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Communications Systems | PLN‑DMY60 Plena Dummy Load




PLN‑DMY60 Plena Dummy Load
                                                               ▶ Provides filtered load at 20 kHz
                                                               ▶ Makes longer loudspeaker lines possible
                                                               ▶ Three power settings
                                                               ▶ Fits on built-in mounts on selected Bosch
                                                                 loudspeakers




The Plena Voice Alarm System employs a simple and easy         The dummy load connects in parallel to the last
to use method of loudspeaker surveillance based on             loudspeaker on a line, which must be a Bosch
impedance measurement. On long wire runs, external             loudspeaker with the appropriate mounting studs. It has a
influences, such as cable capacitance and speaker              jumper to set the load (at 20 kHz) to 8, 20 and 60 W,
impedance, can negatively influence the reliability of the     according to the results calculated by the Dummy Load
measurements. The dummy loads provide a filtered load          Calculator.
exclusively at the pilot tone frequency. This greatly
                                                               The Dummy Load Calculator is a spreadsheet that uses
increases the dependability of impedance measurements,
                                                               macros to calculate whether an application can use a
providing reliable break or short circuit detection, even on
                                                               dummy load, and what the optimal load setting would be.
long wire runs.
                                                               The spreadsheet is available from all Bosch dealers.


Functions
                                                               Certifications and Approvals
To improve the performance of the impedance
measurement Bosch Security Systems introduced the
                                                               Region         Certification
Plena Dummy Load. It increases the loudspeaker load at
the monitored frequency of 20 kHz, while having a              Europe         CE              Declaration of Conformity
minimal load in the normal audio frequency range.              Poland         CNBOP

When connected in parallel with the last loudspeaker on a
line, it will increase the percentage of impedance present
at the end of the line, thus increasing the number of          Parts Included
loudspeakers that can be attached. At the same time, it
                                                               Quantity Component
will also increase the margin for masking by cable
capacitance, allowing longer cable lengths.                    12       PLN-DMY60 Plena Dummy Load
                                                               1        Application note




                                                                                                      www.boschsecurity.com
2 | PLN‑DMY60 Plena Dummy Load



  Technical Specifications
  Electrical

  Input
  Connector                                 High temp flying leads
  Voltage                                   100 V loudspeaker line
  Load                                      8, 20 and 60 W
  Mechanical

  Dimensions (H x W x D)                    17 x 30 x 50 mm
  Mounting                                  WLS II
  Weight                                    Approx. 80 g
  Environmental

  Operating temperature                     -10 ºC to +55 ºC (14 ºF to +131 ºF)
  Storage temperature                       -40 ºC to +70 ºC (-40 ºF to +158 ºF)
  Relative humidity                         <95%



  Ordering Information
    PLN‑DMY60 Plena Dummy Load                                       PLN-DMY60
    set of 12 dummy loads




Americas:                                Europe, Middle East, Africa:         Asia-Pacific:                   Represented by
Bosch Communications Systems             Bosch Security Systems B.V.          Robert Bosch (SEA) Pte Ltd
12000 Portland Avenue South              P.O. Box 80002                       11 Bishan Street 21
Burnsville, Minnesota 55337, USA         5600 JB Eindhoven, The Netherlands   Singapore 573943
Phone: +1-800-392-3497                   Phone: + 31 40 2577 284              Phone: +65 6571 2600
Fax: +1-800-955-6831                     Fax: +31 40 2577 330                 Fax: +65 6571 2698
audiosupport@us.bosch.com                emea.securitysystems@bosch.com       apr.securitysystems@bosch.com
www.boschsecurity.com                    www.boschsecurity.com                www.boschsecurity.com



© Bosch Security Systems Inc. 011 | Data subject to change without notice
T3329771147 | Cur: en-US, V21, 27 Jan 2011

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  • 1. Communications Systems | PLN‑DMY60 Plena Dummy Load PLN‑DMY60 Plena Dummy Load ▶ Provides filtered load at 20 kHz ▶ Makes longer loudspeaker lines possible ▶ Three power settings ▶ Fits on built-in mounts on selected Bosch loudspeakers The Plena Voice Alarm System employs a simple and easy The dummy load connects in parallel to the last to use method of loudspeaker surveillance based on loudspeaker on a line, which must be a Bosch impedance measurement. On long wire runs, external loudspeaker with the appropriate mounting studs. It has a influences, such as cable capacitance and speaker jumper to set the load (at 20 kHz) to 8, 20 and 60 W, impedance, can negatively influence the reliability of the according to the results calculated by the Dummy Load measurements. The dummy loads provide a filtered load Calculator. exclusively at the pilot tone frequency. This greatly The Dummy Load Calculator is a spreadsheet that uses increases the dependability of impedance measurements, macros to calculate whether an application can use a providing reliable break or short circuit detection, even on dummy load, and what the optimal load setting would be. long wire runs. The spreadsheet is available from all Bosch dealers. Functions Certifications and Approvals To improve the performance of the impedance measurement Bosch Security Systems introduced the Region Certification Plena Dummy Load. It increases the loudspeaker load at the monitored frequency of 20 kHz, while having a Europe CE Declaration of Conformity minimal load in the normal audio frequency range. Poland CNBOP When connected in parallel with the last loudspeaker on a line, it will increase the percentage of impedance present at the end of the line, thus increasing the number of Parts Included loudspeakers that can be attached. At the same time, it Quantity Component will also increase the margin for masking by cable capacitance, allowing longer cable lengths. 12 PLN-DMY60 Plena Dummy Load 1 Application note www.boschsecurity.com
  • 2. 2 | PLN‑DMY60 Plena Dummy Load Technical Specifications Electrical Input Connector High temp flying leads Voltage 100 V loudspeaker line Load 8, 20 and 60 W Mechanical Dimensions (H x W x D) 17 x 30 x 50 mm Mounting WLS II Weight Approx. 80 g Environmental Operating temperature -10 ºC to +55 ºC (14 ºF to +131 ºF) Storage temperature -40 ºC to +70 ºC (-40 ºF to +158 ºF) Relative humidity <95% Ordering Information PLN‑DMY60 Plena Dummy Load PLN-DMY60 set of 12 dummy loads Americas: Europe, Middle East, Africa: Asia-Pacific: Represented by Bosch Communications Systems Bosch Security Systems B.V. Robert Bosch (SEA) Pte Ltd 12000 Portland Avenue South P.O. Box 80002 11 Bishan Street 21 Burnsville, Minnesota 55337, USA 5600 JB Eindhoven, The Netherlands Singapore 573943 Phone: +1-800-392-3497 Phone: + 31 40 2577 284 Phone: +65 6571 2600 Fax: +1-800-955-6831 Fax: +31 40 2577 330 Fax: +65 6571 2698 audiosupport@us.bosch.com emea.securitysystems@bosch.com apr.securitysystems@bosch.com www.boschsecurity.com www.boschsecurity.com www.boschsecurity.com © Bosch Security Systems Inc. 011 | Data subject to change without notice T3329771147 | Cur: en-US, V21, 27 Jan 2011