BK Precision 2640 User Manual
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BK Precision 2640 User Manual

2.0ghz rf field strength analyzer
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  • Page 3 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.
  • Page 4 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.
  • Page 5  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.
  • Page 6 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).
  • Page 7 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.
  • Page 8 Accessories (included) Carrying Case AC Adaptor Carrying Strap RS-232 Cable Coaxial Cable N-BNC Power Cable Ear Phone Adaptor Ni-MH(Rechargeable Software CD User’s Manual Antenna Battery) 6PCS...

  • Page 9: Table Of Contents

    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…………………………..………………………...
  • Page 10 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.

  • Page 11: Introduction

    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.

  • Page 12: Features

    Features (section 2) 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 ...

  • Page 13: Functions

    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 ...

  • Page 14: Specifications

    Specifications Frequency Range 100 kHz to 2,000 MHz Frequency Resolution Min. 6.25KHz Multiples TXO : ± 3 PPM / Display : ± 1.5 PPM Accuracy Wide FM : Approx. 180 kHz @-6 dB W-FM / N-FM Narrow FM : Approx. 12.5 kHz @-6 dB / AM / SSB AM/SSB : Approx.
  • Page 15 Specifications Speed Min. 500 msec Sweep Trigger Source Narrow FM / Wide FM / AM / SSB Free Run / Single Run / Continuous Wave Trigger Mode / Squelch Run Trigger Level TTL Level Marker Mode Maker / Delta Maker Trace &...
  • Page 16 Off/ 5 min./ 10 min./ 20 min./30 min. Auto Power On/Off 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.
  • Page 17 Specifications 4 ”(W)×9 ”(H)×1.8 ”(D) Physical Dimension Specifications Approx. 0.66 Kg(1.45 lbm) Weight (including Antenna, except Battery) Standard Antenna (Receive Only), SMPS Type AC Adapter, Fuji-AA type NI-MH Accessories 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.

  • Page 18: Instrument Overview

    Instrument overview (section 4) Front Panel Front Figure Ru n M od e Sweep Ma rke r M Hz k Hz Shift Power Menu Enter The LCD screen can display the signal input level, frequency and amplitude values, and the relative system data ...
  • Page 19 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...

  • Page 20: Rear Panel

    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.

  • Page 21: Side Panel

    Side Panel Side Figure  DC Input Jack User can use this DC input jack for power supply and battery charging with SMPS type AC/DC Adapter or Car Adapter.  RS-232C Connector (8 pin mini DIN connector) User can use this RS-232C connector for PC communication with serial cable.

  • Page 22: Top Panel

    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.

  • Page 23: Basic Operation

    Basic operation (section 5) Before Power ON How to insert and charge the AA Type 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 6 PCS).

  • Page 24: Power On

    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 be displayed (Previous setup status). This system supports the simple manipulation with frequently used function keys. To use this simple manipulation, push the key and push the numerical key.

  • Page 25: Turn On Power Of Instrument

    Turn on power of instrument STEP 1 Power On - 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.

  • Page 26: Description Of Operation Screen

    Description of operating screen Display 1. ICON window 2. Frequency Input window 3. Wavy pattern window 4. Squelch window 5. Marker window 1. ICON window ⓐ ⓑ ⓒ ⓓ ⓔ ⓕ ⓖ...
  • Page 27 Description of operating screen Shift State Indication Icons are changed Normal state by shift key Shift Input state Reception Mode State Indication Wide Frequency Multi Mode Narrow Frequency Multi Mode Amplitude Modulation Mode Icons are changed Single side band Multi Mode by Mode key Sweep Mode State Indication Free Run...
  • Page 28 Description of operating screen Buzzer On/off Indication Buzzer Off Icons are changed by Dot(Buzzer) key Buzzer On ⓖ Battery Residual Indication Full Empty 2. Frequency Input window ⓐ Frequency Value Indication ⓒ LEVEL ATTN...
  • Page 29 Description of operating scene Center Frequency Indication NONE Maker 1 Frequency Indication Maker 2 Frequency Indication Frequency Counter Value Indication Indication of Frequency Value of each Mode Level Value Indication Indication of Level Value of each Mode.. ⓒ Level Unit Can be established in Menu.
  • Page 30 Description of operating screen ⓒ 3. Wavy pattern window Indication Reference Indication to Vertical Level Value of Value Screen Wavy pattern window. Level Value [Please refer to Screen Level establishment in Basic operation Resolution of Screen Explanation for further details] Level Value Marker Indication Center...
  • Page 31 Description of operating screen 4. Marker Window Center Marker, Marker 1, When Squelch Marker Center Frequency CENT SPAN Span Frequency STEP Step Frequency When Delta Marker MKR1 Marker 1 Frequency LEV1 Marker 2 Level Value Marker1- Marker2 Level Value DIFF...

  • Page 32: Reception Mode

    Reception Mode Reception Mode has a total of (4) four modes the Demodulation will receive. Wide Frequency Modulation Wide-FM Wide FM RBW(Resolution Bandwidth ) 180 kHz Narrow Frequency Modulation Narrow-FM Narrow RBW(Resolution Bandwidth ) 12.5 kHz Amplitude Modulation SSB /AM RBW(Resolution Bandwidth ) 2.4 kHz Single Side Band Modulation SSB /AM RBW(Resolution Bandwidth ) 2.4 kHz Wide FM should be used to interpret a large Signal of Band width,...

  • Page 33: Sweep Mode

    Sweep Mode Sweep Mode is used to set up operation characters which interpret Input. Every each operation character is same as follows. Analyzing execution consecutively Free Run Only 1 time Execution Single Run Run by higher than Squelch level Squelch Run (Similar Trigger Mode of Oscilloscope) Establish this mode by pushing the Sweep (kHz) Key and then...

  • Page 34: Set Up Span

    Set up Span The span is able to be set 1MHz to 400MHz. It has two settings – 1MHz step up to 20MHz and 20MHz step from 20MHz to 400MHz. If other numeral keys than MHz unit key is pushed, the input unit will be set to the nearest times by rising automatically.

  • Page 35: Frequency Input

    Frequency Input Chosen Reception Mode, Sweep Mode and Span are showed on the top center of LCD. At first, choose Reception Mode and Sweep Mode to get a sense of the Frequency Bandwidth and a specific feel for analyzing. Choosing Frequency Value is a way to inputting Center and Start/Stop Frequency.
  • Page 36 Frequency Input STEP 1 Window - Check the state of Frequency Input Window. Display You can input Center Frequency when state of Frequency Input Window is CENT STEP 2 - Input a desired Center Frequency STEP 3 - Input Unit by using the Run , Mode and Sweep STEP 1...

  • Page 37: Adjust Screen Level

    Adjust screen Level Settle Top Level- Reference Level and Level Resolution to be Display on scene. “RLEV” is an abbreviation of Reference Level. Choose through the Up/Down Keys and establish to use the Enter Key. Top Level in verticality axis would be changed established Value.

  • Page 38: Run-Scanning

    Run-Scanning Run-Scanning is a process interpreting Frequency according to established Frequency Bandwidth and Span. And Run- scanning processes operate by establishing Sweep Mode Run-Scanning process would accomplished by establishing Reception Mode and Sweep Mode (See above)

  • Page 39: Marker

    Marker B&K Precision 2640 has Center Marker, Marker 1, Delta Marker (Marker1 and Marker2) and Squelch Marker. Each Marker Mode can define a state of Marker ICON into the top-left Marker Mode ICON. Marker Mode Marker ICON ICON Center Marker...
  • Page 40 Marker Center Marker Center Marker is not a Mode the user will choose when using Mark Mode in Basic operation. When inputting Start Frequency and Stop Frequency, Center Frequency information will appear automatically. The state is not indicated on the Mode ICON is Center Mode. Frequency and Level on Center Frequency will be indicated on Frequency Input Window.
  • Page 41 Marker Marker 1 To use Marker 1 , press the Marker(DEL) key in Center Marker status. When it turns to Marker 1 mode, Marker mode icon is changed to . And frequency input window is changed to Center Marker to Marker 1 To move the Marker 1, use the Up/Down keys, or the Knob key.
  • Page 42 Marker Delta Marker Press the Marker (DEL) Key until the Marker mode icon is changed to Delta Marker in the display window. And in this case, Marker 2 is added. The Marker mode is the total four modes. And the changed order of Marker mode is as below: Center ...
  • Page 43 Marker STEP 1 - Press the Marker (DEL) Key. - Check the Delta Marker mode in the display window STEP 2 - To move the Marker 1 to wanted plot point, please use the Up/Down keys, or Knob key. - Then, the frequency value and level value of Marker 2 are displayed in the frequency input window.
  • Page 44 Marker Squelch Marker To know the magnitude of frequency, user can use the Squelch Marker. And the Squelch Marker is the right Marker on the vertical axis of the display window. Also, user can set up the Squelch Marker for setting the Squelch Level of Sweep mode and speaker output for a larger signal than Squelch Level through modulation for audio frequency range.
  • Page 45 Marker STEP 1 - Press the Marker key. - Check the Squelch Marker mode. STEP 2 - Move the Squelch Marker to wanted point using the Up/Down Keys or Knob Key. - The squelch value is displayed in the lower right display window.

  • Page 46: Power Meter

    Power Meter Single Power Meter Function Shift To use the Single Power Meter Function, at first push the and then check the icon that is changed. Please push the numeral 4(Single) key. After inputting the frequency to measure, input the unit. STEP 1 - Push the Shift Key.
  • Page 47 Power Meter Multi Power Meter Function To use the Multi Power Meter Function, at first push the Shift and then check the icon that is changed. Please push the No. 5(MULTI) key. Assign any number of frequencies to measure within 1 to 9. After inputting the frequency to measure, input the unit.
  • Page 48 UNIT UNIT Change Function STEP 1 - Push the Shift Key. STEP 2 - Push the No.6 (UNIT) key. STEP 3 - Using the Up/Down Key or knob key, move to the measuring unit and then set up by Enter key.

  • Page 49: Setting Of Attenuator

    Setting of Attenuator The internal attenuator is used for maximum input signal -45dBm with Setting for Menu function. Internal or To set the internal attenuator, press the Shift key to change the External upper right icon And press the No. 9 (ATTN) key.

  • Page 50: Lcd Light

    LCD Light The LCD Light is designed to ease the use of the instrument in a dark location. Press the Shift key to change the upper right icon And press the No. 7 (LCD Light) key. *The Power ON/OFF of the LCD Light is toggle STEP 1 - Press the Shift STEP 2...

  • Page 51: Lcd Contrast

    LCD Contrast The function of LCD contrast is to adjust the contrast for the remained battery capacity. Push the Shift key to change the upper right icon And push the No. 8 (LCD Contrast) key. The LCD contrast is adjusted by using the Up/Down keys or Knob key.

  • Page 52: Buzzer On/Off

    Buzzer ON/OFF User can set the Buzzer ON/OFF (Toggle ON/OFF) Push the Shift Key. Then the Icon of left upper window is changed to shift icon And press the Dot Key. And press the Dot Key. STEP 1 - Press the Shift STEP 2 - Press the Dot...

  • Page 53: Save/Load

    Save/Load The function of Save/Load is for the Waveform and Setup Statuses. The function of Save is for concurrently saving the Waveform and Setup Status in memory. And the saved Setup Status in memory includes the following information: Reception mode, Sweep mode, Frequency range, Step value, and Span value.
  • Page 54 Save/Load STEP 1 - Press the Shift STEP 2 - Press the Enter STEP 3 - To save the waveform or setup status, a name with at least 7 characters is required. - To select the first character. Use the Up/Down keys.
  • Page 55 LCD contrast and LCD light states are not saved. Save/Load Load STEP 1 - Press the Shift STEP 2 - Press the Enter STEP 3 - To save the waveform or setup status, a name with at least 7 characters is required.
  • Page 56 Save/Load Delete STEP 1 - Press the Menu STEP 2 - To select the DELETE, use the Up/Down keys or Knob key and press the Enter STEP 3 - To delete the saved data, select the user’s saved data using the Up/Down keys or Knob key.

  • Page 57: Frequency Counter

    Frequency Counter Select the F.counter under Main Menu - function The input connector for the frequency counter is BNC connector. When the input level is inputted into the Frequency Counter, the measured frequency value is displayed in the frequency input window Input level is same as below.
  • Page 58 Frequency Counter STEP 1 - Press the Menu STEP 2 - To select the FUCTION, use the Up/Down keys or Knob key and press the Enter key. - Then sub menu is opened. STEP 3 - To select the F. COUNTER (Frequency Counter), use the Up/Down keys or Knob key and press the Enter STEP 4...

  • Page 59: Power Source

    How to use and replace the battery  The power system of B&K Precision 2640 uses the Ni-MH rechargeable batteries. Then, the power system supports fast charging. The charger for the Ni-MH batteries is controlled by the voltage and temperature of the battery cells.

  • Page 60: Level Unit

    Level Unit The setting for level unit can be set up in the Menu. Setting of The level unit can be set up as below the Unit □dBm □dBuV □dBmV STEP 1 - Push the Menu STEP 2 - To select the LEVEL UNIT, use the Up/Down keys or Knob key and push the Enter key.

  • Page 61: Reset

    Reset The function of Reset is for initializing the memory or system. The three kinds of resets are supported. And these resets are run through the Menu Preset  System Reboot for initial setup status. (Center Frequency, Span Frequency, Marker and etc) Memory CLR ...

  • Page 62: Baud Rate

    Baud Rate The setting of the baud rate is for the transmission speed. Setting of The Baud Rate between PC and system is same as below. the Baud Rate 115,200 BPS (Default) 57,600 BPS 38,400 BPS 19,200 BPS 9,600 BPS 4,800 BPS STEP 1 - Push the Menu...

  • Page 63: Connection For Pc

    The function of CONNECT PC is for connecting to a PC. Setting of First, the GUI program is run on the PC. And the serial cable is connected between PC and B&K Precision 2640. Connection Next, run the REMOTE PC from Menu.

  • Page 64: Auto Power

    Auto Power The Auto Power function should be used to conserve system power. When the power OFF time is enabled (“NONE” is not selected), the power source will be turned off automatically if the user dose not use the system for the auto power OFF period of time. The auto power OFF time is same as below NONE 05MINUTES...

  • Page 65: Offset

    Offset Level Offset compensates for any loss due to the cabling. Offset adds the value of +Offset to all values of measurement. STEP 1 - Press the Menu key twice STEP 2 - Move the cursor on PC Connect using the Up/Down Keys or knob Key.

  • Page 66: Menu

    Menu There are two modes. One is Multi key function with the Shift and the other is to select other functions. It can select the functions using multi key and in Menu. The functions that could be selected in Menu mode is as blow Level Unit Reset Band Rate...
  • Page 67 Menu STEP 1 - Push the Menu key twice STEP 2 - To select wanted function, use the Up/Down Keys or the Knob Key. STEP 3 - Push the Enter STEP 4 - After selecting function of lower item or On/Off, push the Enter STEP 5 - Exit the Menu after pushing the Menu Key twice.
  • Page 68 Menu Spectrum Set up the functions of Frequency Counter Spectrum and frequency Function counter. (note: TEST TEST Mode Mode is for Factory use Single Power Meter only) Multi Power Meter N-FM Reception Mode. W-FM It’s possible to set up with Reception the Shift Key (Shift...
  • Page 69 Menu Restarting the System and Pre Reset clear all parameters for set up Memory CLR Delete the stored data Reset All Reset – restarting the System INI system and delete the stored data 115,200 BPS 57,600 BPS Select the speed of serial 38,400 BPS Band Rate communication between the...

  • Page 70: System

    System There are modes that select the function of Multi key using the Shift Key and the other functions. Functions can be selected using the multi key and the Menu. The functions that can be selected in Menu mode are as blow. To exit from Menu or System, push the Key or push the Dot key, this will move you to lower menu items or to higher menu items.
  • Page 71 System STEP 1 - Press the Menu STEP 2 - Press the Menu Key once more. STEP 3 - To select desired function, use the Up/Down Keys or the Knob STEP 4 - Press the Enter STEP 5 - After selecting a lower item function or On/Off, push the Enter STEP 6 - Push the Menu Key once to exit the System...
  • Page 72 System None 05 Minutes Select auto power saving Auto Power 10 Minutes mode. 20 Minutes 30 Minutes Select Buzzer On/Off. It could be set up with the Shift Buzzer Key (Shift Key Icon is upside down. Please check all icons to fix this.) Select LCD Light On/Off.

  • Page 73: Description Of Key Operating

    Description of key operating (section 6) Run [GHz] Instruction to start scanning frequencies  After power on, this button will work as it did under the most recent setup, or when Squelch Run or Single Run functions are active. [Please refer to the Scan in description of basic operation details if needed] Units input function can be used to set up Start/ Stop/ Scan/ ...

  • Page 74: Sweep [Khz]

    Sweep [kHz] Selecting Sweep Mode  This button selects the Sweep Mode such as FREE Run SQUELCH Run and SINGLE Run [Please refer to the Sweep Mode section for a detailed description of basic operation.]  The units input function can be used to set up Start/ Stop/ Scan/ Center frequencies.

  • Page 75: No. 1 [Start/Stop]

    No. 1 [Start/Stop] Press the No. 1 key to input the value of 1.  To input the value of numeral 1 in the Start/Stop/Scan/Center frequencies, please use the No. 1 Key. Pressing No, 1 key and the Shift Key will active the ...

  • Page 76: No. 3 [Level]

    No. 3 [Level] Push the No. 3 key to input the value of 3.  In order to input the value of numeral 3 in the Start/Stop/Scan/Center frequencies, push the No. 3 Key. Display Level Adjustment Function by pushing Shift ...

  • Page 77: No. 5 [Multi]

    No. 5 [MULTI]  Push the No. 5 key to input the value of 5. Push the No. 5 Key to input the value of numeral 5 in the Start/ Stop /Scan/ Center frequencies.  Multi Power Meter Adjustment Function after pushing Shift On pushing the Shift key and then pushing the No.

  • Page 78: No. 7 [Lcd Light]

    No. 7 [LCD Light]  Push the No. 7 key to input the value of 7. When inputting the value of numeral 7 in the Start/Stop/Scan/Center frequencies, the No. 7 Key is used LCD Light Function after pushing the Shift ...

  • Page 79: No. 9 [Attenuator]

    No. 9 [Attenuator] Push the No. 9 key to input the value of 9.  To input the value of numeral 9 in the Start/Stop/Scan/Center frequencies, the No. 9 Key is used Attenuator Setup Function after pushing the Shift  By pushing the Shift key and then pushing the No.

  • Page 80: Shift

    Shift Using the Function Key  The Shift Key dose not performs any function by itself. The Shift Key can be used with functions printed below the numeral keys. If the shift key is pressed twice, CENT/SPAN located on bottom of display is changed to START/STOP.

  • Page 81: Menu [Load]

    Menu [Load]  Menu Function Various functions can be selected after entering Menu item. At the Menu item, pushing the Menu Key once more; will activate the System item. [Refer the section of Menu and System of basic operation if need more detail] Load Function after pushing the Shift Key.

  • Page 82: Up/Down Keys And Knob Key

    Up/Down Keys and Knob Key Up/Down Keys and Knob Key Functions  Movement of Marker, Menu items and System After setting the Span, the Span can be changed using the Up/Down key. After setting the Reference level, the Reference level can be changed using Up/Down key.
  • Page 83 Service Information Warranty Service: Please return the product in the original packaging with proof of purchase to the address below. Clearly state in writing the performance problem and return any leads, probes, connectors and accessories that you are using with the device. Non-Warranty Service: Return the product in the original packaging to the address below.
  • Page 84 B&K Precision Corporation 22820 Savi Ranch Parkway Printed in Korea Yorba Linda, CA 92887 Copyrights © B&K Precision Corp. 2008 www.bkprecision.com...

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