M81 instrument specifications

Specifications are subject to change

For individual module specifications, please see each module page:

VM-10 voltage measure module

BCS-10 balanced current source module

CM-10 current measure module

VS-10 voltage source module

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 in

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%

Phase noise: 100 ms time constant, 12 dB/oct:
    Internal reference: <0.0001° RMS at 10 kHz
    External reference: <0.002° RMS at 10 kHz

Dynamic reserve: >120 dB (typical, see manual)

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

Monitor out: BNC—M1 monitor, M2 monitor, M3 monitor, manual output

Digital inputs: 6-pin 3.5 mm detachable terminal block:
    2 TTL compatible inputs:
    Vhigh nominal: 3.3 V; Vlow nominal: 0 V

Digital outputs: 6-pin 3.5 mm detachable terminal block:
    2 TTL compatible outputs:
    3.3 Vhigh nominal at 1 mA

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

Isolation: Measure common isolated from chassis ground

Front panel display: 5 in capacitive touch, color TFT-LCD WVGA (800 × 480) with LED back-light

System speeds

 USBGPIBEthernet
Data streaming maximum reading rate (records/s)500050005000
Data streaming maximum data throughput1 (kB/s)204080
Typical SCPI query response time2 (ms)40650
1Host PC dependent; speeds measured using PyVISA and Python 3 on Windows® 10 Intel® Core™ i7-8700 2.4-GHz CPU PC with 16 GB RAM
299% of queries are serviced faster than this interval

Interface

IEEE-488.2 (GPIB)

Function: IEEE-488 command and control

Capabilities: SH1, AH1, T5, L4, SR1, RL1, PP0, DC1, DT0, C0, E1

Data throughput: Limited by 3 megabit internal bus rate

Connector: IEEE-488 24-pin receptacle with M3.5 jack screws

Software support: LabVIEW™, Python, MeasureLINK, IVI‌.‌NET

USB host

Type: USB 3.0 MSC device

Function: Firmware updates, flash drive support

Connector: USB Type-C™

USB device

Type: USB 2.0

Function: Emulates a standard RS-232 serial port

Protocol: Standard commands for programmable instruments (SCPI)

Baud rate: 921600 Bd

Connector: USB Type-B

Software support: LabVIEW, Python, MeasureLINK, IVI.NET

Ethernet

Function: TCP/IP command and control, mobile app

App layer protocol: Standard commands for programmable instruments (SCPI)

Connector: RJ-45

Speed: 1 Gb/s

Software support: LabVIEW, Python, MeasureLINK, IVI.NET

General

Ambient temperature: Rated accuracy is ±5 °C of calibration temperature; 5 °C to 40 °C at reduced accuracy

Power requirement: 100 V, 120 V, 220 V, 240 V, ±10%, 50 or 60 Hz, 140 VA

Size: 216 mm W × 87 mm H × 369 mm D (8.5 in × 3.4 in × 14.5 in), half rack

Weight: 5.7 kg (12.6 lb)

Approval: CE mark

Available BNC adapter specifications

When used with S1, S2, or S3 source connections

Range: 10 V, fixed

Noise: <1 µV/√Hz at 1 kHz

Output impedance: 25 Ω

Raw converter resolution: 18 bits (76 µV/LSB)

Temperature coefficient: 50 ppm/°C

Accuracy: 0.1% + 500 μV (1 year, ±5 °C from calibration temperature, after self-calibration of instrument, no calibration applicable to the cable itself)

When used with M1, M2, or M3 measure connections

Range: 10 V, fixed

Noise: <1 µV/√Hz at 1 kHz

Input impedance: 10 MΩ

Raw converter resolution: 20 bits (19 µV/LSB)

Temperature coefficient: 50 ppm/°C

Accuracy: 0.1% + 500 μV (1 year, ±5 °C from calibration temperature, after self-calibration of instrument, no calibration applicable to the cable itself)

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