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The model 2640 is a battery operated, hand held RF Field Strength Meter with a measurable frequency range of 100kHz to 2000MHz. It is optimized to analyze signals from many different sources for multiple applications. The characteristic of frequency response of the B&K Precision 2640 is calculated by memorized calculation data from a “l(fā)ook up table”, and so it enables the 2640 to measure accurate levels and makes easy analysis of a wide range of frequency bands. The B&K Precision 2640 provides various functions and has a user-friendly interface which makes it easy and simple to use. The handheld RF Field Strength Analyzer is ideal for users to test, install and maintain Mobile Telecommunications Systems, Cellular and Cordless Phone, CB Paging, Paging Systems, Cable and Satellite TV Systems as well as antenna site measurements and maintenance. The B&K Precision 2640 supports RS 232C serial communication and has included GUI software. So, user can control the 2640 easily after connecting the B&K Precision 2640 with a personal computer, and can utilize the analyzed data after converting or saving numerical value or graph. The 2640 comes with a professional carrying case, AC adapter, rechargeable batteries, ear phone, N to BNC adapter, BNC coaxial cable, rubber antenna, RS-232 cable and interface software. Features:

100kHz to 2GHz Measurement range

Hand held and battery operated portability

100kHz to 2GHz Measurement range

Built-in 2GHz frequency counter

Detects wide band and narrow band FM, AM & SSB signals

Phase lock loop for precise frequency tuning

Up to 160 channels may be scanned and displayed

Audio output with built-in speaker

Detachable antenna included

Back-lit display

Storable setups and displays

RS-232 Interface

Frequency
Frequency Range	100KHz to 2.0GHz
Resolution	Min. 6.25KHz Multiples
Accuracy	TXO: ±3ppm/Display: ±1.5ppm
W-FM / N-FM / AM / SSB	Wide FM : Approx. 180 kHz @-6 dB Narrow FM : Approx. 12.5 kHz @-6 dB AM/SSB : Approx. 2.4 kHz @-6 dB
Step Range	AM, SSB, Narrow FM : 6.25kHz, 12.5kHz Wide FM : 6.25~125kHz (Multiple of 6.25 kHz) 125~2500kHz (Multiple of 125 kHz)
Span Range	AM, SSB, Narrow FM : 1MHz, 2MHz Wide FM : 1~20MHz (Multiple of 1 MHz) 20~400MHz (Multiple of 20 MHz)
Frequency Selection Modes	Center, Start/ Stop, Span

Amplitude
Amplitude Range	-45dBm to -110dBm
Average Noise Level	Wide FM: -110 dBm Max. Narrow FM : -110 dBm Max. AM/SSB : -100 dBm Max.
Amplitude Units	dBm, dBmV, dBuV
Reference Level Accuracy	±3.0 dB @ under 600KHz ±2.0 dB @ over 600KHz
Reference Level Range	0 dBm to –80 dBm
Log Scale	0.2 dB/DIV min, in 0.25 dB Span (5 Display Divisions)
Internal Attn	10dB
Internal Attn Accuracy	±1.0 dB (@25)

Sweep
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	Maker / Delta Maker

Memory
Trace & Setup Storage	Max 100 Waveforms and 100 States

Display
Type	Mono STN LCD
Display Resolution	192 Pixels X 192 Pixels
LCD Light	On / Off

Frequency Counter
Frequency Range	35 MHz to 2.0GHz
Resolution	7 Digits
Accuracy	±50 PPM ±1 COUNT
Sample Time	1 sec
Input Sensitivity	35 MHz to 2,000 MHz : 150 mVrms 20 MHz to 1,000 MHz : 100 mVrms
Input Impedance	50 Ohms
Max. Input Voltage	5 Vrms Max.

Spectrum Input Port
RF Input Connector	N type Female, 50 Ohms
Max Input Level	Max. +10 dBm, 5Vrms

Operation Environment
Operating Temperature	0 to 40 Degrees C
Humidity	35% to 85% RH
Storage Temperature	10 to 50 Degrees C

Power Source
Battery Power Source	AA Type Ni-MH Rechargeable Battery x 6 PCS
Battery Specification	AA Type 1.2 V, 2,700 mAh Rechargeable Nickel
Adapter	SMPS Type AC Adapter (DC 12 V Output)
Auto Power On/Off	Off/ 5 min./ 10 min./ 20 min./30 min.