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BK 1856D Multifunction Counter Frequency, Period, Totalize 3.5GHz
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BK 1856D Multifunction Counter Frequency, Period, Totalize 3.5GHz


BK 1856D
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 BK 1856D

Features:
  • Wide measuring range up to 3.5GHz
  • Bright nine digit LED display
  • Period mode for accurate low frequency measurement
  • Totalize mode permits counting of individual events
  • Accurate TCXO time base


  Description

The model 1856D provides versatility and reliability for a broad spectrum of laboratory and service applications.


  Models, Options, & Accessories


Model Description List Price Sale Price
1856D 3.5 GHz Multifunction Counter (Frequency, Period, Totalize)
$530.00 
Model Accessories List Price Sale Price
AT 21 Right Angle Telescoping Antenna, BNC Connector
$35.00 
CC-150 BNC to BNC, RG/58U, 48"
$10.40 
CC-21 BNC Breakout to Alligator Clips
$11.50 
CC-41A BNC to BNC, RG58C/U, 36"
$10.40 
LC 40 Function Generator Carrying Case
$88.00 


  Specifications

Input A Characteristics
Frequency Range 0.1 Hz to 100 MHz (DC coupled)
30 Hz to 100 MHz (AC coupled)
Sensitivity 30 mV rms
Coupling AC or DC selectable
Impedance 1 MΩ resistance shunted by < 40 pF
Attenuator x1 or x10 switch selectable
Low Pass Filter -3 dB point at approx. 100 KHz, switch selectable
Accuracy ± Time base error ± resolution (Table 1)
Resolution and Number of Displayed Digits
Time Base Selector INT EXT INT EXT INT EXT INT EXT
Gate Time 0.01S 0.1S 1S 10S
Number of Display Digits 5 6 6 7 7 8 8 9
Frequency (Input A) Resolution
0.1 Hz-0.99 Hz 10 µHz 1 µHz 1 µHz 0.1 µHz 0.1 µHz 10nHz 10nHz 1nHz
1 Hz-9.9 Hz 0.1mHz 10 µHz 10 µHz 1 µHz 1 µHz 0.1 µHz 0.1 µHz 10nHz
10 Hz-99 Hz 1 mHz 0.1mHz 0.1mHz 10 µHz 10 µHz 1 µHz 1 µHz 0.1 µHz
100 Hz-999 Hz 10mHz 1 mHz 1 mHz 0.1mHz 0.1mHz 10 µHz 10 µHz 1 µHz
1 KHz-9.9 KHz 0.1 Hz 10 mHz 10 mHz 1 mHz 1 mHz 0.1 Hz 0.1 mHz 10 µHz
10 KHz-99 KHz 1 Hz 0.1 Hz 0.1 Hz 10 mHz 10 mHz 1 mHz 1 mHz 0.1mHz
100 KHz-999 KHz 10 Hz 1 Hz 1 Hz 0.1 Hz 0.1 Hz 10 mHz 10 mHz 1 mHz
1 MHz-9.9 MHz 100 Hz 10 Hz 10 Hz 1 Hz 1 Hz 0.1 Hz 0.1 Hz 10 mHz
10 MHz-99 MHz 1 KHz 100 Hz 100 Hz 10 Hz 10 Hz 1 Hz 1 Hz 0.1 Hz
100MHz 10 KHz 1 KHz 1 KHz 100 Hz 100 Hz 10 Hz 10 Hz 1 Hz
Max. Input Voltage Level
Period Range 10 nS to 10 S
Display n/µ/m (nano/micro/milli) Sec. with decimal point
Total Range 10 Hz to 30 MHz
Capacity 0 to 999 999 999, OVER FLOW: "OF"
RPM Range 600 to 600 x 106 RPM, OVER FLOW: "OF"
Input C Characteristics
Frequency Range 80 MHz to 3.5 GHz
Sensitivity 15mV from 80 MHz to 2000 MHz
20mV from 2000 MHz to 3.0 GHz
30mV from 3.0GHz to 3.2GHz
50mV from 3.2GHz to 3.5GHz
Coupling AC only
Impedance 50 Ω ±5%
Max. Input Level 3 V rms sine wave
Resolution and Number of Displayed Digits
Time Base Selector INT EXT INT EXT INT EXT INT EXT
Gate Time 0.01S 0.1S 1S 10S
Number Of Displayed Digits 5 6 6 7 7 8 8 9
Frequency (Input C) Resolution
100 MHz-999 MHz 10 KHz 1 KHz 1 KHz 100 Hz 100 Hz 10 Hz 10 Hz 1 Hz
1 GHz-3.7 GHz 100 KHz 10 KHz 10 KHz 1 KHz 1 KHz 100 Hz 100 Hz 10 Hz
Time Base Characteristics
Type TCO (Temperature Controlled Oscillator)
Frequency 10.000000 MHz
Stability ±1 PPM (±1 count)
Line Voltage Stability Less than ± 1 PPM with ± 10% line voltage variation
Temperature Stability ±5 PPM from 0°C to 50°C
Max. Aging Rate ±5 PPM/year
Int. Std. Out 10 MHz (Internal Standard Frequency Output)
Level 1 V p-p or more. TTL (10TTL)
Capacitance 15pF
Ext. Std. In 10 MHz (External Standard Frequency Input)
Level 1.5Vrms to 5Vrms
Impedance Approx. 600Ω
Display Characteristics
Display Nine Digit 0.56" LED with M (Mega) or K (Kilo) Hz; nano, micro, or milli (n/µ/m) Sec.; GT (GATE TIME); H (HOLD); and OF (OVERFLOW) indicators. FUNCTION and GATE TIME are user selected. OF display is shown when the count exceeds 999 999 999
Hold In the FREQUENCY, PERIOD, TOTAL, RPM modes, measurement in progress is stopped; and the last complete measurement is displayed. When HOLD is released, a new measurement begins
Gate Time Depending on input frequency
< 10 mS - Somewhere between 0.9 and 9mS
< 0.1 S - Somewhere between 9 and 90mS
< 1 S - Somewhere between 90 and 900mS
< 10 S - Somewhere between 0.9 and 9S
Note Last measurement display will remain for 10 seconds after signal off
General
Dimensions (WxHxD) 9.4 x 3.5 x 10.6" (240 x 90 x 270mm)
Weight (Approx) 5.5lbs. (2.5 kg.)
Power 115VAC±10%, 50-60 Hz, 9 W
Plug and Socket 3 wire ac power plug and 3 wire outlet
Fuse 500 mA/ 250V F type
Temperature 0 °C to +40 °C (Accuracy Specified at 23 °C ± 5 °C)
Humidity up to 85% RH (Relative Humidity) to 40 °C without temperature extremes causing condensation within the instrument
Temperature -20°C to +70°C
Humidity below 85% RH
Insulation Category II Portable equipment of local level
Pollution Degree 2
Protection to IEC 529 Ordinary


   
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