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High Speed transimpedance amplifier and digital data sampler

The PLL-1701 optometer is designed for two different types of fast optical measurements with two different amplifier modes (linear or logarithmic).

The device incorporates a small integrating sphere and detector for the measurement of optical power from fibers (FC connector) in W over the wavelength range 400 nm to 1550 nm. The measurement results can be output either directly as an analogue voltage (BNC) or as digital data via USB or RS422 interface. The pure analogue measurement conversion (transimpedance) to the BNC is with a speed of 200000 Samples/s suitable for very fast measurement purposes. The digital measurement is only limited by the transmission speed of USB and RS422 (100kHz).Instead of the integrating sphere measurement, an external detector can be used with the provided BNC current-input.

The device itself can be configured by the two remote interfaces.


Flicker measurements

The fast sampling rate enables flicker evaluation of lighting products. The standard flicker metrics Pst, SVM, Mp, Flicker frequency, Flicker index and Flicker percent are all implemented in the available software.


16 µs or 500 µs rise time linear amplifier 

The PLL-1701 linear signal amplifier offers fixed rise times of either16 µs or 500 µs for all gain ranges which can be set by remote commands. The total gain range of the current to voltage amplifier is divided in nine ranges in order to achieve an optimal signal to noise ratio.


logarithmic amplifier 

The PLL-1701 also offers a logarithmic amplifier which covers the whole dynamic range with one amplifier gain range. Hence no switching of gains is needed which would otherwise take some time and thereby limit some high speed applications.


AA, ADC and DAC mode

In addition to the traditional measurement functions of an optometer (AA - analogue to analogue (transimpedance) and ADC – analog to digital converter) the PLL-1701 incorporates a digital to analog converter able to transfer 16-bit digital data to the analogue electrical output (BNC); signal generator functionality (-5V to +5V).


Software

Windows based software is supplied with the PLL-1701 which provides all common functions to do remote control measurements and analysis via USB and RS422. Optionally an S-SDK-PLL1701 is available to implement the meter by the user’s own software.

 

schematic drawing: 1 = optical fiber (user), 2 = FC connector, 3 = integrating sphere, 4 = Current in (external detector), 5 = Voltage Out, 6 = Photodiode, 7 = electronic board, 8 = Power supply, 9 = USB, 10 = I/O interface
PLL-1701
Front View
Rear View
General
Short description

High-speed transimpedance amplifier, digital data sampler and function generator for versatile applications with implemented integrating sphere for radiant power (W) measurement of optical fibers. The PLL-1701 stand out with two integrated amplifiers, a linear amplifier with nine gain ranges and logarithmic amplifier with one high dynamic range without need for range switching.

Main features

Optical FC input for fast measurement of optical fibers, BNC electrical current input for external detector heads, linear and logarithmic current amplifiers

Measurement range

linear and logarithmic amplifier, radiant power measurement (W) with the integrating sphere calibrated from 400 nm to 1550 nm

typical applications

Fast measurement of optical fibers, fast measurement with detector heads, AA, ADC and DAC measurements, flicker measurements

Calibration

Factory calibration. Traceable to international calibration standards

Product
Input Interfaces

BNC-Connector (electrical)

FC-Connector (optical)

Output Interfaces

BNC-Connector, Output Voltage: ± 5V

USB

ADC

16 bit

 

DAC

16 bit

Measurement range
Linear amplifier:

range

max.

rise time

(10 - 90)%

rise time reduced
(10 – 90)%

± 1.17 mA

16 µs

500 µs

± 545 µA

16 µs

500 µs

± 254 µA

16 µs

500 µs

±117 µA

16 µs

500 µs

± 54 µA

16 µs

500 µs

± 25.4 µA

16 µs

500 µs

± 11.7 µA

16 µs

500 µs

± 5.45 µA

16 µs

500 µs

± 2.54 µA

16 µs

500 µs

 

Log amplifier:

max. current: +1 mA (analog output voltage: +4.8V)

min. current: +100 pA (analog output voltage: -1.8V)

spectral responsivity

PLL 1701 spectral responsivity

Calibration uncertainty
(400 - 800) nm: ± 5 %
(810 - 900) nm: ± 6 %
(910 - 1070) nm ± 6.5 %
(1080 - 1100) nm ± 7 %
(1110 - 1550) nm: ± 7.5 %

 

Spectral radiant intensity responsivity (400 - 1550) nm

Function generator

The PLL-1701 is able to provide electrical Signals on the BNC Output (function generator):

-5 V to +5V, max. 10000 Values, clock speed 3µs – 900µs

Miscellaneous
temperature range

Storage: (-10 to 50) °C

Operation: (10 to 30) °C 

 

* temperature difference relative to the calibration temperature can increase the measurement uncertainty

Power Supply

(9-24) VDC

200 mA bei 12 V

Interface

USB V2.0 (Full Speed, HID Device); sampling rate which can be transmitted = 100 kHz

LVDS (LVDS protocoll, acts as a single direct RS442 connector); sampling rate which can be transmitted = 100 kHz

Weight

550 g

Dimensions

173.3 mm x 36.2 mm x 124.4 mm

Trigger

Low active, Trigger Level ca. 1V

Type Description File-Type Download
Datasheet PLL-1701 PDF
Produktname Product Image Description Show product
S-SDK-PLL1701 Software Development Kit for the PLL-1701.
Article-Nr Modell Description Request / Compare
Product
15307746 PLL-1701

PLL-1701 Optometer

Calibration
15309151 K-PLL1701

Calibration of the PLL-1701 in W in the wavelength range from 400 nm to 1550 nm including current calibration of the logarithmic and linear amplifier.

Software
15309838 S-SDK-PLL1701

Software development kit for the PLL-1701

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