Kramer RC-21TB User Manual

The Kramer RC-21TB 2-Button Contact Closure Switch
Congratulations on purchasing your Kramer RC-21TB single slot wall plate insert 2-Button
Contact Closure Switch which is ideal for using as a means of remote control in boardrooms
and conference rooms. It can be used with the VP−81SID step−in switcher or any other
Kramer product with contact closure control.
The RC-21TB front panel has two momentary switching buttons. On the rear are remote
momentary contact closure terminal block connectors that connect to a remote switch terminal
block connector. When the button is pressed it lights and the switch is made.
Figure 1 shows the RC-21TB front panel and the pinout on the rear:
Figure 1: RC-21TB Front Panel and Rear
To install the front panel button labels:
1. Unscrew the two spacers, remove the washers on the rear side of the insert and push
out the two studs holding the front panel, see
Figure 2: Removing the Front Panel
2. Separate the PC board from the front panel.
3. Remove the required labels from the supplied button label sheet.
4. Hold the button cap so that it is oriented as shown in
and lower sides.
Figure 2.
3, with the "wings" at the top
Figure
O N
Figure 3: Button Orientation
5. Insert the label (properly oriented) inside the cap.
6. Retaining the orientation, place the button cap with the label over the buttons, see
Figure 4.
Figure 4: Placing the Button Cap
7. Place the front plate over the buttons.
8. Reassemble the PC board
Note: Center the buttons in the opening before tightening the studs to prevent the buttons
from sticking during reassembly.
9. Insert the studs through the front panel. On the rear side of the insert place the washers
and then the spacers and tighten.
The RC-21TB can remotely switch the inputs of a machine via its remote contact closure
terminal blocks.
In the example illustrated in Figure 5 two SID-H HDMI Step In Commander units are
connected to RC-21TB.
Figure 5: RC-21TB connected to two SID-H Units