UNISource Corporation DM-1150B Operation Manual page 13

Measurement
mode
CAP
4.8 Frequency (Hz) and Rotation Speed Measurement (RPM)
The measurement of frequency and rotation speed measurement
have three modes: normal, Hi Hz and RPM.
Set the function key to "Hz" position.

Press SELECT button to select measurement mode.

The meter is in auto range mode.

Normal mode
In normal mode, the frequency testing range is

0.5Hz~8.0000MHz, divided into six ranges:
999.99Hz/9.9999kHz/9.999kHz/999.99kHz/8.0000MHz.
The meter is in auto range mode and will automatically

select a most suitable range. To select a range manually for
the measurement, press RANGE button to select a proper range from the six ranges.
Touch the probes to the signal source and read the display.

Measurement
mode
Hz
High frequency mode (Hi Hz)
In Hi Hz mode, the frequency testing range is

8MHz~1000MHz, divided into four ranges:
8.0000MHz/80.000MHz/800.00MHz/1000.0MHz. Use the
high frequency accessories to measure frequency above
10MHz.
The meter is in auto range mode and will automatically select

a most suitable range. To select a range manually for the
measurement, press RANGE button to select a proper range
from the six ranges.
Touch the probes to the signal source and read the display.

Measurement mode
HiHz
NOTE:
1. The primary and secondary displays are using together to form a 10-digit display. The primary display
displays the higher 5 digits while the secondary display displays the lower 5 digits.
2. In high frequency measurement, a high frequency tuner is required to facilitate the measurement
Find Quality Products Online at:
Primary display Secondary display
nF/μF MAX/MIN, REL△ parameters
Primary display Secondary display
Press 2nd VIEW
Hz/kHz/MHz
Primary display Secondary display
00000 00000MHz
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