User manual VARIZOOM VZ-WFF

[. . . ] 4) 1: GROUND 2: RF SHUTDOWN (SHORT TO GROUND) 3: DATA OUT RECEIVER FRONT PWR (p. 5 Transmitter Controls Control Knob: Each Transmitter has one main control knob, either a rotary knob or a linear slider. Once the lens drive motor has been calibrated to the lens at the Receiver/Amplifier, end-to-end travel of the knob moves the lens through the range set during calibration. The travel can be set to be the entire range of lens movement or between two intermediate points, as desired by the operator. [. . . ] · If you are using a video transmitter, turn it off and see if you get a good signal. When I switch the calibrate switch towards one of the knobs or when I try to make a fast move the motor moves in short jerks until it reaches position. When the WFF tries to move the motor to position at full speed it can draw up to 3 amps of current. 12V accessory outputs from cameras, such as an ARRI 435, are limited to less current. When the WFF tries to move the motor the power shuts down to prevent burnout, which causes the WFF to shut down. This in turn causes the power draw to drop off, which allows the accessory power to rise back up and if the cycle repeats relay. Other cameras, such as the Moviecam Compact, require a momentary contact closure to start the camera and another momentary closure to stop the camera. This switch is set to CONT for continuous operation cameras and MOM for momentary operation cameras. RUN/STOP Switch: This switch is used to activate the relay in the Receiver/Amplifier that is used to put a film or video camera in the run or stop mode. CHANNEL Select Switch: This switch is used to select one of the eight frequencies in the 900 MHZ range for operation. The selector switch must be set to the same channel on both the Transmitter and Receiver/Amplifier. Use the highest number that works in order to minimize interference from video transmitters. If two WFF units are being used at once, leave at least one unused channel between the two channels being used, i. e. Also, do not use channels 3 & 7 simultaneously, as you may get interference. pg. 7 Transmitter Indicators POWER LED: The red/green power LED has four modes of operation: Green: Unit on and transmitting, battery voltage OK. Flashing Green: The unit has not been used for more than 15 minutes, so the RF transmitter has been turned off to save power. Changing any control or moving the knob turns the transmitter back on within 15 /1000 of a second. Red: The LED will turn red approximately 1 hour before the 9V battery needs replacement. Flashing Red: The LED will begin flashing red when the battery voltage has gotten so low the transmitter can no longer function accurately. RUN/STOP LED: The blue run/stop LED flashes when the camera run/stop switch is in the run position. Warranty VariZoom warranties the WFF for manufacturing defects or component failure under normal operation for 1 year from the date of purchase. VariZoom will pay shipping UPS ground within the United States to return the unit after repairs. Transmitter Connectors POWER IN Connector: This 2-pin connector is provided to allow the WFF Transmitter to be powered by an external battery. 17 Other Things to Know Interference from Video Transmitters: UHF video transmitters, such as the Modulus 2000 or 3000, tend to broadcast on other frequencies than the intended frequency. There are several things you can do to prevent this from being a problem: 1. [. . . ] When used this way, the Receiver/Amplifier becomes a direct analog servo control system (like a Preston "Micro Force"). Receiver/Amplifier Controls ON/OFF Switch: This switch controls power to the Receiver/Amplifier. CHANNEL Select Switch: This switch is used to select one of the eight frequencies in the 900 MHZ range for operation. The selector switch must be set to the same channel on both the Transmitter and Receiver/Amplifier. As a general rule, use the highest number that works in order to minimize interference from video transmitters. [. . . ]