Impedance Analyzer ST2851

Highlights

• Frequency: 10Hz – 130MHz, Accuracy: 0.01%
• Test parameters: Cp/s, Lp/s, Rp/s, |Z|, |Y|, R, X, G, B, D, Q, θ, Vac-Iac, DCR, Vdc-Idc
• Basic accuracy: 0.08%
• Color TFT 10.1”
• Graphical representation of parameters plotted over frequency, AC test voltage/current or DC-BIAS voltage
• Speed: 2.5ms
• Interfaces: USB HOST, USB DEVICE, LAN, Handler, RS232C

Specifications

AC Test Voltage Level

• 5mVrms–2Vrms
• Max. resolution: 1mV, 4-digit input
• Accuracy:
  • ≤2Vrms: 10% of set voltage + 2mV
  • >2Vrms: 10% of set voltage + 5mV

AC Test Current Level

• 50µA–20mA
• Max. resolution: 10µA, 3-digit input
• Accuracy:
  • ALC ON: 10% x current + 20 µA
  • ALC OFF: 6% x current + 20 µA

Further Specifications

• Measurement speed (f ≥ 10KHz): Fast+: 2.5ms / Fast: 10ms / Medium: 40ms / Slow: 80ms / Slow+: 400ms
• Equivalent circuits: series and parallel
• Output impedances: 25Ω, 100Ω
• Internal DC BIAS source:
  • Voltage/current range: 0V - ±40V / 0mA - ±100mA
  • Resolution: from 1mV / 40µA
  • Accuracy: ≤2V 1% of set voltage + 5mV
• Compatible with: External DC bias current source ST1778
• Sweep over 1601-point list
• Graphical sweep over 51, 101, 201, 401, 801 or 1601 points
• Sweep parameters: frequency, voltage, current, bias voltage, bias current
• Test signal monitor function
• Built-in comparator for 10 bins and counter
• Control interfaces: RS232, Handler, USBCDC, USBTMC, LAN, GPIB
• 2 USB host ports for mouse/keyboard and USB stick
• HDMI and VGA output
• USB stick can be used to store settings, measurements and screenshots
• Measurement range switching: auto and hold (manual)
• Trigger mode: internal, external, manual and bus
• Correction function: open, short, load
• Power supply: 100 – 120V, 198V-242V / 47 – 63 Hz
• Dimensions (W/H/D): 428/220/325 mm
• Weight: 14.5 kg
• CE-compliant according to EN 50 191

Measurement Ranges

The measurement ranges can be conveniently selected via the touch areas on the right side of the display.

LCR: 100mΩ, 1Ω, 10Ω, 20Ω, 50Ω, 100Ω, 200Ω, 500Ω, 1kΩ, 2kΩ, 5kΩ, 10kΩ, 20kΩ, 50kΩ, 100kΩ

RDC: 1Ω, 10Ω, 20Ω, 50Ω, 100Ω, 200Ω, 500Ω, 1kΩ, 2kΩ, 5kΩ, 10kΩ, 20kΩ, 50kΩ, 100kΩ

Functionality and Application of the Bridge

The ST2851 bridge is the most powerful device in its class. To meet the highest requirements, this bridge was developed to provide maximum measurement quality with a wide range of functions. Measurements can be carried out over a wide frequency range with an accuracy of up to 0.08%. In addition to this high precision, the bridge also offers the ability to perform a measurement cycle in less than 2.5 milliseconds. Fast and accurate measurements are essential for the most demanding industrial applications. Typical areas of use therefore include production lines, such as in the automotive sector, measurement and calibration laboratories, as well as research and development departments.

Scope of Delivery

• ST26005D Kelvin terminal fixture
• ST26047A terminal test adapter
• ST26082A 100 Ohm resistor
• ST26010 gold-plated shorting plate
• Power cord