키사이트 공식대리점

SR860

SR860

  • 주파수 범위 : 0.001 Hz ~ 500 kHz
  • 전압 입력 노이즈 : 2.5 nV/√Hz (at 1 kHz)
  • 다이나믹 리저브 : 120 dB (typ)
  • 시간 상수 범위 : 1 µs ~ 30 ks
  • 전압 감도 범위 : 1 nV ~ 1 V

주파수 범위

0.001 Hz ~ 500 kHz

전압 입력 노이즈

2.5 nV/√Hz (at 1 kHz)

다이나믹 리저브

120 dB (typ)

시간 상수 범위

1 µs ~ 30 ks

전압 감도 범위

1 nV ~ 1 V

주요특징

SR860

  • 500 kHz lock-in amplifier
  • 1 mHz ~ 500 kHz의 주파수 범위에서 작동하는 락인 앰프입니다.
  • 1 kHz 기준 2.5 nV/√Hz의 업계 최저 수준 전압 노이즈를 제공합니다.
  • 1 fA ~ 1 µA 범위의 고감도 전류 입력 앰프가 기본 내장되어 있습니다.
  • 복잡한 계산 없이 120 dB의 높은 다이나믹 리저브를 간편하게 설정할 수 있습니다.
  • 전통적인 RC 필터와 측정 시간을 단축하는 고급 디지털 필터(가우시안/위상-선형)를 모두 지원합니다.
  • <2 µs의 딜레이를 가진 BlazeX 저지연 아날로그 출력을 제공합니다.
  • X, Y, R, $\Theta$ 등 4개의 측정 채널을 컬러 화면에 동시 표시 및 기록합니다.
  • 이더넷을 통해 최대 1.25 MHz 속도로 실시간 데이터 스트리밍이 가능합니다.
  • GPIB, RS-232, USB, 이더넷(VXI-11) 및 HDMI 포트 등 완벽한 연결성을 갖추었습니다.
제품사양

SR860

Signal Channel

Voltage inputs Single-ended (A) or differential (A-B)
Sensitivity/Output Scale 1 nV to 1 V (voltage input),
1 fA to 1 µA (current input)
Voltage Input range 10 mV to 1 V (peak)
Current input range 1 µA or 10 nA (peak)
Max input before overload 1 V (peak) or 1 µA (peak)
Input impedance
     Voltage input 10 MΩ + 25 pF, AC (>1 Hz) or DC coupled
     Current input 1 kΩ or 100 Ω to virtual ground
Gain accuracy ±1 % (<200 kHz), ±2 % (to 500 kHz). Signal amplitude must be less than 30 % of input range.
Noise 2.5 nV/√Hz at 1 kHz (10 mV input range, typ.)
Harmonic distortion -80 dB (<100 kHz), -60 dB (>100 kHz)
CMRR 90 dB at 1 kHz
(DC coupled, 10 mV to 100 mV input range)
Dynamic reserve 120 dB (typ)

Reference Channel

Frequency range 0.001 Hz to 500 kHz
Timebase 10 MHz In/Out (phase locks the internal frequency to other SR860s.)
Input impedance 1 MΩ or 50 Ω
Phase setting resolution (360/232) degrees
Phase noise
   Int. reference <0.0001° rms at 1 kHz (100 ms, 12 dB/oct)
   Ext. reference  (typ) <0.001° rms at 1 kHz (100 ms, 12 dB/oct)
Phase drift (typ) Sine Out to signal In (200 mVrms)
<0.002°/°C below 20 kHz (DC coupled)
<0.02°/°C below 200 kHz
<0.2°/°C below 2 MHz
Harmonic detection Detect at N × fref (N < 99, (N × fref) < 500 kHz)
Dual F reference Detect at fdual = │ fint – fext│. All frequencies must be less than 500 kHz
Chopper reference SR860 drives SR540 Chopper (via Aux Out 4) to lock the chopper to fint

Demodulator

DC stability Digital output values have no offset drift
Time constants 1 µs to 30 ks
Low pass filters Typical RC-type filters or advanced Gaussian/Phase-Linear filters
Filter slope 6, 12, 18 or 24 dB/oct rolloff
Synchronous filter Available below 4 kHz
Harmonic rejection -80 dB
Low latency output Rear-panel BlazeX output with <2 µs delay (plus LPF rise/fall times).

Internal Oscillator

Frequency 1 mHz to 500 kHz
Frequency accuracy 25 ppm + 30 µHz (with internal timebase)
External timebase 10 MHz timebase input/output on rear panel
Frequency resolution 6 digits or 0.1 mHz (whichever is greater)

Sine Output

Outputs Differential or single-ended
Output impedance 50 Ω source
Amplitude 1 nVrms to 2 Vrms (specified amplitude is differential into 50 Ω loads). Output amplitude is halved when used single-ended. Output amplitude is doubled into a high impedance load.
 
Amplitude resolution 3 digits or 1 nV, whichever is greater
DC offset ±5 V, differential or common mode
Offset resolution 3 digits or 0.1 mV, whichever is greater
Output limit ±6 V, sum of DC offset and peak amplitude
Sync Logic level sync on rear panel
(via BlazeX output)

Data

Data channels 4 data channels are displayed and graphed (green, blue, yellow, orange)
Data sources Each data channel can be assigned any of these data sources: X, Y, R, Θ, Aux In 1 to 4, Aux Out 1 to 2, X noise, Y noise, Sine Out Amplitude, Sine Out DC Level, Reference Phase, or Reference Frequency
Data history All data sources are continually stored at all chart display time scales. The complete stored history of any data source can be displayed at any time.
Offset X, Y and R may be offset up to ±999 % of the output scale
Expand X, Y and R may be expanded by ×10 or ×100
Ratio X and Y may be ratioed by Aux In 3. R may be ratioed by Aux In 4
Capture buffer 1 Mpoints internal data storage. Store (X), (X and Y), (R and Θ) or (X, Y, R and Θ) at sample rates up to 1.25 MHz. This is in addition to the data histories for the chart display.
Data streaming Realtime streaming of data, either (X), (X and Y), (R and Θ), or (X, Y, R and Θ) at sample rate to 1.25 MHz over Ethernet interface
Scanning One of the following parameters may be scanned: fint, Sine Out Amplitude, Sine Out DC Level, Aux Out 1 or 2.

FFT

Source Input ADC, demodulator output, or filter output
Record length 1024 bins
Averaging Exponential rms

Inputs and Outputs

CH1 output Proportional to X or R,
±10 V full scale thru 50 Ω
CH2 output Proportional to Y or Θ,
±10 V full scale thru 50 Ω
X and Y rear-panel outputs Proportional to X and Y,
±10 V full scale thru 50 Ω
BlazeX Low latency output of X,
±2.0 V full scale or logic level reference sync output, either thru 50 Ω
Aux outputs 4 BNC D/A outputs,
±10.5 V thru 50 Ω, 1 mV resolution
Aux inputs 4 BNC A/D inputs,
±10.5 V, 1 mV resolution, 1 MΩ input
Trigger input TTL input triggers storage into the internal capture buffer
Monitor output Analog output of the signal amplifier
HDMI Video output to external monitor or TV,
640 × 480, 60 Hz
Timebase I/O 1 Vrms, 10 MHz clock to synchronize internal reference frequency to other units

General

Interfaces IEEE488.2, RS-232, USB device and Ethernet.
USB flash Front-panel slot for USB flash storage of screen shots and data
Preamp power 9-pin D connector to power SRS preamps
Power 60 W, 100/120/220/240 VAC, 50/60 Hz
Dimensions 17″ × 5.25″ × 17″ (WHL)
Weight 22 lbs.
Warranty One year parts and labor on defects in materials and workmanship

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