User's Manual

233
Users Manual
26
Frequency Measurements
A frequency measurement is a count of the number of
times an ac voltage or current signal crosses a threshold
point each second.
To make a frequency measurement:
1. Set the function switch to  for voltage or  for
current.
2. Connect the Meter to the signal source.
3. Push .
The Meter autoranges to one of four frequency ranges:
99.99 Hz, 999.9 Hz, 9.999 kHz, and 50 kHz.
Below are some hints for frequency measurements:
• If a measurement shows as 0 Hz or is not stable, the
input signal can be below or near the trigger level. A
lower range increases the sensitivity of the Meter and
can usually repair these problems.
• An input signal with distortion can cause a frequency
measurement to be higher than usual. The distortion
can cause multiple triggerings of the frequency
counter. A higher voltage range decreases the input
sensitivity and can correct this problem. In general,
the lowest frequency is the correct one.
Remote Operation
The Meter uses low-power 802.15.4 wireless technology
to allow the display module to operate in a different
location than the Meter base. Although there is control of
some Meter functions (Hold, MIN MAX AVG, Range, and
Backlight), complete remote control of the Meter is not
available through the display module.
The wireless radio does not interfere with meter
measurements. Usually, the radio is off when the display
module is docked on the Meter base. It is possible for the
radio to be on when the display module is docked and the
function switch is set to OFF. To make sure that the radio
is off, remove the batteries from the Meter base and
display module.
The display module is synchronized with a Meter base
when it is docked on the Meter base and turned on.
Different display modules can be synchronized with a
Meter base but, only one display module can be
synchronized to a Meter base at the same time.