Videoswitch VT - Manual (Page 8)

VT Series 2 User Manual Page 8
Videoswitch
VT601c.doc
4. Transmitter Operation
4.1 Pan and Tilt
The joystick is used for pan and tilt control of the camera. Note that the joystick must be in its central
position when the transmitter is turned on.
AC Receivers
Movement of the joystick by a small amount in any direction causes the pan and tilt head to move
accordingly. The amount that the joystick is moved has no effect on the operation of the head.
DC Receivers
When the transmitter is used with a DC receiver (e.g. VR-5) providing variable speed control, then the
amount the joystick is moved in a particular direction will control the speed at which the pan and tilt head
moves.
4.2 Zoom, Iris and Focus
Six keys are provided for the control of lens functions.
4.2.1 Zoom
These keys control the zoom in and out of the currently selected camera. Both the zoom speed (section
7.3) and the polarity (section 7.6) may be set.
4.2.2 Iris
If the lens uses auto-iris, these keys are not used. If the lens has manual iris control, then these keys open
and close the iris of the currently selected camera. Both the iris speed (section 7.4) and the polarity
(section 7.7) may be set.
4.2.3 Focus
These keys control the focus in and out of the currently selected camera. Both the focus speed (section
7.5) and the polarity (section 7.8) may be set.
4.3 Auxiliary Functions
Five auxiliary functions may be controlled from the transmitter (the VR-3 supports only AUX1 and
AUX3). The auxiliary keys all have predesignated functions, but may be used to control any other devices
(within the power rating of the relays in the receiver).
4.3.1 AUX 1 (Lamp)
This is a latched function which operates a relay in the receiver that may be used to control a lamp or any
other device.
4.3.2 AUX 2 (Preset Alarms)
This latched function is used to switch the alarm detection on and off where an alarm preset option is
fitted. If an alarm preset is not being used, the relay in the receiver operated by this function may be used
to control any device.
4.3.3 AUX 3 & 4 (Wipe/Wash)
A single key is used to control two functions, wipe and wash. The wipe relay is latched and toggles on and
off each time the keys is pressed. If the key is held on for more than a second, the wash relay will operate
until the key is released again. If wash and wipe are not required, the relays may be used to control any
other device.
4.3.4 AUX 5 (Autopan)
This is a latched function which operates a relay in the receiver. It is typically used to control an autopan
module, but may be used to operate any other device. Note that when left or right panning is performed, if
a preset is selected or if an alarm occurs, this function is cancelled.