Square Wave Output Test Signal (5V, 1 Khz) - Extech Instruments MS420 User Manual

When the MENU button is pressed, the data table appears as shown in Fig. 37-b.
Figure 37-b: Data Table
S (5V, 1 KH )
QUARE WAVE OUTPUT TEST SIGNAL Z
The 5V Square Output is available on the jack at the left side of the meter. The 5V
digital output has a frequency of 1 KHz and can be used to adjust the probe, as
shown as Fig.39
Fig 39: Square-wave test signal
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