentary connection.
9-pin D-sub Pin Number Connected to:
2 Ground
3 VCC = 8V
5 Switch # 1
6 Switch # 5
7 Switch # 4
8 Switch # 3
9 Switch # 2
1 Not Connected
4 Not Connected
Table : Pin Configuration of the “ LINK” Connector
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Do not locate your machine in an environment where it is susceptible to dust or
moisture. Both of these may damage the electronics, and cause erratic operation or
failure.
Do not locate your machine where temperature and humidity may be excessive.
Do not clean your machine with abrasives or strong cleaners. Doing so may remove or
damage the finish, or may allow moisture to build up.
Take care not to allow dust or particles to build up inside unused or open connectors.