| Частотомер TTi, PFM3000
Aim-TTi Frequency Counter PFM3000 3.0GHz Handheld Reciprocal Counting
A sophisticated counter with a large LCD display that uses a reciprocal counting measurement technique to achieve fast response and high resolution at all frequencies.
Wide frequency range of <3Hz to >3000MHz
High sensitivity across the frequency band
High impedance measurement up to 125MHz
Period measurement from 8ns to 330ms
8 digits of resolution at 1 sec. measurement
Low pass filter for noise suppression
Data hold function to freeze display reading
Long battery life and push-to-measure function
Powered by PP3 Alkaline battery; Stock no. 394-9059 (not supplied)
Range A Range B
Frequency Range <3Hz to >125MHz <80MHz to >3000MHz
Sensitivity <15mV rms (10Hz to 125MHz) <12mV to 2GHz, <25mV to 2.5GHz
<50mV to 3GHz
Input impedance 1MOhm // 20pF (AC coupled) 50Ohm (AC coupled)
Period measurement <8ns to >330ms -
Measurement times Selectable as 0.3s, 1s or 10s
Timebase 10MHz Xtal, 0.3ppm/oC; closed-case adjustable
Noise filter Low-pass filter at circa 50kHz for low frequency measurement
Display (LCD) 8 digits (11.5mm high) plus overflow for 8.5 digits, 15 annunciators
Size and weight 81 x 178 x 30mm (W x L x D); 190 grms exc. battery
Battery life Typically 20 hours continuous
Push-to-measure Unit automatically turns off 15 seconds after measurement
Supplied with user manual
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