THORLABS PDAPC4 Manual de usuario

PDAPC4

InGaAs Switchable Gain

Photodetector,

OEM Package

User Guide

InGaAs Switchable Gain Detector, OEM 
 
Table of Contents 
Chapter 1 Warning Symbol Definitions ...........................................1 
Chapter 2 Description........................................................................2 
Chapter 3 Setup..................................................................................3 
Chapter 4 Operation...........................................................................8 
4.1. Theory of Operation......................................................8 
4.2. Responsivity .................................................................8 
4.3. Dark Current.................................................................8 
4.4. Bandwidth and Response ..............................................9 
4.5. Terminating Resistance.................................................9 
4.6. Gain Adjustment...........................................................9 
Chapter 5 Troubleshooting.............................................................10 
Chapter 6 Specifications.................................................................11 
6.1. Response Curve...........................................................12 
6.2. Mechanical Drawing ...................................................13 
Chapter 7 Regulatory.......................................................................14 
Chapter 8 Thorlabs Worldwide Contacts.......................................15 

InGaAs Switchable Gain Detector, OEM Chapter 1: Warning Symbol Definitions

Rev A, May 7, 2021 Page 1

Chapter 1 Warning Symbol Definitions

Below is a list of warning symbols you may encounter in this manual or on your

device.

Symbol

Description

Direct Current

Alternating Current

Both Direct and Alternating Current

Earth Ground Terminal

Protective Conductor Terminal

Frame or chassis Terminal

Equipotentiality

On (Supply)

Off (Supply)

In Position of a Bi-Stable Push Control

Out Position of a Bi-Stable Push Control

Caution, Risk of Electric Shock

Caution, Hot Surface

Caution, Risk of Danger

Warning, Laser Radiation

Caution: ESD Sensitive Components

InGaAs Switchable Gain Detector, OEM Chapter 2: Description

Page 2 TTN239793-D02

Chapter 2 Description

The PDAPC4 is an amplified, switchable-gain, Indium Gallium Arsenide (InGaAs)

photodetector in an OEM package with an operating wavelength range of 800 to

1700 nm. A DIP switch allows the user to vary the gain in 10 dB steps. A buffered

output drives 50 Ωload impedances up to 5 V. The output signal is readable from

the MMCX connector. We provide MMCX to BNC cables (Item # CA3339) or

MMCX to SMA cables (Item # CA3439). Users can also access the digital pins of

the gain switch or the output through an on-board header.

ESD Caution

This product is ESD sensitive. Take all appropriate precautions to

discharge personnel and equipment before making any electrical

connections to the unit.

InGaAs Switchable Gain Detector, OEM Chapter 3: Setup

Rev A, May 7, 2021 Page 3

Chapter 3 Setup

1. The pin out table for the on-board header (J2), Figure 1, is shown in the

two tables below:

Figure 1 J2 Header

J2 PIN OUT

Designation

GND

OUTPUT

-V

N.C.

Note:

Pins 1 & 5: ±V refers to the power supply positive/negative voltages.

Pins 7, 8, & 9: A0-A2 refers to the three digital pins for the gain adjustment.

Gain Switch Table

Gain

0 dB

10 dB

20 dB

30 dB

40 dB

50 dB

60 dB

70 dB

Pin 10

Pin 1

InGaAs Switchable Gain Detector, OEM Chapter 3: Setup

Page 4 TTN239793-D02

2. Connect a power supply to pins 1, 3, and 5 of the J2 header. The required

power supply voltages are:

J2 Pin

Voltage

+12 VDC

GND

-12 VDC

Thorlabs offers the LD1255-SUPPLY as one compatible power supply

option. Connection to the board is shown below:

Figure 2 Power Supply Connection

InGaAs Switchable Gain Detector, OEM Chapter 3: Setup

Rev A, May 7, 2021 Page 5

3. Digital gain can be adjusted through the J2 header shown in Figure 1 or

using the on-board DIP switch shown below. Each switch is ‘Off’/0 when

in the up position and ‘On’/1 when in the down position.

Figure 3 Location of the On-Board DIP Switches

The following table describes what each switch does:

Switch Number

Function

Enable

To enable the DIP switch settings, set switch # 1 to ‘On’/1. See the table

on page 3 for the corresponding gain settings.

Note: The default DIP switch settings are all in the ‘Off’/0 position and

customer could only use J2 Header for gain setting purposes. When the

DIP switch is enabled, it would override the seetings of the J2 Header.

On-Board DIP

Switches

InGaAs Switchable Gain Detector, OEM Chapter 3: Setup

Page 6 TTN239793-D02

4. The side adjusted potentiometer is used to adjust the voltage output’s

offset at high gain settings (e.g. 70 dB). This part is factory pre-adjusted

so normally the user does not need to adjust it. However, if the output

offset value has fallen out of spec, for example drift over time or

temperature, then it is possible to adjust it back by turning this

potentiometer. Turning the screw head clockwise decreases the offset

voltage and adjusting the screw head conterclockwise increases it.

Figure 4 Side adjusted potentiometer

5. Attach a 50 Ωcoax cable to the output of the PDAPC4 detector. Thorlabs

offers two suitable cable options, the CA3339 MMCX to BNC cable or the

CA3439 MMCX to SMA cable.

When running cable lengths longer than 12", Thorlabs recommends

terminating the opposite end of the coax with a 50 Ωresistor for optimal

performance. Thorlabs Item # T4119 is suitable for this purpose.

Potentiometer

Adjustment

Screw Head

MMCX

Connector

Tabla de contenidos

Otros manuales de Sensor de seguridad de THORLABS

THORLABS

THORLABS PDA30B Manual de usuario

THORLABS

THORLABS PDA10DT Manual de usuario

THORLABS

THORLABS SPDMA Manual de usuario

THORLABS

THORLABS TQD001 Manual de usuario

THORLABS

THORLABS PSDM2 Manual de usuario

THORLABS

THORLABS PDB440A Manual de usuario

THORLABS

THORLABS PDAVJ series Manual de usuario

THORLABS

THORLABS SPDMH2 Manual de usuario

THORLABS

THORLABS PDA25K Manual de usuario

THORLABS

THORLABS PDA015AM Manual de usuario

THORLABS

THORLABS PDAPC1 Manual de usuario

THORLABS

THORLABS PDAPC2 Manual de usuario

THORLABS

THORLABS PDA07P2 Manual de usuario

THORLABS

THORLABS PDA8A2 Manual de usuario

THORLABS

THORLABS APD410 Series Manual de usuario

THORLABS

THORLABS DET36A2 Manual de usuario

THORLABS

THORLABS InGaAs PDA10CS2 Manual de usuario

THORLABS

THORLABS PDA20C2 Manual de usuario

THORLABS

THORLABS DET25K2 Manual de usuario

THORLABS

THORLABS PDA10D2 Manual de usuario

THORLABS

THORLABS PDB47 C Series Manual de usuario

THORLABS

THORLABS APD440A Manual de usuario

THORLABS

THORLABS PDA500 Manual

THORLABS

THORLABS APD430 Series Manual de usuario

Manuales populares de Sensor de seguridad de otras marcas

Waeco

Waeco UV-DETECT Manual de usuario

Intermatic

Intermatic IOS-DSIMF Manual de usuario

urmet domus

urmet domus 1083 Manual de usuario

Siemens

Siemens AZL66 Series Manual de usuario

BTI

BTI Profiline Multi Finder Manual de usuario

Challenger

Challenger SL01 Manual de usuario

DMP Electronics

DMP Electronics 1122INT Manual de usuario

Rielta

Rielta Ladoga MK-RK Manual de usuario

Mirion Technologies

Mirion Technologies ACCURAD PRD Manual de usuario

Bosch

Bosch DS835 Manual de usuario

DBI SALA

DBI SALA EZ Stop Manual del operador

Lamptime

Lamptime ST05C Manual de usuario

Ubiquiti

Ubiquiti MFI-MSC Manual de usuario

Subsite

Subsite 910R Instrucciones de instalación

Satel

Satel OPAL Pro Manual de usuario

Aleph

Aleph XC-1XTEU Manual de usuario

Pima

Pima LARIS QUAD Manual de usuario

Solinst

Solinst 301 Manual de usuario