BK Precision BK Precision 2640 Manual

99 Washington Street
Melrose, MA 02176

Phone [phone]
Toll Free 1-800-571-8431

Visit us at www.TestEquipmentDepot.com

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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 operationuntil 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 outputconnector
Maximum DC voltage rating
RF input connector (socket): N type female, 50Ohms
Maximum RF inputpower: 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 safetyfeatures 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 connectorshouldbe matched with polar. DC connector tip must attach with (+) polar
grounding.

The operating personnelmustusegrounded 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-MHbattery 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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Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176

FAX [phone] - TestEquipmentDepot.com

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

Coaxial Cable

Power Cable Ear Phone

RS-232 Cable

Carrying Strap

N-BNC
Adaptor

Ni-MH(Rechargeable
Battery) 6PCS

User’s Manual

Software CD

Antenna

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Table of contents

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

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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

Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176

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Introduction (section 1)

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 ofa 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.

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Features (section 2)

Main features

 100 kHz to 2,000 MHz measurement range
 Frequency Spectrum Analyzing Function and Frequency

Counter Function

 Measure and demodulateN-FM, W-FM, AM, SSB signals

 Built-in 2 GHz Frequency Counter
 Accurate Signal LevelMeasurement

 Marker/Delta Marker/Squelch Adjustment Function
 PLL tuning system for precise frequency tuning

 Built-in Speaker
 192 Pixels X 192 Pixels Back Light LCD

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 Menu selection methodfor 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

Functions (section 3)

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

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Specifications

Frequency

Amplitude

Frequency Range 100 kHz to 2,000 MHz

Resolution Min. 6.25KHz Multiples

Accuracy

W-FM / N-FM

/ AM / SSB

Step Range

Span Range

Frequency

TXO : ± 3 PPM / Display : ±1.5 PPM

Wide FM :Approx. 180 kHz @-6 dB
Narrow FM :Approx. 12.5 kHz @-6 dB

AM/SSB :Approx. 2.4 kHz @-6 dB
AM, SSB, Narrow FM : 6.25kHz, 12.5kHz
Wide FM : 6.25~125kHz(Multiple of 6.25kHz)

125~2500kHz (Multiple of 125 kHz)

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

20~400MHz(Multiple of 20 MHz)

Center, Start/ Stop,Span

Selection Mode

Measurement

-45 dBm to –110 dBm

Range

Average noise

Level

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

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Amplitude Units dBm, dBmV, dBuV

Reference Level

Accuracy

Reference Level

±3.0 dB @ under 600KHz
±2.0 dB @ over 600KHz

0 dBm to –80 dBm

Range

Log Scale

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

Internal Attn 10 dB
Internal Attn

±1.0 dB (@25 ℃)

Accuracy

Specifications

Sweep

Memory

Display

Speed Min. 500 msec

Trigger Source Narrow FM / Wide FM / AM / SSB

Trigger Mode

Trigger Level TTL Level
Marker Mode Maker / Delta Maker

Trace & Setup

Storage

Type Mono STN LCD

Display Resolution 192 Pixels X 192 Pixels

LCD Light On / Off

Free Run / Single Run / Continuous Wave
/ Squelch Run

Max 100 Waveforms and 100 States

Frequency
Counter

Frequency Range 35 MHz to 2,000 MHz

Resolution 7 Digits

Accuracy

Sampling Time 1 sec

Input Sensitivity

Input Impedance

Max. Input Voltage 5 Vrms Max.

±50 PPM ±1 COUNT

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

50 Ohms

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Specifications

increased in some point of time. The B&K Precision 2640

Spectrum
input Port

Operation
Environment

Power

Source

RF Input Connector N type Female, 50 Ohms

Max Input Level Max. +10 dBm, 5Vrms

Operating

Temperature

Humidity 35 RH to 85 RHP

Storage Temp.

Battery Power

Source

Battery

Specification

0 ℃ to 40 ℃

10 ℃ to 50 ℃

AA Type Ni-MH Rechargeable Battery × 6
PCS

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

SMPS Type AC Adapter (DC 12 V Output)

Adapter

Car-Adapter (DC 12 V Output)

Auto Power On/Off

A

The B&K Precision 2640 can be quickly recharged using Ni-MH

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

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

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 built­in 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.

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Specifications

Physical
Specifications

Standard
Accessories

Dimension

Weight

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

Specifications and information is subject to change without notice.
For the most current product information please visit www.bkprecision.com

4 ”(W)×9 ”(H)×1.8 ”(D)
Approx. 0.66 Kg(1.45 lbm)

(including Antenna, except Battery)

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Instrument overview (section 4)

Front Panel

Front Figure

Run

Mod e

Sweep

GHz

MHz

4 5 6

7 8 9

Shift

0 .

Power21Menu3Enter

Marker

kHz

DEL

LCD

Key Pad

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The LCD screen can display the signal input level, frequency and

amplitude values, andthe 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

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 setupthe 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

Rear Figure

 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

Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176

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Side Panel

Side Figure

 DC Input Jack

User can use this DC input jack for power supply and battery
charging with SMPS type AC/DCAdapter or Car Adapter.

 RS-232C Connector (8 pin mini DIN connector)

User can use this RS-232C connector for PC communication with
serial cable.

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Top Panel

Top Figure

 Input Connector for Signal Level

User can connect the antenna or coaxial cable to this connector on
the system. The maximum input voltage is 5 Vrms.

 Input Connector for Frequency Counter

User can connect the signal source to be measured to this connector.
The maximum input voltage is 5 Vrms.

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 Volume Control

User can control the volume of audio output. To increase the volume
of audio output, turn the Volume Control to clockwise direction.

 Earphone Jack

Basic operation (section 5)

Before Power ON

How to insert and charge the AAType Ni-MH rechargeable batteries?
For the insertion of batteries, please release the screw on the battery

cover on the bottom of the instrument. And put in AA Type Ni-MH
rechargeable batteries (Total 6PCS).

To charge the batteries after inserting batteries, connect the DC cable

plug of SMPS type adaptor to DC jack of system (DC output: 12V).

Battery charging will begin after DC cable in connected.
At this time, if user turns on the power of system, the battery icon on

the display window is displayed and blinking. And if the charging of
batteries is finished, the blanking of battery icon will stop and only be

displayed.

Connection
for Input
Level

To measure the input level of RF signal, connect the antenna or

coaxial cable to N-type connector of system (marked ANT)

 Input Connector for RF Signal Level:

User can connecttheantenna or coaxial cable to this connector on
the system. The maximum input voltage is 5 Vrms

 Input Connector for Frequency Counter:

User can connect the signal source to be measured to this
connector. The maximum input voltage is 5 Vrms.

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Power ON

To turn on the system power, Press the key.
The system power is ON. The last displayed screen from the previous

usage will bedisplayed(Previous setup status).

This system supports the simple manipulation with frequentlyused
function keys. To use this simple manipulation, push the key and

push the numerical key. The frequently used function is marked on the
numerical key below.

The upper right icons are the basic mode and the mode.
User can select the shift mode or basic mode by pressing the

key.

If the LCD screen is not readily visible, user can adjust the LCD

contrast to see LCD screen.

To adjust the LCD contrast, push the key. And push the No. 8

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(LCD Contrast) key. Until user’s desired LCD contrast is adjusted,

use the Up/Down keys and Knob key.

To turn on the LCD light, push the key. And push the No. 7 (LCD

Light) key. Then the LCD light is turned on.

And to turn off the LCD light, push the key. And push the No. 7

(LCD Light) key (Toggle ON/OFF).

For the LCD display, refer to below figure.

Turn on power ofinstrument

Power On

STEP 1

- Push the Key.

STEP 2 (Adjust to LCD Contrast)

- Push the Key.

- Push the LCD CONTRAST (No.8) Key.

- Adjust to desired LCD Contrast using the Up/Down Keys
or Knob Key.

STEP 3

- Push the Dot Key and will be taken out of Menu.

STEP 4 (LCD Light On/Off)

- Push the Shift Key

STEP 5

- Push the No. 7 (LCD Light) Key

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