Tektronix 1755A Analyzer
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Waveform Vector Monitor
.1750A/1760-Series is a half-rack width by three-rack-unit high instrument. It is a versatile waveform monitor/vectorscope for composite and component television signals. Most circuitry and the mechanical components are shared throughout the series. In addition to NTSC and PAL standard versions, a dual standard (NTSC/PAL) version is available.
These instruments employ a bright, post accelerated CRT with lighted internal graticule. The parallax free internal graticule structure contains targets and markings for both the vector and waveform functions. The “Lightning” graticule, for the 1760-Series, is electronic, in order to keep from complicating the waveform/vector graticule. Option 74, which uses a white phosphor (P4) CRT, is available for all three instrument series.
These monitors are microprocessor controlled to provide greater versatility. Switch settings, affecting the operation of the instrument, are continuously polled by the processor, with any change in status acted upon immediately. Current operating conditions are preserved in Non-Volatile Random Access Memory (NOVRAM), which returns the front panel settings to the current settings, in the event of power interruption (either accidental or routine power down).
Many operational measurements are performed on a repetitive basis, and these instruments provide a method of repeating common measurements by simply selecting stored measurement settings from a CRT menu list. The common measurement front panel settings can be stored and named by the user. Measurement specific, front-panel settings can be recalled by pushing the front-panel Preset Menu button and selecting the desired preset by name or number.
Many functions that were formerly selected by changing internal jumpers and/or wire straps are now accessible through on screen menu selections. Menus are selected by pushing the appropriate front panel Menu selection. Menu items are then selected by pushing one or more of the assignable switches and/or rotating the assigned front-panel control. Once selected these menu choices are retained until changed by subsequent reconfiguration.
The front panel provides both assignable switches (located next to the CRT) and controls (located beneath the CRT), that operate with CRT readout to increase functionality without cluttering the limited front panel area. Function of these switches and controls is dictated by the front-panel Display and initial Menu choices.
The 1740A-Series is a full capability waveform/vector monitor that also provides audio and time code measurements. The 1750A-Series has all of the capabilities of the 1740A-Series, with the addition of SCH phase measurements.
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Electronic document, no scan, very well readable.
15 September 2019
Instrument controls and readouts appear in ALL CAPITALS .
Topics covered in the user manual are as follows:
Appendix A provides instrument specifications, both
electrical and mechanical.
Appendix B describes remote control interfaces.
Appendix C covers routine service procedures, such as
replacing fuses and graticule light bulbs.
The appendixes are followed by a glossary of specialized
terms and an index.