Tektronix 2252, Руководство оператора

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Operators Familiarization
Externa! Triggering
Any of the four vertical channels in the 2252 can be used as a source of A and
B trigger signals. When you need a trigger signal source different from the
one derived from displayed signals, you can use any free vertical input
channel. CH 1 and CH
2 can condition a wide range of signals to produce
triggers over the full vertical deflection range from millivolts to hundreds of
volts. CH 3 and CH 4 have two basic attenuation factors {0.1 and 0.5 volts per
division), making them especially useful for triggering on and viewing digital
signal levels.
Auto Setup
Pressing the AUTO SETUP button automatically sets up the front-panel
controls based on the characteristics of the applied signal. The voltage ampli-
tude, sweep settings, trigger parameters, vertical and horizontal positioning,
and trace intensities are preset to produce a usable waveform display. The
waveform is horizontally centered and vertically positioned within the crt dis­
play. The voltage and frequency characteristics of the input signal must be
within the limits of the 2252 specifications given in Section 6.
Auto-setup action for each front-pane! control is shown in Appendix A.
Minimum Setup
Pressing and holding the AUTO SETUP button until the instrument returns to
normal operation initiates the minimum-setup function. This automatically
sets up the front-pane! controls but leaves many of the controls unchanged
from what the user has set.
Minimum setup action for each front-panel control is shown in Appendix A,
Remote Control via the Communications
Port
i
When connected in a system with a host computer or system controller, the
2252 can be operated by the controller. The front panel controls and measure­
ments are accessible via the communications interface. Digitized waveforms
and measurement results can be gathered by the remote controller for tong
term data collection and /or analysis using system programming. The stan­
dard communications interface is a GPIB (general purpose interface bus) for
parallel byte-wide data transfer. The GPIB commands understood by the in­
strument and programming hints are found in Appendix B.
2252 Operators
3-5