VOLTCRAFT AO-610, Руководство пользователя

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6
3.2 FUNCTIONS OF CONTROL SWITCHES
NO. SWITCHES FUNCTIONS
1 POWER SWITCH Power on/off
2 POWER LIGHT Lights when power on
3 INTENSITY Controls brightness of display
4 FOCUS After obtaining appropriate brightness with INTENSITY,
adjust FOCUS for clearest line
5 CALIBRATION Provide symmetric square wave for 0.5V range,
frequency=1KHz. Used for adjusting 10:1 Capacitor and
adjusting the vertical & horizontal sensitivity.
6 TIME/DIV Selects the sweep rate
7 Horizontal
POSITION
Horizontal positioning control of trace on the screen
8 HORIZONTAL
VAR
Provides continuously variable sweep rate, turn clock wise
to the end is the calibrating position
9 LEVEL Control signal trigger to sweep at certain level
10 +/-
TV
+: Triggering occurs when trigger signal crosses trigger
level in a positive-going direction.
-: Triggering occurs when trigger signal crosses trigger
level in a negative-going direction
TV: used to show TV signals
11 AUTO/NORM
EXT/X: X-Y
AUTO : a single trace shown on screen even no signal.
Automatically reverts to triggered sweep
operation when adequate triggered signal is
present. Needs to adjust the Level.
NORM: No trace on screen if no signal. Trace is only
generated when adequate trigger signal is present
EXT/X: X-Y switch
12 INT/EXT/LINE Switch to select the Trigger Source INT/EXT/LINE
13 Ext. Trig Input
Terminal
When switching [11] to EXT/X, it’s X-Y input terminal;
When switching [12] to EXT, it’s Ext. Trig. Input terminal.
14 ATT Continuously adjusting X-Y mode sensitivity, turn
clockwise to obtain the highest sensitivity
15 VOLTS/DIV Adjusting sensitivity of vertical system
16 Vertical POSITION Control vertical position of trace on the screen
17 VERTICAL VAR Continuously adjusting the sensitivity of vertical system,
turn clockwise to the end is the calibration position
18 coupling options
(AC
⊥
DC)
Selects input coupling options
19 INPUT Vertical input terminal
20 POWER INPUT
CONNECTOR
AND FUSE
power input connector (refer to the rear panel for voltage)
110V
±
10% , 220 V
±
10%;