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Specifications – B&K Precision 2640 - Datasheet User Manual

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Accessories

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Handheld RF Field Strength Meter

Model 2640

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Frequency Range

100 kHz to 2,000 MHz

Resolution

Min. 6.25 kHz Multiples

Accuracy

± 4.5 PPM

W-FM / N-FM

Wide FM : Approx. 180 kHz @-6 dB

/ AM / SSB

Narrow FM : Approx. 12.5KHz @-6 dB
AM/SSB : Approx. 2.4 kHz @-6 dB

Step Range

AM, SSB, Narrow FM : 6.25 kHz, 12.5 kHz
Wide FM : 6.25~125 kHz (Multiple of 6.25 kHz)
125~2500 kHz (Multiple of 125 kHz)

Span Range

AM, SSB, Narrow FM : 1 MHz, 2 MHz
Wide FM : 1~20 MHz (Multiple of 1 MHz)
20~400 MHz (Multiple of 20 MHz)

Frequency Selection Mode

Center, Start/ Stop, Span

A

Am

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Measurement Range

-45 dBm to –110 dBm

Average noise Level

Wide FM : -100 dBm Max.
Narrow FM : -110 dBm Max.
AM/SSB : -100 dBm Max.

Amplitude Units

dBm, dBmV, dBuV

Reference Level Accuracy

±3.0 dB (Typical) @ 400 kHz to 600 kHz
±2.0 dB @ over 600 kHz

Reference Level Range

0 dBm to –80 dBm

Log Scale

0.2 dB/DIV min, in 0.25 dB Span (5 Display Division)

Internal Attn

10 dB

Internal Attn Accuracy

±1.0 dB (@25)

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Speed

Min. 500 msec

Trigger Source

Narrow FM / Wide FM / AM / SSB

Trigger Mode

Free Run /Single Run /Continuous /Wave Squelch Run

Trigger Level

TTL Level

Marker Mode

Marker / Delta Marker

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Trace & Setup Storage

Max 100 Waveforms and 100 States

D

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Type

Mono STN LCD

Display Resolution

192 Pixels X 192 Pixels

LCD Light

On / Off

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Frequency Range

35 MHz to 2,000 MHz

Resolution

7 Digits

Accuracy

±50 PPM ±1 COUNT

Sampling Time

1 sec

Input Sensitivity

35 MHz to 2,000 MHz : 150 mVrms
20 MHz to 1,000 MHz : 100 mVrms

Input Impedance

50 Ω

Max. Input Voltage

5 Vrms Max.

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RF Input Connector

N type Female, 50Ω

Max Input Level

Max. +10 dBm, 5V rms

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Operating Temperature

0º C to 40º C

Humidity

35% RH to 85% RHP

Storage Temperature

10º C to 50º C

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Battery Power Source

AA Type Ni-MH Rechargeable Battery × 6 PCS

Battery Specification

AA Type 1.2 V, 2,700 mAh Rechargeable Nickel
Metal Hydride Battery

Adapter

SMPS Type AC Adapter (DC 12 V Output)
Car-Adapter (DC 12 V Output)

Auto Power On/Off

Off/ 5 min./ 10 min./ 20 min./30 min.

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Dimension

4 ”(W)×9 ”(H)×1.8 ”(D)

Weight

Approx. 0.66 kg(1.45 lbs)
(including Antenna, except Battery)

Supplied: Antenna (Receive Only), SMPS Type AC Adapter, Fuji-AA type NI-MH Rechargeable
Battery (6 PCS, 1.2 V 2,700 mAh), Manual, Coaxial Cable, Earphone, Carrying Case, Carrying
Belt, RS-232C Cable, Adapter(N-BNC), Software for PC Application

The included AK2640 software and interface cable allows full control of the 2640
via a PC through the RS232C interface. The software allows the saving, recalling
and analyzing of current and saved waveforms. The 2640 can save up to 100
waveforms and states in to it’s internal memory.

Screenshot of the AK2640 software

Screenshot of the exported CSV data

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Spectrum: Peak Search, Marker to Center, Channel Power

Function

Internal Attenuation: The input range can be extended by

enabling the internal 10 dB Attenuation function

Sweep Mode: Single Run, Free Run, Squelch Run Selectable

Squelch Function: The Squelch Level may be adjusted across the

full dynamic range.

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The 2640’s built in frequency counter is independent from the field strength

analyzer and measures the signal applied to the external BNC connector

Frequency range: 35 MHz to 2,000 MHz

No. of digits: 7 digits

Resolution: 1 kHz

Volume

Earphone

RF Input
Type N

Frequency
Counter

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Specifications

model

One Year Warranty

2640