Tektronix 485 Operator's Handbook Manual page 8

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GAIN me | A TRIGGER
2) +UPT B ; HOLDOFF |) VERT
CH 2 | MODE
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A EXP TRIG oe
VARIABLE (CAL IN}
VARIABLE (CAL IN)
CH1 VOLTS/DIV CH2 VOLTS/Di
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18. INT TRIG Pushbutton Selector (Green Panel Background)
NORM
The signal being displayed in the internal trigger source.
CH 1
Selects CH 1 as the internal trigger source.
CH 2
Selects CH 2 as the internal trigger source.
. VOLTS/DIV Switch, CH 1 and CH 2
Selects 1X calibrated deflection factors from 5 mV/div to
5 V/div in ten steps (1-2-5 sequence). Attenuating probe tip
deflection factors for X10 and X100, coded probes are
automatically indicated by the three readout diodes at the
circumference of this knob. All three diodes are off when the
Operating Instructions—485 Operators
INVERT . '
4 e e INCHEASE
A TRIGGERING
COUPLING SOURCE
INT
POSITION
EXT TRIG
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SOG EVBMS MAX}
TERTRONIX, INC
channel is not selected for display by the VERT MODE
selector, or when using probe IDENTify.
VARIABLE Volts/div Control, CH 1 and CH 2
Provides continuously variable deflection factors between
calibrated steps. Maximum deflection factor range is extended
to 12.5 V/div. Push away control provides calibrated deflection
factor in the CAL IN position.
1 MQ/50 Q Switch, CH 1 and CH 2
INuminated push-push selection for input impedance. Is also
used to reset 50 (2 overload condition. 1 M92./50 Q switch has
to be pushed twice to return to 50 © input impedance.
. RESET Indicator
When maximum input power is exceeded (5 V RMS) in the
50 22 mode indicator is illuminated, and the 1 M{9./50 © lamp is
turned off.
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