B&K Precision 2190B Manual de Instruções descarregar pdf (Página 9)

CONTROLS AND INDICATORS

GENERAL FUNCTION CONTROLS

1. ON Indicator. Lights when oscilloscope is “on”.

2. POWER Pushbutton. Turns oscilloscope “on” and

“off”.

3. INTENSITY Control. Adjusts brightness of trace.

4. TRACE ROTATION Control. Adjusts to maintain

trace at a horizontal position.

5. FOCUS Control. Adjusts trace focus.

6. 20 MHz/100 MHz Pushbutton. When released,

selects 100 MHz bandwidth. When engaged, limits

bandwidth to 20 MHz.

7. GND Terminal. Oscilloscope chassis ground

jack, and earth ground via three-wire ac power cord.

8. CAL Terminal. Terminal provides 2 V p-p, 1 kHz

(nominal) square wave signal. This signal is useful for

checking probe compensation adjustment, as well as

providing a rough check of vertical calibration.

VERTICAL CONTROLS

9. VERTical MODE Switch. Selects vertical display

mode. Four-position lever switch with the following

positions:

CH1:

Displays the channel 1 signal by itself.

CH2/X-Y:

CH2: displays the channel 2 signal by itself.

X-Y: used in conjunction with the X-Y control and

Trigger SOURCE switch to enable X-Y display

mode.

DUAL:

Displays the channel 1 and channel 2 signals simul-

taneously. Dual-trace mode may be either alternate

or chopped sweep; see the description under CH1

POS/PULL CHOP control.

ADD:

The inputs from channel 1 and channel 2 are

summed and displayed as a single signal. If the

Channel 2 POSition/PULL INVert control is

pulled out, the input from channel 2 is subtracted

from channel 1 and the difference is displayed as a

single signal.

Fig. 1. Model 2190A Controls and Indicators.

1 2 3 4 5 6 7 8 9 10 11 12 13 14 ... 23 24

Sem comentários

B&K Precision 2190B Manual de Instruções Página 9