Model M81-SSM -Synchronous Source and Measure System

For advanced electrical measurement applications, the Lake Shore MeasureReady™ M81-SSM (Synchronous Source and Measure) system offers a simple approach. The M81 reduces the hardware complexity of multiple function-specific instrument setups. It provides the combination of DC and AC sourcing with DC and AC measurement from a single source and includes lock-in sensitivity.

An M81 setup provides inherently synchronized measurements from 1 to 3 source channels and 1 to 3 measurement channels, making it easily adaptable to a wide range of materials and research applications.

• All source and measurement channels capable of DC and AC up to 100 kHz
• Modular concept perfectly suited to a specific electrical measurement application
• Common DAC/ADC sampling clock for consistent source and measurement timing
• Optimized for fundamental, harmonic, and phase AC plus DC bias measurements
• Coming soon: SMU module with AC and DC capabilities

The M81-SSM provides DC and AC stimulus and measurement capabilities for electrical characterizing of materials and devices under cryogenic temperatures up to high-temperature environments. 

Choose a combination of differential current source and voltage measurement modules for low-resistance applications. Or mix and match with additional voltage source and current measurement modules for complex higher-impedance or gate-biasing applications where precise voltage control and sweeping test regimes are required.

Unlike a narrow-bandwidth DC system, these modules operate from very low frequencies to 100 kHz. You can select a measurement bandwidth to avoid 1/f noise or avoid other bands where test environment noise is highest.

The system’s MeasureSync™ technology samples all sourcing and measurement channels at precisely the same time, enabling multiple DUTs to be tested under identical conditions so you can obtain consistent data.

The included MeasureLINK™ software provides configurable measurement scripts and loops to support a variety of applications and for an easy integration with Lake Shore as well as with third-party systems. 

These combined capabilities make the M81‑SSM a superior solution for characterizing several test structures, including nanostructures, single- and multilayer atomic structures, MEMs, quantum structures, organic semiconductors, and superconducting materials.

M81 instrument - source channels

• Source channel functions: DC, sine, triangle (up to 5 kHz), square (up to 5 kHz)
  Source sync functions: Synchronize to another channel or external reference input
  Frequency range: 100 µHz to 100 kHz (or module bandwidth, whichever is lesser)
  Frequency resolution: Greater of 100 µHz, 6 digits
  Frequency accuracy: 0.06%

M81 instrument - measure channels

• Measure channel functions: DC, AC (RMS, peak), and lock-in (X and Y, R and Θ)
  Lock-in reference: Any source channel, or external reference input
  Reference in: BNC—sine >100 mV p – p ≥0.1 Hz; square ≥3.3 V
  Reference out: BNC—3.3 V square
  Total harmonic distortion: <0.1% from DC to 100 kHz, typical
  Sample rate: 375 kSa/s
  Warm-up time: 60 min to achieve specified accuracy

VM-10 voltage measure module

• Input coupling: DC or AC (0.1 Hz)
  Ranges: 10 V, 1 V, 100 mV, 10 mV; seamless, automatic transitions
  Best sensitivity: <1 nV (10 mV range, 10 s, 95% confidence interval)
  Input impedance: 100 MΩ, 120 pF
  Leakage current: <15 pA
  CMRR: 80 dB up to 1 kHz

BCS-10 balanced current source module

• Ranges: 100 mA, 10 mA, 1 mA, 100 μA, 10 μA, 1 μA, 100 nA, 10 nA; automatic selection
  Compliance: 20 V differential, 10 V single-ended (non-settable)
  Maximum power: 1 W, 4-quadrant operation
  CMR modes: Off, internal, external
  Coupling: DC or AC (1 Hz)
  Load impedance: Stability maintained with reactive loads up to 50 µF or 1 mH (with 100 Ω damping)

CM-10 current measure module

• Ranges: 100 mA, 10 mA, 1 mA, 100 μA, 10 μA, 1 μA, 100 nA, 10 nA, 1 nA; automatic transitions
  Input offset voltage: <50 µV
  Leakage current: Greater of 10 ppm of range, 1 pA
  Settable bias voltage: ±10 V
  Bias voltage settable resolution: 320 µV
  Best sensitivity: <10 fA (1 nA range, 10 s, 95% confidence interval)

VS-10 voltage source module

• Ranges: V: 10 V, 1 V, 100 mV, 10 mV; AC range can be independently set lower than the DC range; automatic selection
  Current limit: Settable up to 100 mA peak
  Maximum power: 1 W, 4-quadrant operation
  Output impedance: <150 mΩ
  Load impedance: Stability maintained with reactive loads up to 50 µF or 1 mH (with 100 Ω damping)