User manual VARIZOOM VZ-WFF

[. . . ] The Transmitter has one main lens control knob (either a rotary knob or a slider) three toggle switches for power and setup, one rocker switch for camera on/off, one rotary selector switch for channel selection, two LED's, two connectors and one 9V battery. CAM(p. 7) 1: N/C 1: MOTOR ­ 2: POT CCW (-) END 2: POT CCW (-) END 3: POT WIPER 3: POT WIPER 4: POT CW (+) END 4: POT CW (+) END 5: MOTOR + Transmitter Specifications Dimensions/Weight: approx. 7" by 3½" by 3" / approx. Power Consumption: 30 Milliamps @ 7 to 15 VDC (9 milliamps in low power mode) RF Transmission: 902-928 MHZ Single frequency, part 15 FCC compliant: Channel Freq. . [. . . ] If so, try using a different channel on the video transmitter. If it is a Modulus, be sure to set the lowest channel you can use. · Check around for other sources of RF interference. Cell phones in use in the immediate vicinity can also be a problem. 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. This is due to insufficient power being supplied to the WFF. 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. do not set the units on adjacent channels, such as 5 & 6!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. [. . . ] 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. If two WFF units are being used at once, leave at least one unused channel between the two channels being used, i. e. do not set the units on adjacent channels, such as 5 & 6! [. . . ]