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Products » By Manufacturer » Protek - Test & Measurement Devices » Counters » B818 - 1GHz Multifunction Counter
B818 - 1GHz Multifunction Counter
" 10Hz to 1GHz measurement range
" Frequency, Period and Totalize and Self Check modes
" 8 digit LED display
" X1 and X10 Input Attenuator
" 10 PPM temperature stability (oven controlled)
" Low power consumption and light weight
" 25mV sensitivity


  •  Specification
    • Frequency Measurement
    Channel A Input
    Frequency Range 10Hz to 10MHz Direct
    10MHz to 100MHz Prescaled
    Resolution Direct: 1Hz, 10Hz, 100Hz (range dependent)
    Prescaled: 10Hz, 100Hz, 1000Hz (range dependent)
    Gate Time 0.01s, 0.1s, 1s switch selectable
    Accuracy ?1 count ?(timebase error) X frequency
    Coupling AC
    Frequency Measurement
    Channel B Input
    Frequency Range 100MHz to 1GHz
    Resolution 100Hz, 1KHz, 10KHz, range dependent
    Gate Time 0.027s, 0.27s, 2.7s in 3 decade switch settings
    Accuracy ?1 count ?(timebase error) X frequency
    Coupling AC
    Period Measurement
    Channel A Input
    Range 4?s to 100ms
    Period Multiplier X1 to X100 in 3 decade switch settings
    Resolution 1ns, 10ns, 100ns range dependent
    Accuracy ?1 count ?(timebase error) X Period
    Totalized Measurement
    Channel A Input
    Frequency Range 10Hz to 10MHz
    Count Capacity 0 to 99,999,999
    Resolution ?1 input count
    Input Characteristics
    Channel A
    Sensitivity 10MHz Range: 25mV RMS (10Hz to 8MHz);
    50mV RMS (8MHz to 10MHz)
    100MHz Range: 25mV RMS (10MHz to 80MHz);
    50mV RMS (80MHz to 100MHz)
    Attenuation X1 or X10
    Input Impedance 1MW (C = < 35pF)
    Max. Voltage 250V DC and AC RMS
    Input Characteristics
    Channel B
    Sensitivity 20mV RMS
    Impedance 50W
    Max. Input Voltage 3V DC or AC RMS
    Timebase
    Frequency 10MHz & 3.90625MHz
    (Temperature controlled oven)
    Stability Short Term: ?3x10-9 for 1 Sec
    Long Term: ?2x10-5 per month
    Temperature: ?1x10-5, 0 to 40?C
    Line Voltage: ?1x10-7 for a 10% change in line voltage
    Warm-up Time 20 minutes
    General Specifications
    Display 8 Digit LED with annunciators and decimal point
    Power Requirements AC line voltage: 100/120/220/240V ?10%
    Frequency 48Hz to 66Hz
    Power Consumption Approx. 12VA
    Operating Temperature -5 to 50?C
    Size 3.0" H ? 8.0" W ? 10.0" D
    Weight 7 lbs
    Supplied Accessories Manual, Power cord, BNC to Alligator clip input cable
    To request more information, please fill the form below.
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