Metrix OX 832 - 3 Getting Started; Autoset

30 MHz-differential oscilloscope 9
3. GETTING STARTED
 Respect the safety instructions indicated in Chapter 1.
- Position the rotary controls as indicated in the figure 1.
- Press the POWER key (39): the last memorised configuration of the front panel is
restored.
- Validate the AUTO key (19).
- Adjust : - brightness with the INTENSITY potentiometer (3),
- the thickness of thetraces with the FOCUS potentiometer (1),
- the horizontalness of the traces with the potentiometer to be reached
through the TRACE ROTATION hole (2).
 Adjust the brightness of the trace according to ambient lighting. Excessive
brightness can damage the tube, particularly when there is no sweeping in process
(spot stationary).
- Apply the signal to be displayed to channel CH1 or CH2.
- Press on the AUTOSET key (3) .
- When using a 1/10 probe, use the PROBE ADJUST signal (33) (2.5 V, 1 kHz) to adjust
the probe compensation (refer to § 4. APPLICATIONS).
3.1. AUTOSET
• AUTOSET automatically carries out the following searches:
active channel, vertical sensitivity, horizontal deflection coefficient, trigger slope.
• AUTOSET automatically puts the oscilloscope into the following configuration:
synchro PTP, AC coupling of the connected channel, horizontal magnitude x 1,
DC coupling of the trigger source.
• AUTOSET does not affect : POSITION (H and V), VAR, DELAY, INTENSITY.
The AUTOSET function is activated by pressing the AUTOSET/ABORT key (38) (key only
active while pressed):
- The AUTOSET/ABORT LED remains on during the search phase.
- When the search phase ends, if the calibres found by the AUTOSET function are
different from those indicated by the vertical sensitivity and time base switches, the
AUTOSET/ABORT LED flashes.
- There are two ways of quitting the AUTOSET function:
 Manual search for the ranges found by AUTOSET:
• You search for the AUTOSET ranges by turning the (4) and/or (10) sensitivity and
(20) time base switches in the direction indicated by the coupling or trigger-source
LED which is flashing.
• The AUTOSET LED goes out when all the ranges determined by the AUTOSET
have been found.
 Pressing the AUTOSET/ABORT key (38) again will cancel the AUTOSET function.
 Vertical adjustment is not set by the AUTOSET. You should ensure that position (6)
and (11) rotary controls are correctly centred