A calibration by Custom-Cal is performed by engineers with extensive OEM experience. We have the expertise and the necessary standards to perform the BERKELEY NUCLEONICS CORPORATION 645 Calibration, onsite calibration may be available. We specialize in quick turnaround times and we can handle expedited deliveries upon request.

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For Sale New, List Price $1,425.00   BERKELEY NUCLEONICS CORPORATION 645   Description / Specification:   Spec Sheet 
BERKELEY NUCLEONICS CORPORATION 645 50 MHz Function/Arbitrary Waveform Generator

The BNC 645 50MHz Function/Arbitrary Waveform Generator delivers many advanced features and user modes. New DDS+ technology embraces advancements in the semiconductor industry and leverages state-of- the-art components for both standard and complex functions.
The Model 645 can generate variable-edge pulses at rates up to 10MHz. From the front panel or through remote communications, the user may vary the period, pulse width and amplitude. The pulse parameters may be stored in the unit or on your computer for later recall.
The BNC 645 offers 14-bit resolution and a 125 MSa/s sampling rate, giving users enough control of their waveforms for most applications. It will storage of up to 5 waveforms concurrently ( 4 waveforms (4 x 256K points) in nonvolatile memory and 1 waveform in volatile memory.

Standard Wave forms: Sine, Square, Ramp, Triangle, Pulse, Noise, DC .
Built-in arbitrary waveforms: Exponential Rise and Fall, Negative ramp, Sin (x)/x, Cardiac.
Modulation Types: AM, FM, PM, FSK, PWM, Sweep and Burst.

Waveform Characteristics.
Frequency: 1 µHz 50 MHz.
Amplitude: 0.1 dB (< 100 KHz).
Flatness: 0.15dB (<5MHz).
Total Harmonic Distortion: DC to 20 KHz, Output ≥ 0.5Vpp THD+N ≤0.06%.
Frequency: 1 µHz to 25 MHz .
Rise/ Fall time: < 10 ns .
Overshoot: < 2%.
Variable Duty Cycle: 20% to 80% (to 10MHz), 40% to 60% (to 25 MHz).
Asymmetry: 1% of period + 5 ns (@ 50% duty).
Ramp, Triangle
Frequency: 1 µHz to 200 KHz.
Linearity: < 0.1% of peak output.
Symmetry: 0.0% ~ 100.0%.
Bandwitdh: 20 MHz Typical.
Frequency: 1 µHz to 10MHz.
Length: 2 to 256 K.
Resolution: 14 bits (Including sign).
Sample Rate: 125 MSa/s.
Min Rise/ Fall: 30 ns typical.
Linearity: < 0.1% of peak output.
Settling Time: <250 ns to 0.5% of final value.

Common Characteristics.
Frequency Resolution: 1µHz.
Amplitude Range: 10mVpp to 10Vpp in 50Ω, 20mVpp to 20 20Vpp in Hi-Z.
Amplitude Accuracy (at 1KHz): ±1% of setting ±1mVpp.
DC Offset Range (Peak AC + DC): ±2% of offset setting, ±0.5% of amplitude setting.


Related Bench Equipment Terms and Definitions. For a complete list go to our  Terms and Definitions Page.

dBc (decibels relative to the carrier) is the power ratio of a signal to a carrier signal, expressed in decibels. If the dBc figure is positive, then the relative signal strength is greater than the carrier signal strength. If the dBc figure is negative, then the relative signal strength is less than carrier signal strength.

Load Regulation
Load regulation is the capability to maintain a constant voltage (or current) level on the output channel of a power supply despite changes in the supply's load (such as a change in resistance value connected across the supply output).

Power Linearity
When changing the power level and measuring the differences (in dB) between actual and displayed power levels, the power linearity is ± half the span (in dB) between the maximum and the minimum value of all differences.

Settling Time
Settling time of an output device is the time elapsed from the application of an ideal instantaneous step input to the time at which the amplifier output has entered and remained within a specified error band, usually symmetrical about the final value.

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