Home-Products-Electronic instruments-Digital current integrator-439 digital current integrator

439 digital current integrator

Product model:

Brief description:Measures the average value of DC or pulsed currents Can be used as a digital current integrator, digital charge integrator or digital electrometer Wide dynamic range Inputs protected to 1000V (0.01F) or 2000V (0.001F) The ORTEC Model 439 digital current integrator is designed to accurately measure the average value of DC currents or pulsed currents generated by accelerator beams

Manufacturer strength
Manufacturer Strength
Valid warranty
Valid Warranty
Quality assurance
Quality Assurance

Product consultation

Contact

Products

PRODUCT CATEGORY

Detailed introduction

Measures the average value of DC or pulse current
Can be used as a digital current integrator, digital charge integrator or digital electrometer
wide dynamic range
Inputs protected to ±1000 V (0.01 μF) or ±2000 V (0.001 μF)

ORTEC 439The digital current integrator is designed to accurately measure DC current or the average value of pulsed current generated by an accelerator beam. It digitizes the input current by generating an output pulse for a specific input charge value. Front panel switch selects three different charge levels (10^-10、10^-8or10^-6Coulomb) to generate output pulses. This instrument has from0Arrive10 kHzdigitizing frequency that provides a wide dynamic range at every setup, enabling high-resolution readings without the need for meter interpolation.

information +
- 439 Brochure
- 439 Brochure (A4)
- 439 Manual
More information +

Use the Type 439 in conjunction with a preset counter to form a digital charge integrator. Combine this with a counter and timer to get a digital electrometer.

Read the input current via the front panel meter. Rear-panel binding posts provide full-scale analog outputs of 1 mA, 100 mV, and 10 mV. Full-scale readings for the front panel meter and analog output can be selected from 1 X 10-9 to 1 X 10-2 A, in 15 steps. The inputs are protected from damage by applying a large input charge.

Front and rear panel BNC connectors can apply a gate signal to inhibit the digital output. This gate can be used to remotely control the Model 439, or to suppress the digitized output via a multi-channel analyzer dead time output signal.

The Model 439 can be combined with an ORTEC preset counter to form a digital charge integrator, or with a counter and timer to form a digital electrometer.

Specifications +

Performance

Leakage impedance from input to ground	>1 X 10¹⁰Ω。
Input leakage current	<1 X 10^–¹²A。
temperature instability	≤±0.05%/°C，0to50°C。
Digital output inaccuracy	Readings from100 nAArrive10 mA dc，≤±0.2%; for50 nA, usually ±0.3％（10^-10coulomb/The count rate in the pulse range is limited to1 kHz）。
Digital reproducibility	0.01%。
Simulation accuracy	front panel instruments2%; Rear panel binding posts1.5％。

Controls and lights

multiple	Front panel switch that determines the multiple applied to the current full-scale reading to produce full-scale deflection on the ammeter.
Current full scale and Coulomb/pulse	Front panel switch that controls the amount of charge that must be injected into the input to obtain a digital output pulse (selectable from low, medium, and high).
test-Operation	front panel3bit switch control439Type functions: • test Provides internal test current to all coulomb/Generated within the pulse range ~1000 Hzoutput. • standby will439The input terminal of the model is grounded to prevent transient signals from entering the input amplifier. • Operation Commonly used439type position; connect the input amplifier to the front and rear panelsSHVInput connector.
polarity	The front panel switch selects the polarity of the input current to be measured, either positive or negative.
Bal/Trig	for connectionBal/TrigInstrumentation and testing-Front panel switches for operating switches are balanced and adjustable439type input amplifier.
offset/current	The rear panel potentiometer is available at ~±10 pAAdjust the input offset current within the range.

Input

Signal input terminal

Via front and rear panelsSHVconnector.
• impedance nearly ground, offset<±5 mV。
• Current polarity Positive or negative.
• Current range 1 X 10^-9to1 X 10^-2 A。

door

signal is typically present when there is no input or when the DC nominal value is+6 Venabled; front and rear panelsBNCconnector.
• Enable output +3 Vor higher.
• suppress output +1.5 Vor lower (for example, can be shorted to ground via a relay).
• input +25 V，-10 V。
• Duty Cycle Limitation None, DC coupled.
• Input impedance >1000 Ω; the driving source must be able to absorb the1 mAcurrent.

Output

Digitization	signal+5 V，500 nswide;0to10kHz;Front and rear panelsBNCconnector.
Simulation	• front panel instruments0-1and0-3Measuring ranges are available in all multiple ranges. Yes15a full range. • Rear panel binding posts 0to1 mAfull scale;0to100 mVfull scale;0Arrive10 mVfull scale. Yes15a full range.

electrical and mechanical

Required power supply	439model from standardNIMPower box/power supply (e.g.ORTEC 4001A/4002Atype) to obtain power. The required power supply is+24 V，45 mA; -24 V，45 mA; +12 V，95 mA; -12 V，110 mA。
weight	Net weight 1.7Kilogram (3.75pounds). Shipping weight 3.06Kilogram (6.75pounds).
Size	NIMStandard triple width module,10.28 x 22.13cm (4.05 x 8.714inches) front panel, conforming toDOE/ER-0457Trequirements.

Ordering information +

Model

Description

439

Digital current integrator

Product consultation

Previous article:EL910 filter holder
Next article:925-SCINT ACE Mate preamps, amplifiers, bias supplies and SCA

439 digital current integrator

439 digital current integrator

information +

More information +

Specifications +

Ordering information +

Message box