#502 UnoBldg., 219 Dogok-ro, Gangnam-gu, Seoul 06231, Korea
645 | 50 MHzArbitrary Waveform Function Generator

BNC Model 645 50MHz 펑션 / 임의 파형 발생기는 이전 모델보다 많은 고급 기능과 사용자 모드를 제공하며 경제적 인 제약 조건을 충족하도록 설계된 가격으로 제공됩니다. 새로운 DDS + 기술은 반도체 산업의 발전을 수용하고 표준 및 복잡한 기능 모두를위한 최신 구성 요소를 활용합니다. 결과 디자인은 모든 벤치를위한 상자이며 과거의 ARB 및 함수 발생기보다 훨씬 더 성능이 뛰어납니다. 웹 브라우저가 LAN을 통해 계측기를 제어 할 수 있도록 IP 지원도 통합했습니다.

Model 645는 20MHz 및 30MHz 모델에 비해 상당한 발전을 이루었습니다. 속도, 샘플 속도 및 메모리가 확장됩니다. 커스텀 파형 저장이 증가하고 촉각 전면 패널 컨트롤을 조작하기가 쉽습니다.




  • 50MHz sine, 10MHz Arbitrary Waveform
  • 14-bit, 125MSa/s, 256 K-point ARB
  • Pattern Generator (16 bits wide, 256K depth)
  • Pulse, Ramp, Triangle, Noise
  • AM, FM, PM (PSK), FSK & PWM Modulation
  • Linear & Logarithmic Sweeps
  • USB, LAN or GPIB Optional programming
  • wavePRO Waveform Creation, Editing and Importing


  • Nanotechnology, Automotive to Power Industry testing
  • Radar, Medical / Biomedical Simulations
  • Phase Sync’d signals for MEMS, gyro control
  • Count rate Simulation (linear or non-linear)
  • Throughput / Response Measurements

Key Specifications

  • 50MHz ARB with 14 bit, 125M samples/sec, 256K memory
  • Display – Illustrates Active Waveform
  • Sync – Multiple units together, or to an external clock
  • Functions – Square Wave w/ 10nS Risetimes, ramps, triangles, pulses with adjustable edges to 10nS, noise to 20MHz
  • Standard Waveforms —Sine, Square, Ramp, Triangle, Pulse, Noise, DC
  • Built-In ARB Waveforms — Exponential Rise and Fall, Negative Ramp, Sin(x)/x, Cardiac
  • Total Harmonic Distortion —DC to 20kHz, 0.04%
  • Square Wave —1uHz to 25MHz
  • Modulation Modes – AM, Amplitude Modulation; FM, Frequency Modulation; PM, Phase Modulation; PWM, Pulse Width Modulation; FSK, Frequency Shift Keying
  • Pulse Mode Frequency—10MHz
  • Pulse Mode Width —10nS res
  • Arbitrary Mode Frequency — 1uHz to 10MHz
  • Arbitrary Model Length — 2 to 256K

Pulse Generation

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. If you have multiple units in your experiment, you may elect to save the setup and upload the pulse properties to multiple Model 645s. For adjustability and routing pulsing tests, see the flexible nature of the Model 645.

Custom Waveform Generation

Many research activities requiring a variety of custom pulses, the Model 645 allows users to generate complex custom waveforms on a computer and download the waveform properties into the ARB. The custom nature of the device lends itself well to R&D activities with a range of vaiable tests that need to be performed. The Model 645 offers 14-bit resolution and a 125 MSa/s sampling rate, giving users enough control of their waveforms for most applications. The Model 645 will storage of up to 5 waveforms concurrently [4 waveforms (4 x 256K points)] in nonvolatile memory and 1 waveform in volatile memory.

Graph mode

In graph mode, the user can easily visual verify the signal settings. Also, the user can always see the selected function on the upper left corner of display.

BNC Waveform Editing Software: WaveCrafter

BNC WaveCrafter allows users to create, edit, and download complex waveforms into their Model 645 quickly and efficiently. Storage of complex waveforms can be done on the PC or emailed among colleagues. In addition, users can retrieve waveforms from a number of Digital and Mixed-Signal Oscilloscope (such as the Agilent MSO 8104) using WaveCrafter in capture mode.

Data Transmission via Pattern Out

The Model 645 offers users the ability to create and store 16-bit data for later retrieval. The data can be transmitted via a “Pattern Out” from the Model 645 rear panel as a source of control signals for your experiment.

User-Friendly Operation

The front-panel operation of the Model 645 is simple and user-friendly. Users can enter setup parameters and access all functions with no more than two button presses. The knob and convenient numeric keypad allow fast setting of frequency, amplitude, offset and other parameters. You may enter voltage values in Vpp, Vrms, dBm or high & low levels. Timing parameters can be entered in Hertz (Hz) or seconds.

Easy-to-use Functions

Users can easily use the following functions.

  • Internal modulations of AM, FM, PM (PSK), FSK & PWM for waveform adjustment.
  • Built-in linear and logarithmic sweeps from 1ms to 500 s.
  • The burst mode has a selectable number of cycles per period of time.
  • Using remote control via USB, LAN or Opt. GPIB interface.
  • The programmability by SCPI commands under the remote control connection.
  • Precise phase adjustments and calibrations can be done from the front panel or via a PC.

Optical Encoder

Rather than a traditional mechanical rotary encoder which begins to fail at 25,000 turns, our optically coupled rotary encoder has a life cycle of 1,000,000 turns. Long term reliability is in every detail.



DisplayGraph mode for visual verification of signal settings
CapabilityStandard Wave formsSine, Square, Ramp, Triangle, Pulse, Noise, DC
Built-in arbitrary waveformsExponential Rise and Fall, Negative ramp, Sin (x)/x, Cardiac

Waveform Characteristics

SineFrequency1 µHz 50 MHz
(Relative to 1 KHz)
0.1 dB (< 100 KHz)
0.15dB (<5MHz)
0.3dB (<20 MHz)
0.5 dB (<50 MHz)
Harmonic Distortion
(Unit dBc)
DC to 20 KHz
-70 (<1Vpp) -70(≥ 1Vpp)
20 KHz to 100 KHz
-65(<1Vpp) -(≥ 1Vpp)
100KHz to 1 MHz
-50 (<1Vpp) -45 (≥1Vpp)
1 MHz to 20 MHz
-40 (< 1Vpp) -35 (≥1Vpp)
20 MHz to 50 MHz
-35(<1Vpp) -30 (≥1Vpp)
Total Harmonic DistortionDC to 20 KHz, Output ≥ 0.5Vpp
THD+N ≤0.06%
DC to 1 MHz
-70 dBc
1 MHz to 50 MHz
-70 dBc + 6dB/ octave
Phase Noise
(10K Offset)
-115/dBC/ HZ, typical when f ≥ 1MHz, V ≥ 0.1Vpp
SquareFrequency1µHz to 25 MHz
Rise/ Fall time< 10 ns
Overshoot< 2%
Duty Cicle
20% to 80% (to 10MHz)
40% to 60% (to 25 MHz)
Asymmetry1% of period + 5 ns (@ 50% duty)
Jitter200 ps
when f ≥ 1MHz, V ≥ 0.1Vpp
Ramp, TriangleFrequency1 µHz to 200 KHz
Linearity< 0.1% of peak output
Symmetry0.0% ~ 100.0%
PulseFrequency500 µHz to 10 MHz
Pulse Witdh20 ns minimum
10 ns res. (period ≤ 10s)
Variable Edge Time<10 ns to 100 ns
Overshoot< 2%
Jitter(RMS)200 ps
when f ≥ 50KHz, V ≥ 0.1Vpp
NoiseBandwidth20 MHz Typical
ArbitraryFrequency1 µHz to 10MHz
Length2 to 256 K
Resolution14 biys (Including sign)
Sample Rate125 MSa/ s
Min Rise/ Fall30 ns typical
Linearity< 0.1% of peak output
Settling Time<250 ns to 0.5% of final value
Jitter (RMS)6ns + 30ppm
Non-Volatile Memory4 waveforms * 256K points

Common Characteristic

AmplitudeRange10mVpp to 10Vpp in 50Ω
20mVpp to 20 20Vpp in Hi-Z
(at 1KHz)
±1% of setting ±1mVpp
UnitsVpp, Vrms, dBm
Resolution4 digits
DC OffsetRange
(Peak AC + DC)
±5V in 50Ω typical
±10V in Hi-Z
Accuracy±2% of offset setting
±0.5% of amplitude setting
Resolution4 digits
Main OutputImpedance50Ω typical
Isolation42 Vpk maximum to earth
ProtectionShort-circuited protected;
overload automatically disables main output
Internal Frequency reference Accuracy±10ppm in 90 days
±20ppm in 1 year
External Frequency referenceStandard/ OptionStandard
External Frequency InputLock Range10 MHz ± 500 Hz
Level100 mVpp ~ 5Vpp
Impedance1KΩ typical, AC coupled
Lock Time< 2 sec
ExternalLock Range10 MHz
Frequency OutputLevel632mVpp (0dBm), typical
Impedance50Ω typical, AC coupled
Phase OffsetRange-360° to 360°
Accuracy8 ns


Modulation TypeAM, FM, PM, FSK, PWM, Sweep and Burst
AMCarrierSine, Square, Ramp, Arb
SourceInternal/ external
Internal ModuleSine, Square, Ramp, Triangle, Noise. Arb
Frequency (Internal)2mHz to 20KHz
Depth0.0% ~ 120.0%
FMCarrierSine, Square, Ramp, Arb
SourceInternal/ external
Internal ModulationSine, Square, Ramp, Triangle Noise, Arb
Frequency (Internal)2mHz to 20 KHz
DeviationDC ~ 25MHz
PMCarrierSine, Square, Ramp, Arb
SourceInternal/ external
Internal ModulationSine, Square, Ramp, Triangle, Noise, Arb
Frequency (Internal)2mHz to 20 KHz
Deviation0.0° to 360°
SourceInternal/ external
Internal ModuleSine, Square, Ramp. Triangle, Noise, Arb
Frequency (Internal)2mHz to 20KHz
Deviation0% ~ 100% of pulse witdh
FSKCarrierSine, Square, Ramp, Arb
SouceInternal/ external
Internal Modulation50% duty cycle Square
Frequency (Internal)2mHz to 100KHz
External Modulation InputVoltage Range±5V full scale
Input Resistance8.7KΩ typical
BandwitdhDC to 20KHz
SWEEPWaveformsSine, Square, Ramp, Arb
TypeLinear or logarithmic
Dirrectionup or down
Sweep Time1 ms ~ 500 sec
TriggerInternal, External or Manual
MarkerFalling edge of sync signal (programmable frequency)
BURSTWaveformsSine, Square, Ramp, Triangle, Noise, Arb
TypeCouted (1 to 50000 cycles), Infinite, Gated
Start/ Stop Phase-360° to 360°
Internal Period1uS ~ 500 Sec
Gated SourceExternal trigger
Trigger SourceInternal, External or Manual
Trigger InputLevelTTL Compatible
SlopeRising or Falling (Selectable)
Pulse witdh> 100ns
Impedance> 10KΩ, DC coupled
Latency< 500 ns
Trigger OutputLevelTTL compatible into ≥ 1 kΩ
Pulse Witdh> 400 ns
Output Impedance50Ω typical
Maximum rate1MHz
Fan-out≤ 4 Picotest G5100As

Pattern Mode Characteristic

ClockMaximum Rate50MHz
OutputLevelTTL compatible into ≥ 2 KΩ
Output Impedance110 Ω typical
PatternLength2 to 256 K


Power SupplyCAT II – 240V AC ±10%
Power Cord Freq.50Hz to 60Hz
Power Consumption50VA max
Operating Enviroment0°C to 55°C
Storage Temperature-30°C to 70°C
Interface(Standard) USB, LAN, (Optional) GPIB
LanguageSCPI – 1993, IEEE – 488.2
Dimensions107 (H) x 224 (W) x 380 (D)mm
Safety Designed toIEC61010-1, EN61010-1, UL61010-1
EMCTested toEN61326, IEC61000-3, IEC61000-4
Warm-up Time1 hour
Warranty1 Year


Technical resources 

Frequently Asked Questions (FAQ) 

Model 645 | What is the External Modulation In connector on the model 645 used for? 

Model 645 | What is the External Modulation In connector on the model 645 used for? 

This rear panel connector can be used to insert modulation signals onto a carrier. In conjunction with modes such as AM, FM, SSB, Ext Mod can even provide communication signals at the SIG OUT connector.