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Manual SRS Labs SR554

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Summary
  • SRS Labs SR554 - page 1

    Model SR554 Transformer Preamplifier ...

  • SRS Labs SR554 - page 2

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  • SRS Labs SR554 - page 3

    Model SR554 Transformer Preamplifier 1290-D Reamwood Avenue Sunnyvale, California 94089 Phone: (408) 744-9040 • Fax: (408) 744-90 49 email: info@thinkSRS.com • www.thinkSRS.com Copyright © 1999 by SRS, Inc. All Rights Reserve d. Revision 1.2 (07/2004) ...

  • SRS Labs SR554 - page 4

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  • SRS Labs SR554 - page 5

    1 SR554 SPECIFICATIONS Inputs Single ended or differential Input Impedance 0.5 Ω Maximum Inputs Transformer and Buffer: 14.0 mV RMS (±20 mV peak) Transformer only: 350 mV RMS (±0.5 V peak) Common Mode Range: ± 100 VDC Rejection: 140 dB @ 100 Hz Isolation > 40dB DC to 500 MHz Input Noise 120 pV/ √ Hz @ 10 Hz (typical) (Transformer and Buff ...

  • SRS Labs SR554 - page 6

    2 ...

  • SRS Labs SR554 - page 7

    3 OPERATION The SR554 Transformer Preamplifier is designed to be used with all SRS Lock-in amplifiers. It can reduce input noise of a lock-in amplifier dramatically (as low as 100 pV/ √ Hz) and extends the lock-in’s full scale sensitivity (without expand). It also nearly eliminates noise radiated back from the lock-in amplifier to the users exp ...

  • SRS Labs SR554 - page 8

    4 1.6 µ F. The real portion of the input impedance (0.5 Ω ) determines the noise performance. See page 7 for detailed information on input impedance. The input can be floated up to ±100 VDC with respect to the chassis. The maximum AC input before overload is 14 mV RMS (±20 mV peak) when the unit is in the buffered mode. In either mode, the inp ...

  • SRS Labs SR554 - page 9

    5 the differential mode. In differential operation the (A) and (B) center conductors carry the signal and shielded preamp ground, and the shields are tied to the SR554 chassis. The (A) and (B) cables should be twisted together to prevent inductive pick-up. For most experiments it is preferable to use the SR554 in the buffered mode. If the preamplif ...

  • SRS Labs SR554 - page 10

    6 EXTRA LOW NOISE MEASUREM ENTS When making extremely low noise measurements, it is a good practice to connect the grounding plug of the SR554 to a ground point near the experiment. If a good ground is not available near the experiment, connect a wire from the lock- in chassis (using a lug under one of the chassis screws) to the grounding lug of th ...

  • SRS Labs SR554 - page 11

    7 USING THE SR554 WITHOUT AN SRS LOCK-IN The SR554 can be powered with an external power supply. Power is applied through the 9 pin connector as described below. PIN VOLTAGE CURRENT 1 +20 V 100 mA 6 -20 V 100 mA 7,8 Ground Both voltages are required. Pins 7 and 8 should be tied together and grounded. All other pins should be left open. COMMON MODE ...

  • SRS Labs SR554 - page 12

    8 ...

  • SRS Labs SR554 - page 13

    9 PERFORMANCE TESTS Performance tests are designed to verify that the unit is performing within the specifications. Necessary Equipment: 1. Lock-In Amplifier Freq Range 0.1 Hz - 100 kHz Output Ampl 4 mV rms - 1 Vrms Output Z 50 Ω Recommended SRS SR850/830/810 2. 50 Ω  Terminator 3. 50 Ω , 20 dB Attenuator The instructions here apply to SRS ...

  • SRS Labs SR554 - page 14

    10 ...

  • SRS Labs SR554 - page 15

    Part List 11 Ref. SRS part Value Description C 101 5-00254-501 130P Capacitor, Ceramic Di sc, 50V, 10%, SL C 102 5-00023-529 .1U Cap, Monolythic Ceramic, 50V, 20%, Z5U C 103 5-00023-529 .1U Cap, Monolythic Ceramic, 50V, 20%, Z5U C 104 5-00005-501 150P Capacitor, Ceramic Di sc, 50V, 10%, SL C 105 5-00023-529 .1U Cap, Monolythic Ceramic, 50V, 20%, Z5 ...

  • SRS Labs SR554 - page 16

    Part List 12 Ref. SRS part Value Description Z 0 0-00043-011 4-40 KEP Nut, Kep Z 0 0-00079-031 4-40X3/16 M/F Standoff Z 0 0-00089-033 4" Tie Z 0 0-00128-053 4" #24 Wire #24 UL1007 Strip 1/4x1/4 Tin Z 0 0-00150-026 4-40X1/4PF Screw, Black, All Types Z 0 0-00187-021 4-40X1/4PP Screw, Panhead Phillips Z 0 0-00208-020 4-40X3/8P F Screw, Flath ...

Manufacturer SRS Labs Category Home Theater System

Documents that we receive from a manufacturer of a SRS Labs SR554 can be divided into several groups. They are, among others:
- SRS Labs technical drawings
- SR554 manuals
- SRS Labs product data sheets
- information booklets
- or energy labels SRS Labs SR554
All of them are important, but the most important information from the point of view of use of the device are in the user manual SRS Labs SR554.

A group of documents referred to as user manuals is also divided into more specific types, such as: Installation manuals SRS Labs SR554, service manual, brief instructions and user manuals SRS Labs SR554. Depending on your needs, you should look for the document you need. In our website you can view the most popular manual of the product SRS Labs SR554.

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A complete manual for the device SRS Labs SR554, how should it look like?
A manual, also referred to as a user manual, or simply "instructions" is a technical document designed to assist in the use SRS Labs SR554 by users. Manuals are usually written by a technical writer, but in a language understandable to all users of SRS Labs SR554.

A complete SRS Labs manual, should contain several basic components. Some of them are less important, such as: cover / title page or copyright page. However, the remaining part should provide us with information that is important from the point of view of the user.

1. Preface and tips on how to use the manual SRS Labs SR554 - At the beginning of each manual we should find clues about how to use the guidelines. It should include information about the location of the Contents of the SRS Labs SR554, FAQ or common problems, i.e. places that are most often searched by users in each manual
2. Contents - index of all tips concerning the SRS Labs SR554, that we can find in the current document
3. Tips how to use the basic functions of the device SRS Labs SR554 - which should help us in our first steps of using SRS Labs SR554
4. Troubleshooting - systematic sequence of activities that will help us diagnose and subsequently solve the most important problems with SRS Labs SR554
5. FAQ - Frequently Asked Questions
6. Contact detailsInformation about where to look for contact to the manufacturer/service of SRS Labs SR554 in a specific country, if it was not possible to solve the problem on our own.

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