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SRS Labs SR550 Manual

Voltage pre-amplifier
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MODEL
SR550/552
Voltage Pre-amplifier
1290-D Reamwood Avenue
Sunnyvale, CA 94089 U.S.A.
Phone: (408) 744-9040, Fax: (408) 744-9049
Email: info@thinkSRS.com • www.thinkSRS.com
Copyright © 1999, 2001
Stanford Research Systems, Inc.
All Rights Reserved
Rev. 2.6 (08/2001)

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Summary of Contents for SRS Labs SR550

  • Page 1 MODEL SR550/552 Voltage Pre-amplifier 1290-D Reamwood Avenue Sunnyvale, CA 94089 U.S.A. Phone: (408) 744-9040, Fax: (408) 744-9049 Email: info@thinkSRS.com • www.thinkSRS.com Copyright © 1999, 2001 Stanford Research Systems, Inc. All Rights Reserved Rev. 2.6 (08/2001)
  • Page 2 02'(/ 65 Voltage Pre-amplifier manual Stanford Research Systems...
  • Page 3 SR550 Preamplifier Specifications Summary ,QSXW ,PSHGDQ.H  0Ω  S) ,QSXWV 6LQJOH HQGHG RU GLIIHUHQWLDO VZLW.K VHOH.WDEOH 0D[LPXP ,QSXWV  P9 506 IRU RYHUORDG  9G.  9D. GDPDJH WKUHVKROG 1RLVH  Q9√+] DW  +]  Q9√+] DW  +]  Q9√+] DW  +]...

  • Page 4: Operating Instructions

    $WWD.K RQH HQG RI WKH .DEOH WR WKH .RQQH.WRU RQ WKH UHDU RI WKH 65 :LWK WKH OR.NLQ SRZHU USING THE SR550 WITH THE SR510/530 RII .RQQH.W WKH RWKHU HQG RI WKH .DEOH WR WKH 7KH 65 OR.NLQV VHQVH WKH SUHVHQ.H RI 35($03 .RQQH.WRU RQ WKH UHDU RI OR.NLQ %RWK...
  • Page 5 ZKHQ ƒ RI SKDVH VKLIW LV DGGHG DV ZHOO 2Q D YLD WKH .RPSXWHU LQWHUID.H GXDO SKDVH OR.NLQ XVH WKH 5 RXWSXW WR DYRLG SKDVH VKLIWV USING THE SR550 WITH SRS DSP LOCK-INS 7KH 65 LV QRW VHQVHG E\ WKH '63 OR.NLQV...
  • Page 6 THE SR550 WITHOUT A LOCK-IN 7KH 65 .DQ EH SRZHUHG ZLWK DQ H[WHUQDO $OO WKUHH YROWDJHV DUH UHTXLUHG 3LQV  DQG  SRZHU VXSSO\ 3RZHU LV DSSOLHG WKURXJK WKH  SLQ VKRXOG EH WLHG WRJHWKHU $OO RWKHU SLQV VKRXOG EH .RQQH.WRU DV GHV.ULEHG EHORZ...

  • Page 7: Parts List

    PARTS LIST REF. SRS part# VALUE DESCRIPTION &   8 Capacitor, Electrolytic, 50V, 20%, Rad &   8 Capacitor, Electrolytic, 16V, 20%, Rad &   8 Capacitor, Electrolytic, 16V, 20%, Rad &   8 Capacitor, Tantalum, 35V, 20%, Rad &...
  • Page 8 Wire #24 UL1007 Strip 1/4x1/4 Tin  6+((7 Mylar Sheet  ;3) Screw, Flathead Phillips  65)227 Hardware, Misc.  %1& Connector, BNC  '%'%00 Cable Assembly, Multiconductor  ,16/ Connector, BNC 7-00097-720 SR550-2 Fabricated Part 7-00098-720 SR550-3 Fabricated Part PC Layout...
  • Page 9 MODEL SR552 Voltage Pre-amplifier manual Stanford Research Systems...
  • Page 10 SR552 Preamplifier Specifications Summary IInput Impedance 100 KΩ + 25 pF Inputs Single ended or differential (switch selectable) Maximum Inputs 70 mV rms for overload Damage threshold: 20 Vac, 50 Vdc Noise 1.4 nV/√Hz at 1000 Hz 1.6 nV/√Hz at 100 Hz 2.5 nV/√Hz at 10 Hz (all figures are Typical) Common Mode...
  • Page 11 Noise Figure Contour...
  • Page 12 PRE-AMP connector on the rear of lock-in. Both USING THE SR550 WITH THE SR510/530 ends of the cable are equivalent. If a longer The SR510/530 lock-ins sense the presence of...
  • Page 13 DYN RES FS Sensitivity SR552 Gain USING THE SR552 WITH SRS DSP LOCK-INS The SR552 is not sensed by the DSP lock-ins. > 50 mV The DSP lock-in does NOT compensate for the 20 db 50 mV gain of the preamp. The gain of the preamp is 20 mV set to 10.
  • Page 14 dual phase lock-in, use the R output to avoid All three voltages are required. Pins 7 and 8 phase shifts. should be tied together. All other pins should be left open. The gain will be 100 in this configuration. Grounding pin 3 will change the The SR552 without a lock-in gain to 50, and grounding pin 4 will change the The SR552 can be powered with an external...
  • Page 15 PARTS LIST REF. SRS part# VALUE DESCRIPTION 5-00040-509 1.0U Capacitor, Electrolytic, 50V, 20%, Rad 5-00030-520 2200U Capacitor, Electrolytic, 16V, 20%, Rad 2200U Capacitor, Electrolytic, 16V, 20%, Rad 5-00030-520 2.2U Capacitor, Tantalum, 35V, 20%, Rad 5-00100-517 2.2U Capacitor, Tantalum, 35V, 20%, Rad 5-00100-517 2.2U Capacitor, Tantalum, 35V, 20%, Rad...
  • Page 16 470K Resistor, Carbon Film, 1/4W, 5% R 33 4-00082-401 100K Resistor, Carbon Film, 1/4W, 5% RU7A 4-00032-401 100K Resistor, Carbon Film, 1/4W, 5% RU7B 4-00032-401 2-00025-217 SPDT Switch, On-None-On, Toggle, Right Angle 3-00124-325 79L15 Transistor, TO-92 Package 78L15 Transistor, TO-92 Package 3-00118-325 LM339 Integrated Circuit (Thru-hole Pkg)

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