Kramer Electronics Ltd.
Remote controlling the Switchers
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 DB-9 pin numbers and their use.
Connect a DB-9 male plug and cable (screened or flat) into the LINK connector of the VS-55 family
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 DB-9 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.
DB-9 Pin Number Connected to:
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 5: Pin configuration of the “LINK” connector
TAKING CARE OF YOUR MACHINE
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.