Tektronix 1730 Series, Инструкция по эксплуатации

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2–1
Section 2
Operating Instructions
These instructions provide information about the front–panel controls, rear–
panel connectors, graticules, and an Operator’s Familiarization / Checkout
Procedure, along with measurement discussions.
Front–Panel Controls and Indicators
The front–panel controls and indicators consist of momentary contact push–but-
ton switches, variable controls, and backlit switch selections. See Figure 2-1 for
control and indicator locations. When Line Select is being used, the field and
line numbers are displayed on the CRT for field rate sweeps; a strobe pulse is
applied to displays of 2 field rate sweep to identify the selected line.
There are eight push–button switches that have functions that are accessed by
holding the switch down for approximately one second. These functions are
identified by a blue box surrounding the front–panel label. The DC Restorer
switch toggles between FAST and SLOW when it is pushed and held. When
exiting a held mode the selection reverts to the top of the list at the touch of the
push button, with the exception of the REF switch, which returns to its previous
setting.
1
INPUT
FILTER
Toggles through three positions, FLAT, LPASS, and CHROMA. In 2LINE or
2FLD SWEEP a combination filtering routine, consisting of Low Pass and Flat
for alternate lines or fields, can be accessed by holding the FILTER push button
switch in. In the dual filter mode the low pass filtered line or field will always
be on the left in 2LINE or 2FLD SWEEPs. Lines are overlayed in 1LINE
SWEEP. The dual filter can not be accessed when the 1730–Series is in AB
switching or Line Select mode.
Filtering always returns to FLAT when coming out of the combination filtering
routine. If AB switching or LINE SELECT is selected after the dual filter mode,
filtering will be low pass.
2 REF
Toggles between internal and external reference. Calibrator is accessed by
holding in the REF switch. Instrument status is retained in memory when CAL
is selected and the original status restored when the push button is again pushed.
All front–panel lights, except SWEEP and MAG, go out and GAIN goes to X1
when the calibrator is selected. The X5 and VAR GAIN are usable with the