Dubuque, IA Free Moderated Classifieds Site > OLD ADS FROM PREVIOUS YEARS
> 2006
> November
> Sencore universal video analyzer model va 62
Sencore universal video analyzer model va 62
* The VA62 consists of five general parts: 1.) The video pattern generator, 2.) The microprocessor-controlled RF-IF generator, 3.) The drive signal generator, 4.) The digital meter, and 5.) Special analyzing tests. All are part of a single, self-contained unit.
* The digital video pattern generator develops signals for use by the other sections. All signals are phase-locked to each other, allowing individual signals to be substituted one at a time while the rest of the circuits respond to a reference input signal. Five conventional video patterns, three special analyzing patterns, plus the ability to externally modulate the generator ensure the correct reference pattern to troubleshoot any video problem. Interlace or VIR may be added to any pattern for applications in special circuits.
* The RF generator produces 142 channels, covering every possible VHF, UHF, or cable channel. The cable channels may be generated at FCC frequencies or programmed to match any local cable system’s carrier offset frequencies for a dynamic tuner test. The RF generator is fully modulated with video information and may be modulated with frequency modulated (FM) audio as well, to test the audio system. A single microprocessor-compensated attenuator provides flat output over all 142 channels.
* The IF generator provides a crystal-controlled, fully modulated carrier or a microprocessor-controlled adjustable frequency generator to troubleshoot or align any IF stage. Special trap-setting signals allow fast and accurate trap alignment without the need of a oscilloscope.
* The drive signals provide a known-good signal that may be injected into any tube, transistor, or integrated circuit stage. In addition, special drive signals are available for color or VCR servicing. The drive signals may be injected into any stage without the need of disconnecting components or disabling signals already in the circuit. Special floating grounds prevent damage or interaction due to ground loops.
* The microprocessor-controlled, digital meter provides the ability to monitor any of the drive signals to prevent overdriving circuits and to show signs of loading. The meter also allows fully autoranged external signal measurement of DC and Peak-to-Peak voltages. High voltage DC may be measured with optional probes.
* The special tests include a highly reliable ringing test of deflection yokes and fly-back transformers, a DC power supply for troubleshooting, and special signals to feed directly into a video tape deck. In addition, an accessory jack provides signals to feed optional accessories for special applications.
All specifications allow for ten minutes of warm-up and are at 15° Celsius – 35° Celsius. The operating range is 5° Celsius – 45° Celsius.
Video Patterns: These digitally generated patterns may be used to modulate the RF and IF generators, the video pattern position of the drive signal switch, and the VCR standard output.
* Dot: Single dot centered ±1%, between horizontal and vertical blanking intervals.
* Cross: Single cross centered ±%, between horizontal and vertical blanking intervals
* Crosshatch: 21 vertical lines, 15 horizontal lines
* Color Bars: 10 bar, phase-locked, grated-rainbow with true color burst
* Chroma Bar Sweep: Standard burst and blanking levels during horizontal sync plus three frequency bars for chroma bandpass alignment of chroma demodulator stages. The bars are set to chrominance phase at 3.07, 3.58, and 4.09 MHz, with a 100% white bar on each side. The center bar is set at 75% saturated cyan. Each bar can be switched in or out on the front panel.
* Multi-burst Bar Sweep: Ten frequency bars with modulation levels alternating between pure black and 100% white. The modulating square wave frequency references start at “0 MHz†(96 KHz) and increase to 4.5 MHz in 0.5 MHz steps. All bars except the 3.5 MHz bar, are luminance phased to allow passage through the luminance channel of comb filters. All bars are crystal controlled and phase locked to each other and to horizontal sync. All bars can be switched in or out on the front panel.
* 10 Bar Staircase: Standard EIA 10 level staircase. Each step is within ±10% tolerance from EIA specifications.
* External Modulation: Maximum 1 VP-P input (negative sync); 75 ohm input impedance, frequency range from 0-4.5 MHz
* Interlace Adder: All patterns except EXT. MOD. Input, may be interlaced or non-interlaced with the front panel switch
* VIR Adder: A VIR signal can be added to line 19 of all patterns with the front panel switch, except EXT. MOD.
* Channels: STD TV, All FCC specified channels, 2-83; STD Cable, FCC specified VHF channels (2-13) plus all midband, superband, and hyperband channels in standard 6 MHz steps; PROG CABLE, same as “STD CABLE†except each channel may be shifted from 0 to ±9.75 MHz in 0.25 MHz steps with programming stored in non-volitile memory
* Channel Frequency Accuracy: All channels accurate to 400 PPM, within the guaranteed temperature range. Temperature drift over wider temperatures is ±10 PPM/deg. Celsius
* Vernier Attenuator: Total error over Vernier range of 500 uV to 5000 uV, ±3 dB except UHF. UHF: 500 uV to 50000 uV, ±dB, ±.1 dB per channel above channel 14
1). Residential or Business Delivery
2). Will you need Lift Gate delivery if you do not have a dock or a forklift.
3). Your City and Zip Code along with a phone number
* If you have a problem with the purchase, please contact us Immediately, (within 48 Hours) of receipt of the Item so we can help resolve the situation.
* We are not available to answer Emails on Weekends or Holidays.
