|
A hand-held counter with bench top
performance
The PFM1300 is a highly compact battery powered frequency counter which
offers the convenience of a hand-held multimeter. Surprisingly, however,
its performance exceeds that of many bench top counters of much higher
cost.
A large and clear display
Despite its compact dimensions, the PFM1300 incorporates an 8 digit liquid
crystal display of the size you'd expect to find on a bench top
instrument. A full range of annunciators provide indication of measurement
function, measurement time, overflow, trigger activity, low battery, and
the measurement units. Operation is simplicity itself with all functions
and ranges being selected using just five large buttons.
Wide frequency range and high sensitivity
The PFM1300 can measure frequencies in the range 5Hz to 1300MHz.
Unlike many counters, the sensitivity is high across the whole frequency
range with no dead spots.
A low pass filter can be selected to reduce high frequency signal noise
and ensure stable readings at lower frequencies.
|
|
Low power consumption and push-to-measure
Despite its wide frequency range the PFM1300 has a remarkably low power
consumption enabling it to operate for many hours from a PP3 size battery.
A push-to-measure capability gives a virtually instantaneous reading
followed by an automatic power down after 15 seconds.
This provides greatly extended battery life where continuous monitoring of
the signal is not required.
Alternatively it can be operated from AC line via a DC adaptor.
Reciprocal counting for improved resolution
The PFM1300 uses a reciprocal frequency counting technique which involves
multiple period measurements followed by computation of the reciprocal.
The system yields at least 7 digits of resolution per second of
measurement time and can measure low frequencies to a resolution of
0.0001mHz.
Frequency and period measurement
The PFM1300 can display signals in terms of period as an alternative to
frequency up to 25MHz.
Hold function
A Hold button allows readings to be frozen on the display for measuring
non continuous signals or recording results later.
|
0.001mHz resolution
