DN082-02v02
JYE Tech - 3 - www.jyetech.com
LEVEL
Selects trigger level
. When this button is pressed, the trigger level adjustment indicator will be highlighted
and the trigger level can be adjusted by turning the adjustment knob.
Pressing this button again will toggle the
trigger source between internal and external.
HOLD
Toggle the oscilloscope between HOLD and RUN states.
4.
Connectors and Terminals
Power Supply Connector
This connector is located at bottom right of the panel. A 9
–
12V DC power supply with minimum 500mA
capacity should be used. Even though there is over-voltage protection, a power supply voltage higher than 13V
should be avoided. The centre conductor of the connector is the positive pole of the power supply.
Signal Input Connector
This connector locates at bottom left of the panel. This is a standard BNC connector for oscilloscope probe.
Please note that with a 1X probe the maximum peak-to-peak voltage applied to this input should not be greater
than 50V. If measurement for larger voltage is needed appropriate divider (use 10X probe, for example) should be
provided.
USB Connector
This connector locates at the right side of oscilloscope. This is a 5-pin mini USB B type connector. It is for
firmware upgrading and data transferring to/from PC.
M.F.T. Connector
The Multi-Function Terminal (M.F.T.) locates at the left side of oscilloscope. It serves two purposes:
1)
Test Signal output
2)
External Trigger input
The function of M.F.T. is selected by [LEVEL] key and indicated by the small letter at the right of trigger
mode indicator. The table below summarizes the functions of M.F.T.
Indicator Trigger Source
Test Signal Output
“
i
“
Internal
Enabled
“
e
“
External
Disabled
5.
Basic Operations
Power Up
Connect power adapter to the connector at bottom-right and push the [KNOB] button. The oscilloscope first
enters bootloader and stays for 1
–
2 seconds, and waits for firmware upgrade request. If no upgrade request is
detected control is passed to main firmware. Logo and firmware version information will be briefly displayed and
then oscilloscope enters normal working state.
Set Parameters
The basic and most frequently used oscilloscope parameters are:
1)
Vertical related
–
sensitivity, vertical position [VPOS], and AC/DC coupling.
2)
Horizontal related
–
Time-base [SEC/DIV] and horizontal position [HPOS].
3)
Trigger
–
trigger modes [MODE], edges [SLOPE], source, and level [LEVEL].
Please refer to the descriptions in Section 4 for how to use these controls to change the parameters.
Example 1 Observe the test signal (Practice basic operations)
1)
Place the tip of the probe on the centre conductor of the BNC
connecter marked M.F.T. This is the output of built-in
1KHz/5Vpp test signal.
Remember to set the attenuation
switch at probe handle to 1X position.
2)
Press the [LEVEL] button to set the trigger source to internal
(letter
‘
i
’
should be displayed. Otherwise you won
’
t get test
signal output.)
Fig 3