User Guide

Installation
22
AXB-PT15 PosiTrack Camera Controller
The outputs use Pulse Width Modulation (PWM) for speed control. The output voltage values are ±
6 VDC or ±12 VDC. Speed is controlled by varying the duty cycle of the output.
Servomotor driven outputs are intended to drive servo-type motors only. The outputs have very low
current (milliampere range) capability. DO NOT attempt to drive conventional motors with these
outputs or you may damage the output drivers. If you are not sure about the motor type, refer to the
Specifications section on page 2 for more information.
Pan Characteristics
The pan drive has a maximum pan range of ± 179° (358° total). Pan travel is capable of being
limited to a restricted range around the center of pan travel by software limits adjustable by the
programmer/end user. Pan limits refer to the horizontal range of motion available to the PosiTrack
unit. These limits are set via the Axcess program. The center position marks the center of the range.
Lens Control DB-15 HD Connector Pinouts for Servomotor Mode
Pin
PosiTrack DB-15 HD
connector functions
Direction Lens function
1 +12 VDC Output Motor Power (see following note)
2 GND Output Lens common
3 Zoom-drive Output Zoom motor
4 Focus-drive Output Focus motor
5 Iris-drive Output Iris motor
6 Zoom-speed/position Output Zoom-positional/speed mode
7 Focus-speed/position Output Focus-positional/speed mode
8 Iris-local/auto Output Iris-local/auto select
9 Iris-speed/position Output Iris-positional/speed mode
10 VREF-A (+7.5V) Input VREF-A (+7.5 V). The reference voltage must be
present to operate correctly in servomotor mode.
11 VREF-B (+2.5 V) Input VREF-B (+2.5 V). The reference voltage must be
present to operate correctly in servomotor mode.
12 POT-REF+ (+5 VDC) Output POT-high side
13 POT-REF- (GND) Output POT-low side
14 Zoom-wiper (0-5 VDC) Input Zoom-POT wiper
15 Focus-wiper (0-5 VDC) Input Focus-POT wiper
Pin 1 is not required if the lens is powered independently. This feature is controlled by
the AMX/CAM switch on the connector panel. Pins 12-15 are required for Speed
mode but are not required for Positional mode.