Extech Instruments MS400 User Manual page 42

To make a voltage measurement on CH1, perform the following:
1. Press the MENU key: the function menu will appear at the right of the screen.
2. Press the MENU UP or MENU DOWN key to select CURS MEAS. Two options
are shown at the bottom of the screen.
3. Press the F1 key to select the measurement type Voltage. Two purple crossing
dashed lines V1 and V2 are shown on the screen.
4. Press the F2 key to select the measured channel CH1.
5. Press and hold the OSC OPTION key till the UP/DOWN CURSOR 1 is visible on
the screen. At this time, adjust OSC UP or OSC DOWN and the dashed line V1 is
shown moving up and down while the measured voltage value of V1 relative to
the zero position of CH1 appears on the screen.
6. Press and hold the OSC OPTION key until the UP/DOWN CURSOR 2 appears
on the screen. Now, adjust OSC UP or OSC DOWN and the dashed line V2 will
appear moving up and down while the measured voltage value of V2 relative to
the zero position of CH1 is displayed on the screen. Also, the absolute values of
V1 and V2 can be shown on the screen.
The user can view a screen that looks similar to the following Figure 45.
Figure 45: Use the Cursor for a Voltage Measurement
To use the cursor for a time measurement on CH1, perform the following:
1. Press the MENU key; the function menu will appear at the right of the screen.
2. Press the MENU UP or MENU DOWN key to select Cursor Measurement. Two
key labels are shown at the bottom of the screen.
3. Press the F1 key for measurement type Time. Two vertical dashed lines T1 and
T2 appear on the screen.
4. Press the F2 key to jump to the measured channel CH1.
5. Press and hold the OSC OPTION key until the UP/DOWN CURSOR 1 appears
on the screen. Then adjust OSC UP or OSC DOWN to observe the dashed line
moving left and right. At the same time, the time value of T1 relative to the
screen middle point position will be displayed on the screen.
6. Keep pressing the OSC OPTION key until UP/DOWN CURSOR 2 is displayed on
the screen. Then adjust OSC UP or OSC DOWN so that the dashed line T2 is
moving right and left while the time value of T1, relative to the screen middle
point position, appears on the screen. Observe the absolute time values and
frequencies for T1 and T2.
42 MS400 Version 2.0 – December 2007