B+K precision 2640 User manual

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Safety Term and Symbols
.
Danger statements identify condition or practices that could result in injury
or loss of life.
Caution statements identify conditions or practices that could result in
damage or fire.
Ground statements identify conditions or practices that could connect
protective conductor.

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Caution for safety
Prohibiting to removal the cover
Do not remove the instrument cover to access the internal components. Only B&K
Precisions’ Service technician with knowledge of the instruments’ condition and
dangerous voltages can repair the instrument.
Instruments that appear damaged or defective should be made inoperative and secured
against unintended operation until they can be repaired by qualified service personnel.
Keep the clean on power insert
Instrument’s power insert should remain dust free.
Clean the power insert regularly. Dust could result in damage to this instrument.
Continually clean the dust on input terminal of RF frequency counter.
Clean the input terminal regularly. Dust could result in damage to the instrument.
RF in/output rating
Rating of RF input and output connector
Maximum DC voltage rating
RF input connector (socket): N type female, 50Ohms
Maximum RF input power: 5Vrms
Caution: Do not use over 5Vrms supplied and/or (-) power could result in damage to this
instrument
Do not operate this instrument if there is any doubt it is functioning properly: if
operating personnel feels the instrument is not operating properly, return this instrument
to B&K Precision for service and repair to ensure the safety features are maintained.

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DC Power
The operating Personnel must use the DC adaptor supplied with this instrument. Other
adaptors could result in damage to this instrument and it is the limitation of warranty Exterior
DC input connector should be matched with polar. DC connector tip must attach with (+) polar
grounding.
The operating personnel must use grounded power Restore this instrument
Instrument care
＊Avoid direct light
＊Keep away the heating system
＊Avoid high temperature(Ex. Inside of the car during the summer time)
＊Keep away from liquids
＊Avoid high moisture and/or poor ventilation
＊Keep away from dust and/or smoke
＊Avoid extremely low temperature

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B&K Precision 2640 Ni-MH battery is rechargeable. Charging is controlled from the power of
the battery cell and the temperature of the battery. Ni-MH Rechargeable battery is going to
increase temp slowly until the temperature is extremely higher. Battery charging is finished
automatically by checking the degree of the temperature (dT/dt). For battery protection, when
the power of Battery cell is increased, comparing regular temperature and/or exterior
temperature degree of when the temperature increases over 50 degrees, battery charging will
be finished automatically.
Operating personnel must use Ni-MH Rechargeable Battery and do not operate in an
explosive atmosphere.
-The battery usage time can change due to the using term, environment and
temperature.
-When battery consumption is large battery-running time will decrease.
Operating personnel should phase in a new battery when battery -running time is less than
half of the initial operating time.
-Operating personnel should not use this instrument and/or keep the battery in
place for long periods of time, which could result in discharge of the battery.
- To avoid damages to battery, when battery is low, this instrument will turn off
automatically.

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Warranty
Limited One-Year Warranty
B&K Precision warrants to the original purchaser that its products and the
component parts thereof, will be free from defects in workmanship and
materials for a period of one year from date of purchase from an authorized
B&K Precision distributor.
B&K Precision will, without charge, repair or replace, at its option, defective
product or component parts. Returned product must be accompanied by proof
of the purchase date in the form of a sales receipt.
To obtain warranty coverage in the U.S.A., this product must be registered by
completing the warranty registration form on www.bkprecision.com within fifteen
(15) days of purchase.
Exclusions: This warranty does not apply in the event of misuse or abuse
of the product or as a result of unauthorized alterations or repairs. The
warranty is void if the serial number is altered, defaced or removed.
B&K Precision shall not be liable for any consequential damages, including
without limitation damages resulting from loss of use. Some states do not allow
limitations of incidental or consequential damages. So the above limitation or
exclusion may not apply to you.
This warranty gives you specific rights and you may have other rights, which
vary from state-to-state.
B&K Precision
22820 Savi Ranch Parkway
Yorba Linda, CA 92887
www.bkprecision.com

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Accessories (included)
Carrying Case AC Adaptor Carrying Strap
Coaxial Cable RS-232 Cable
Power Cable Ear Phone N-BNC
Adaptor
Ni-MH(Rechargeable
Battery) 6PCS User’s Manual Antenna
Software CD

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1. Introduction
Overview……………………………….……………………………..……………….11
2. Features
Main features …………………………………………………………………….…12
3. Functions
RF Field Strength Analyzer…………………………………………………..…….13
Frequency Counter……………………………………………………….………….13
Specifications………………………………………………………………...……….14
4. Instrument overview
Front Panel………………………………………………………………………...….18
Rear Panel…………………………………………………………………………….20
Side Panel…………………………………………………………………………….21
Top Panel…………………………………………………………………………..….22
5. Basic operation
Before Power On…………………………………………………………….……….23
Power On……………………………………………………………………………...24
Turn on Power of Instrument………………………………..…………………….25
Description of operation screen…………………………..……………………….26
Reception Mode……………………………………………………………..……….32
Sweep Mode………………………………………………………………………….33
Set up Span……………………………………………………………………..…….34
Frequency Input……………………………………………………..………………. 35
Adjust Screen Level…………………………………………………….………….37
Run - Scanning…………………………………………………..….……………….38
Marker…………………………………………………………..…………………….39
Power Meter…………………………………………………………………………46
Setting of attenuator………………………………………………………………….49
LCD Light……………………………………………………………………………...50
LCD Contrast………………………………………………………………………….51
Buzzer ON/OFF……………………………………………………..……………….52
Table of contents

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Save/Load………………………………………………………….………………….53
Frequency Counter…………………………………………………………….…….57
Power Source………………………………………………………………..……….59
Level Unit………………………………………………………………………..…….60
Reset………………………………………………………………………………..…61
Baud Rate…………………………………………………………………………..…62
Connection for PC……………………………………………………………………63
Auto Power……………………………………………………………………………64
Offset…………………………………………………………………………..………65
Menu……………………………………………………………..…………………….66
System……………………………………………………………..…….……………70
6. Description of key operating
Run [GHz] …………………………………………………………………….………73
Mode [MHz] ………………………………………………………………..…………73
Sweep [kHz] …………………………………………………………….……………74
Marker [DEL] …………………………………………………………………………74
No. 1 [Start/Stop] …………………………………………………….………………75
No. 2 [Span] ………………………………………………………………..…………75
No. 3 [Level] …………………………………………………………………….……76
No. 4 [Single]…………………….…………………………..………………………76
No. 5 [Multi]…………………………………………………………………………77
No. 6 [UNIT] ……..…………………………………………..………………………77
No. 7 [LCD Light] ……………………………………………………….……………78
No. 8 [LCD CONT; LCD Contrast] …………………………………………………78
No. 9 [Attenuator] ……………………………………………………………………79
No. 0 [system] …………………………………………………………..……………79
Shift……………………………………………………………………………….……80
Dot [Buzzer] ……………………………………………………………..……………80
Menu [Load] ………………………………………………………………….………81
Enter [Save] …………………………………………………………….……………81
Up/Down Keys and Knob Key………………………………………………………82

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Overview
The B&K Precision 2640 handheld RF Field Strength Analyzer is
optimized to analyze signals from many different source for multiple
applications. The B&K Precision 2640 has adopted a synthesizer method
and has a wideband reception range of 100 kHz to 2,000 MHz. The
characteristic of frequency response of the B&K Precision 2640 is
calculated by memorized calculation data from a “look up table”, and so it
enables the B&K Precision 2640 to measure accurate levels and make
easy analysis of a wide range of frequency bands.
The B&K Precision 2640 provides various functions and user-friendly
interface which makes it easy 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 separate GUI software. So, user can
control the B&K Precision 2640 easily after connecting the B&K Precision
2640 with a personal computer, and can utilize the analyzed data
variously after converting or saving numerical value or graph.
Introduction (section 1)

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Main features
100 kHz to 2,000 MHz measurement range
Frequency Spectrum Analyzing Function and Frequency
Counter Function
Measure and demodulate N-FM, W-FM, AM, SSB signals
Built-in 2 GHz Frequency Counter
Accurate Signal Level Measurement
Marker/Delta Marker/Squelch Adjustment Function
PLL tuning system for precise frequency tuning
Built-in Speaker
192 Pixels X 192 Pixels Back Light LCD
Menu selection method for Function selection
RS-232C Interface
User-friendly Icon Display
Maintenance of Wireless Telecommunications Equipments
General Usage for Installation and Maintenance of
Telecommunications Equipments
Installation and Maintenance of Cable
RFID Tag RF Strength Measurement
Installation and Maintenance of Satellite Antenna
Detection of Tapping and Hidden Camera
Features (section 2)

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RF Field Strength Analyzer
Spectrum: Peak Search, Marker to Center, Channel Power
Function
Internal Attn.: The input range can be extended by internal Max
10 dB Attn. function.
Sweep Mode: Single Run, Free Run, Squelch Run Selectable
Squelch Function: The Squelch Level may be adjusted to any
value from the reference level to Full Scale.
Copy Function: The Copy Set mode allows the contents of the
Channels edit Setup and Data memories to be copied to an
external device. Data may also be written into these memories
from external device
Frequency Counter
Frequency range: 35 MHz to 2,000 MHz
No. of digits: 7 digits
Resolution: 1 kHz
Functions (section 3)

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Frequency Range 100 kHz to 2,000 MHz
Resolution Min. 6.25KHz Multiples
Accuracy TXO : ±3 PPM / Display : ±1.5 PPM
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 6.25kHz)
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 Mode Center, Start/ Stop, Span
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 @ 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
Division)
Internal Attn 10 dB
Internal Attn
Accuracy ±1.0 dB (@25 ℃)
Frequency
Amplitude
Specifications

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Specifications
Type Mono STN LCD
Display Resolution 192 Pixels X 192 Pixels
LCD Light On / Off
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 Ohms
Max. Input Voltage 5 Vrms Max.
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
Trace & Setup
Storage Max 100 Waveforms and 100 States
Sweep
Memory
Display
Frequency
Counter

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Specifications
A
RF Input Connector N type Female, 50 Ohms
Max Input Level Max. +10 dBm, 5Vrms
Operating
Temperature 0℃to 40 ℃
Humidity 35 RH to 85 RHP
Storage Temp. 10 ℃to 50 ℃
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.
The B&K Precision 2640 can be quickly recharged using Ni-MH
Rechargeable Batteries. The Recharged method of Ni-MH
Battery is controlled by the voltage of the Battery Cell and the
temperature of Battery. The external temperature of Ni-MH
Rechargeable Battery is gradually increased and then quickly
increased in some point of time. The B&K Precision 2640
closes charging quickly after checking the increased amount
(dT/dt) of external temperature of Battery for a unit time. Also, for
Battery protection, the recharging is compulsory closed by built-
in temperature sensor in case that the voltage of Battery Cell will
be increased to more than some specified level or the external
temperature of Battery will be going up to over 50C. For safe
usage, it is strongly recommended to use Ni-MH Rechargeable
battery, and please do not use in the place with high temperature
or high humidity during recharging.
Spectrum
input Port
Operation
Environment
Power
Source

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Specifications
Dimension 4”(W)×9”(H)×1.8 ”(D)
Weight Approx. 0.66 Kg(1.45 lbm)
(including Antenna, except Battery)
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
Physical
Specifications
Standard
Accessories
Specifications and information is subject to change without notice.
For the most current product information please visit www.bkprecision.com

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Front Panel
The LCD screen can display the signal input level, frequency and
amplitude values, and the relative system data
Power Key
Key to turn ON/OFF the system
Run / Mode / Sweep / Marker Key
Run
Key to run the Scanning or input the GHz unit for frequency value
input
Instrument overview (section 4)
LCD
Front Figure
Key Pad
Shift
Power
21
Menu
3
Enter
456
789
0 .
Run
GHz Mode MHz Sweep kHz Marker DEL

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Front Panel
Mode
Key to set up the Reception Mode or input the MHz unit for
frequency value input
Sweep
Key to set up the Sweep Mode or input the kHz unit for frequency
value input
Marker
Key to select the Marker Function:
Marker, Delta Marker, Squelch Marker, Peak Search, Marker to
Center, and Channel Power
Numeric Key
Key to input the frequency value
Menu Key
Key to set up the required functions of system
Up/Down Key
Key to select the Menu or Frequency Value
Knob Key
The function of Knob key is same as the Up/Down keys

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Rear Panel
Belt Clip
User can yoke the B&K Precision 2640 on a belt.
Speaker
User can use the speaker to output the modulated audio from RF
signal level.
Reset Key
User can use this Reset key for system malfunctions or memory
reset.
Battery
Note the polarity of batteries at inserted battery compartment. And
user must use the AA type Ni-MH Rechargeable batteries for battery
charging
Rear Figure