background image

2.3 

LPA-Series AUX IN installation  

The LPA-Series receiver can connect to the AUX INPUT of a public address 
amplifier if the LPA receiver is installed in close proximity to the PA amplifier.   

 
 

 

The RCA phono cables required for interconnection should be no longer than 6 feet.  Installations requiring 
LPA receiver location greater than 6 feet from the PA amplifier must use the 600

Ω

 balanced output. 

 

If the AUX INPUT of the PA amplifier is already used, the LPA receiver is connected between the AUX audio 
source (stereo tuner, cd player, tape player, etc.) and the PA amplifier as shown.   

 

Audio from the AUX audio source will be routed to the PA amplifier as normal when the LPA receiver is not 
in use.  When an LPA radio message is received, the LPA receiver will disconnect the AUX audio source 
and replace it with the radio transmission.  Once the radio message is complete the AUX audio source is re-
connected to the PA amplifier. 

 

When using the PA amplifier AUX INPUT it is important to remember that received messages from the LPA 
receiver will be treated exactly the same way any other audio device connected to the AUX INPUT.  On 
many PA amplifiers the AUX INPUT audio is automatically muted whenever audio is present on the MIC 
INPUT.  Check the owner’s manual for the PA amplifier to determine AUX INPUT operation and the effect it 
will have on LPA operation. 

 

600 

 
Section 2

 

Installation 

9

  

 

RCA PHONO CABLES 
6 FT. MAXIMUM 

RCA PHONO CABLES 

STEREO TUNER 

PUBLIC ADDRESS AMPLIFIER 

(REAR PANEL) 

Ω

 

MIC-1 

GND  COM  HOT

600 

Ω

 

MIC-2 

SPEAKER 

AUX INPU

COM   4

Ω

     8

Ω

     16

Ω

   COM   25V    70V 

T

L         R

UNSWITCHED 

L R 

AUX IN 

HOT

GND COLD 

600

Ω

 BALANCED 

L  

AUX OUT 

LPA-SERIES RECIEVER 

(SIDE PANEL) 

Summary of Contents for LPA-V150

Page 1: ...d Quiet Call and Quick Assist are registered trademarks of Ritron Inc Loudmouth Quick Talk Liberty and RadioNexus are trademarks of Ritron Inc Call 800 USA 1 USA For the right Wireless Solutions for y...

Page 2: ......

Page 3: ...le 2 Interference Eliminator Programmable QC Tone Codes 14 Table 3 Digital Interference Eliminator Programmable DQC Tone Codes 14 3 4 Program Paging Codes 15 Table 4 2 Tone Paging Codes 15 3 5 Program...

Page 4: ...alanced AUX input OR a 600 balanced MIC input Allows personnel to remain mobile while providing access via 2 way radio access to existing PA speakers located throughout the facility If the AUX input o...

Page 5: ...he case using the lockwashers and nuts included in the Mounting Bracket kit 4 Program the LPA Series receiver per the instructions in the Programming section of this manual leaving the RPS 1A power su...

Page 6: ...channel will be able to access the loudspeaker The 2 way radio s LPA channel and the LPA receiver must be programmed for the same DQC code All Ritron radios offer 104 different field programmable DQC...

Page 7: ...erwise all 2 way communication is heard on the wired PA system Any user on your 2 way channel can broadcast over the wired PA system once the LPA receiver is activated even if their 2 way radio is not...

Page 8: ...routed from the LPA receiver to the PA amplifier In general the antenna of the LPA receiver is the pivot point for all communication We re trying to optimize the location of the antenna in order to re...

Page 9: ...e are optimized Hints Typically the higher the antenna the better but NOT always Every site is different Thick reinforced concrete steel walls and vertical fire panels in ceilings can work to block th...

Page 10: ...ate with person 1 at the fixed location 2 2 2 2 2 2 Alternative locations for person 1 Alternative locations for person 1 Person 1 remains in a fixed location on the top floor of a centrally located b...

Page 11: ...t by locating it too closely to metal walls inside an elevator shaft in recessed girders firewalls or ceilings Section 2 Installation 8 2 2 LPA Series radio receiver installation Installation of the L...

Page 12: ...eceived the LPA receiver will disconnect the AUX audio source and replace it with the radio transmission Once the radio message is complete the AUX audio source is re connected to the PA amplifier Whe...

Page 13: ...opposite currents which cancel out The separate shield of a balanced audio connection also yields a noise rejection advantage over an unbalanced two conductor arrangement such as AUX IN where the shie...

Page 14: ...it Selcall Paging Code 7 E r nte a 2 digit Feature code from Table 5 to Enable or disable a Pre Announce Tone Enable or disable Record and Play operation Enable or disable Weather Alert feature VHF mo...

Page 15: ...for DQC and the last three digits indicate the DQC code see Table 3 on page 16 In this example an LPA U450 was programmed to operate on the Brown Dot frequency of 464 500 MHz Frequency code 04 with a...

Page 16: ...clicking the PROGRAM button until the program display shows the desired number Pause the radio sounds a low tone and will show a hyphen across the center of the display to indicate that it is ready to...

Page 17: ...5 50 462 9125 12 5 51 464 4875 12 5 52 464 5125 12 5 53 464 5375 12 5 54 464 5625 12 5 55 466 0375 12 5 56 466 0625 12 5 57 466 0875 12 5 58 466 1125 12 5 59 466 1375 12 5 60 466 1625 12 5 61 466 187...

Page 18: ...nd show a hyphen across the center of the display to indicate that it is ready to accept the next digit 8 Enter the 2 nd digit of the 2 Tone or Selcall code by clicking the PROGRAM button until the pr...

Page 19: ...ay to indicate that it is ready to accept the next digit 7 Press and release the ENTER button to save your programming A triple beep will sound to indicate that programming was successful and a hyphen...

Page 20: ...ume setting 4 Enter the 1st digit of the volume setting by clicking the PROGRAM button until the program display shows the desired number Pause the radio will sound a low tone and show a hyphen across...

Page 21: ...ency code by clicking the PROGRAM button until the program display shows the desired number Pause the radio sounds a low tone and will begin playing the NOAA weather broadcast over the PA system speak...

Page 22: ...complete 8 Return the portable base station or mobile radio to the normal operating channel Section 4 Operation 19 4 2 Selcall Paging O 2 access the PA system y PA system speaker mitting to be sure t...

Page 23: ...can talk over the speaker without the need for 2 tone paging g a signal before 2 tone is once again required for access Factory default Two Tone Reset Time is 5 seconds Can be used in conjunction wit...

Page 24: ...life ore speaker to allow the radio to wake up Low Battery Alert Tone Enable this feature whenever the LPA receiver is battery powered and a short tone will be heard at the end of each broadcast to i...

Page 25: ...s the result of the PA system speaker audio getting back into the microphone of the radio being used to access the LPA receiver This is a problem with the calling radio not the LPA receiver Although t...

Page 26: ...4 VAC peak audio routed directly to AUX OUT when LPA Series is not receiving ance Output Imped 50k unbalanced 6 Connectors Screw terminals 00 MIC OUT HOT COLD ground Maximum Output 200mVAC peak Out 60...

Page 27: ...tance C C M wide 5 0 kHz wide 5 0 kHz narrow 3 75 kHz narrow 3 75 kHz T wide 0 15 V 123 dBm wide 0 16 V 123 dBm ypical sensitivity 12 dB SINAD narrow 0 19 V 121 dB narrow 0 18 V 122 dB 65 MHz m m L O...

Page 28: ...ode C Set Volume Enter Volume Code U Record and Play On Enter Record and Play On Code A or Off Enter Record and Play Off Code A Pre Announce Tone On Enter Pre Announce On Code A or Off Enter Pre Annou...

Page 29: ...articular purpose are limited to the duration of this limited warranty as it applies to the covered product Incidental and consequential damages are not recoverable under this warranty this includes l...

Reviews: