Amperes LS 4600 User manual

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INSTRUCTION MANUAL
LS4600
Speaker Line Surveillance
VER 3 / 2015
LS4600 was produced out of extensive research and development effort in which every aspect of line surveillance require-
ments are studied. It solves the problem facedby many installers using the conventional line monitoring method, by adopt-
ing impedance measurement methodology. This shall eliminate the needs to add coupling capacitors to every speakers,
rigid cabling rules as well as inaccuracy in detection. Thereby, LS4600 allows branching in cabling works, direct tapping of
line to speakers as well as easier setup, without having to trim impedance against a preset reference.
LS4600 is built and run by a micro-controller , thus providing a digital platform in setting up your system. User can
set various parameters by following the menudisplayed in the LCD screen.Among them shall be the high and low limits,
buzzer on / off, display backlight, monitoring setup time, auto or manual mode as well as doing manual testing.
It shall not be difficult to understand or to install the unit, but it is recommended that a trained personnel is engaged in order
to tap the many features available. Before installation, we suggest a thorough read through of the manual is done to avoid
any unnecessary damage to your setup.
Please keep this manual handy for any future references.

Parts Identifications
PAGE 2 LS4600 | 6 CHANNEL SPEAKER LINE SURVEILLANCE
16
8
7
2 3 4 5
910 11 12 13
Front view
Rear view
1. LCD DISPLAY
2. MENU BUTTON
3. ENTER BUTTON
Previous key to scroll back to last menu or sub menu.
4. PREV BUTTON
Next key to scroll forward of menus.
5. NEXT BUTTON
6. GREEN NORMAL LEDs
7. RED FAULT LEDs
2x 16digitLCDdisplay withbacklight settingisusedas programmingguideas wellasmeasurement indications.The
back light can be set to off if required by accessing menu 6 (see programming chart). The back light is set to ON in
default.
Menu switch is used to access main menus. Once pressed momentarily, it shall revert to Menu 1.0 - Setup. Use
Next and Prev keys to scroll through other main menus. Once the relevant menu is found, use Enter key to access
its following sub menu. To exit sub menus, press Menu key momentararily.
Used to enter required main menu or its sub menus, confirm values, data or settings.
The arrays of green LEDs provides the status of the channel which show the normal condition if lit. If both green
and red LEDs do not lit for the particular channel, it means that the channel has been bypassed from monitoring.
Once lit, it indicates that the particular channel is at fault ; either open, short or leakage. Refer to the LCD panel for
exact condition of fault.

Parts Identifications
PAGE 3LS4600 | 6 CHANNEL SPEAKER LINE SURVEILLANCE
The unit requires 24V DC power supply and recommended PSU shall beAmperes PS9400. Only use regulated power
supply if other than PS9400 is installed.
9. 24V DC POWER SUPPLY PORT
If fault is detected, a buzzing sound shall be emitted with the LED lit. Buzzer alert can be turned off via programming
and this is indicated by this LED.
8. BUZZER LED
When line monitoring is initiated either manually or auto, it shall start in sequence from ch.1 to 6. With each channel
under monitoring, a dry contact shall be available at its correspondence zone. This shall provide 24V overriding
voltage to volume controllers or local patch panel with overriding relay, thus allowing direct measurement to the
speakers. (Refer to Connecting the unit section of the manual). Overriding is required for accurate sensing in which
volume controllers set in various position shall have different impedances and such circumstances shall provide false
alarm or alert.
Recommended practice is that every zone shall have its own 24V overriding circuit back to the rack. If all the
overriding circuits are looped, and if the particular zone with volume controller is set to off, the monitoring activity shall
cause a burst of audio signal (such as BGM), which lasted for approximately 18 seconds. This shall happen only
when a BGM source is presence. If the particular zone is set to OFF (without BGM), the monitoring activity shall not
emit audible sound.
10. ZONE TRIGGER OUTPUT PORT
It is for connections of incoming 100V line signal and output to speakers. Refer to Connecting the Unit in following
section.
11. AMP / ZONE IN - OUT PORTS
Whenever a fault condition is detected, this port shall provide a dry contact to link to external alerting devices, such as
mimic panel, etc.
12. OUTPUT FAULT CONTACT
Event triggered data shall be transmitted with RS485 protocol. This feature is optional and shall be available in future.
13. RS485 OUTPUT (OPTIONAL)

Configuration / Schematic
PAGE 4 LS4600 | 6 CHANNEL SPEAKER LINE SURVEILLANCE
Zone 1
Speakers Parallel
ZONE 6
RACK MOUNT
ZONE
VOL.CTRL.
SPEAKER
ZONE
SELECTOR
POWER AMPLIFIERS
LS4600
24V DC VOLTAGE
AUDIO SIGNAL
INPUTS NOT
SHOWN
VOLUME
CONTROLLERS /
PATCH PANEL
AUDIO SIGNAL
24V DC OVERRIDING
The LS4600 detects circuit faults using impedance measurement method. In general, there is no limitation on how the
external cabling to speakers or volume controller are run, ie. branching is allow and does not need end line resistors as well
as speaker capacitor couplings.
LS4600 have been improve all accuracy. It is recommended that periodical manual checking or setup to be made as
connections may deteriorate over time and thus affecting overall impedance value.
Only 4 wire system is suitable for measurement. 3 wire system may cause undesirable result each time checking is being
made due to the presence of volume controllers.
PUBLIC ADDRESS POWER AMPLIFIER
SIGNAL -40 dB
SIGNAL -10 dB
POWER
PROTECT
CLIP
PA 2480
amperes
PUBLIC ADDRESS POWER AMPLIFIER
SIGNAL -40 dB
SIGNAL -10 dB
POWER
PROTECT
CLIP
PA 2480
amperes
ZS5121
OVERRIDE
21 3 54
SPEAKER ZONE SELECT
6 7 8 9 10 1211
CALL
ALL
Zone 2
Direct VC Zone 3 VC Parallel Zone 6

PAGE 5LS4600 | 6 CHANNEL SPEAKER LINE SURVEILLANCE
Connecting The Unit
24V DC OVERRIDING
CONTROL (EP1200A ETC) +24V
RS 485
OUTPUT
(OPTIONAL)
VOLUME CONTROLLERS WITH
OVERRIDING RELAY
+24V-VE
TO SPEAKERS
TO SPEAKERS
FROM ZONE SELECTOR
100V LINE OUTPUT FROM ZONE SELECTOR
100V LINE OUTPUT
24V DC
POWER
repeat
Loop the 24V DC
overriding trigger to the
Zone Trig. O/P port
Max rating per zone
trigger is 3A. Use
external relay if
required
+VE
-VE -VE
+VE repeat
add
diode
TO MIMIC PANEL/
EXTERNAL FAULT
INDICATOR ETC
(ADRY CONTACT OUT)
It is recommended that separate zone shall have separate overriding circuit. Otherwise, loop all outputs.
Disadvantage of looping all outputs :
Ifaparticularzoneisactive(zoneon)butthevolumecontrolleratacertainareaisshutoff(eg.zone1),activationofmonitor-
ing from LS4600 of zone 2 shall override the volume controllers at zone 1, thus a burst of audio shall be heard ( such as
BGM being currently played).
Programming And Setup
MAIN MENU
1.0 SETUP
o<>
2.0 MANUAL TEST
o<>
3.0 MEM. RECALL
o<>
4.0 AUTO TEST
o<>
5.0 BUZZER
o<>
6.0 LCD LIGHT
o<>
7.0 MEMORY
o<>
Thelast partof the unitinstallation shallbe programmingaswell asentering requiredvalues. Programthe unit byfollowing
the menus shown in the LCD display panel. Each of the menu and sub menus shall be explained in the following sections.
In general, there are 7 main menus as shown below :
Initializing...
LS4600 VER: X.XX AMPERES ELEC. S/B
LINE SUPERVISORY
>>
POWER UP
TO ENTER SETUP
1.0 SETUP
o<>
NOTE :
>>
< denotes PRE
> denotes NEXT and
[] as ENTER
Upon powering for the first time, the unit shall display introduction wordings in
running mode. The green and red LEDs shall lit in sequence indicating
sequence of initialisation.
Minumum setuprequired for thesystem torun shall beMenu 1.0 and4.0. Ifother menus arenot set,they shall runaccording
to default parameters.
To begin programming, press, hold and release MENU button, and
the SETUP menu shall be displayed.

PAGE 6 LS4600 | 6 CHANNEL SPEAKER LINE SURVEILLANCE
1.0 Setup Menu
Press ENTER and PRE or NEXT key for setting up remaining channels or MENU to return to previous menu.
BP = Bypass
1.1 CH.No.#
Accept?/Bypass? 1.1 CH.No.# Bypass ?
1.1 CH.No.#
Accept ?
1.1 CH.No.#
Bypass OK
1.1 CH.No.# *
o<> Imp xxxx
1.1 CH.No.#
Accept OK
1.2 BP ON FAULT
o<> <ON> CH.# 1.2 BP ON FAULT o<> <OFF> CH.#
ENTER
>>
ENTER
>>
NEXT
>
NEXT
>
PRE
>
PRE
>
* Default <ON>
>
ENTER
>
>
Channel bypass mark *
BASIC SETUP
Use PRE or NEXT keys to select the required channel. Imp value shall be shown, otherwise OPEN or SHORT shall
appear. Press ENTER to proceed to the next setting for the selected channel. A channel with or without value can be
bypassed from surveillance or accepted for monitoring. Select PRE to accept for monitoring or NEXT to bypass.
In BASIC Mode Hi and Lo function will be disabled, only OPEN and SHORTmonitoring available.
To enable Hi and Lo function useADVANCE setup in menu 1.0 (SETUP)
The ' * ' symbol will show when the value measured is out of preset range of Hi and Lo limits.
Short or Open condition is self explainatory.
Afault condition shall have red LED lit and vice versa.
NEXT to Menu 2.0
>
1.0 SETUP
o<>
PRE to Menu 7.0
>
ENTER
>
1.0 BASIC SETUP
o<>
ENTER
>
1.1 CH.No.#
o<> Imp xxxx
ENTER
>
Use < or > to toggle between Basic and
Advance Setup
Press < or > to switch channel number.
Press < or > to accept the value
of status.
MENU
Back to Menu 1.0
>
There are 2 modes of operation available : Basic andAdvance.
In Basic setup mode, LS4600 shall detect the circuit for Open and Short only. The timing of detection shall depend on the
intervals set inAuto Detection mode, ( Refer toAuto Test section ). Follow the steps below to use this mode.

PAGE 7LS4600 | 6 CHANNEL SPEAKER LINE SURVEILLANCE
1.0 Setup Menu
ENTER
>
ADVANCE SETUP
Use PRE or NEXT keys to select the required channel. Imp value shall be shown, otherwise OPEN or SHORT shall
appear. Press ENTER to proceed to the next setting for the selected channel.
A channel with or without value can be bypassed from surveillance or accepted for monitoring. Select PRE to accept
for monitoring or NEXT to bypass.
The preselected values for high limit and low limits are from 00 ohm to 500 ohm, with incremental of 20 Ohms. We
recommend 50 % higher or lower values to avoid unnecessary false triggering.
Once the required value is selected, press ENTER to proceed to the next sub menu.
1.0 SETUP
o<>
1.0 SETUP
o<>ADVAN SETUP
ENTER
>
1.1 CH.No.#
o<> Imp xxxx
ENTER
>
1.1 CH.No.#
Accept? / Bypass
1.1 CH.No.#
Accept OK
ENTER
>
Accept
1.2 BP ON FAULT
o<> <ON> CH.#
ENTER
>
1.3 H-LIMIT +##
o<> Imp xxxx
1.4 L-LIMIT -##
o<> Imp xxxx
ENTER
>
ENTER
>
1.5 EXIT ?
o<> Y?/N?
To select Bypass
or On upon fault
detection
Bypass 1.1 CH.No.#
Bypass OK
1.1 CH.No.# *
o<> Imp xxxx
>
Channel bypass mark *
>
On selected set High-limit
On selected set Low-limit

PAGE 8 LS4600 | 6 CHANNEL SPEAKER LINE SURVEILLANCE
2.0 Manual Test
3.0 MEM RECALL
O<>
3.1 CH#=xxxx
H=xxxx L=xxxx
>
ENTER
>
# Use PRE or NEXT keys
to select channel number
>Press NEXT to Menu 4.0
PRE to Menu 2.0
>
MENU
ENTER
3.0 Mem. Recall
Use this function to test speaker line impedance of each channel. Please note that the value shown are approximated
figure. To obtain the actual value, use a dedicated Impedance Measurement meter.
This menu enable the user to view the values of impedance ofselected channels, which had been accepted earlier
during setup (Menu 1.0).
To clear the memories, use the MEMORY Menu (Menu 7.0) and all previously stored values and settings shall be erased.
2.0 MANUAL TEST
o<>
PRE to Menu 1.0
>
>Press NEXT to Menu 3.0
>
ENTER
2.1 +Hi>xxxx
CH# Imp XXXX
2.2 EXIT
O<>
>
ENTER
>
To Sub Menu 2.0
>
>
To Sub Menu 2.0 YES NO
To Sub Menu 2.1
< or > to select Ch number and check
impedance
< or > to select Yes or No

PAGE 9LS4600 | 6 CHANNEL SPEAKER LINE SURVEILLANCE
4.0 Auto Test
4.0 AUTO TEST
O<>
4.1 SELECT TIMER
O<> Test Seq=off
>
ENTER
# Use < or >
to select Auto or Manual mode
>Press NEXT to Menu 5.0
PRE to Menu 3.0
>
4.2 AT.TEST ON?
O<> Y?/N?
>
ENTER
LS4600 VX.XX[SPEAKER LINE SURVEILLANCE]
<<Auto Test xxh:xxm:xxs<<-Remaining..<xxx
>
This menu must be accessed for first time programming, in which shall determine how the unit shall run, either
manually or automatically.
If SELECT TIMER mode is selected, testing interval time should be entered, otherwise, the default timer is set to off.
Once timer has been entered and auto mode selected, the unit shall immediately start testing sequence and the
counter began from then onwards.
To access to the main menu again, press Menu key
>
Return to Submenu 4.0
If Off is selected If a test interval is selected (from 1 min to 24 hours). By
default, auto mode is set to off. Use < or > key to select time.
ENTER
>
>
If NO is selected
Return to Submenu 4.0
Press < or > to select ON or OFF for Auto
Test.
IfAuto Test is ON
Menu
The test sequence is started and
repeated at the preset interval.
Remainning time for the next
sequence is displayed.
5.0 Buzzer
5.0 BUZZER
o<>
5.1 KEY BEEP
ENTER >Press NEXT to Menu 6.0
PRE to Menu 4.0
>
5.2 FAULT BUZZER
>
Buzzer is available for button pressing and alert / fault signal. This feature can be turned off to fit to ones' preference.
For fault alert buzzer, if this is switch on, the Buzzer LED shall not lit when a failure is detected. If the buzzer is switched off,
the buzzer LED and the correspondence channel fault LED shall lit.
>
ENTER
>
Press < or > to select ON / OFF
whenever fault is detected.
Return to Buzzer Menu
Press < or > to select ON / OFF for
key select.

PAGE 10 LS4600 | 6 CHANNEL SPEAKER LINE SURVEILLANCE
6.0 LCD Back Light
6.0 LCD LIGHT
>
ENTER
This menu provides the option to turn ON or OFF the LCD back light.
6.0 LCD BACK LIGHT >Press NEXT to Menu 7.0
PRE to Menu 5.0
>
Press<or>toswitchONorOFF BackLight
for LCD display.
>
ENTER
Return to LCD Back Light Menu
7.0 Memory
7.0 MEMORY
o<>
7.0 MEMORY
O<> RESET?
>
ENTER
>Press NEXT to Menu 1.0
PRE to Menu 6.0
>
7.1 MEMORY SAVE
O<> Y?/N?
>
7.0 MEMORY
O<> SAVE?
If earlier settings are to be wiped off, use this memory reset and the system shall return to default.
After completing all channel setting, the changed parameters MUST be saved.
DC power to the unit can be switched off when system is not in use. Settings shall be retained in the memory.
>
Save > <
>
>
< or > to reset or save the
memory and press Enter
< or > to select
ENTER
Select < or >
to save / No
Return to Memory Menu

Technical Specifications
PAGE 11LS4600 | 6 CHANNEL SPEAKER LINE SURVEILLANCE
Summary Of Features
6 channel speaker line monitoring and expandable
Basic andAdvance level of detection setup
Detection of faulty cable and speaker in individual zone or circuit
Impedance measurement method - no capacitor coupling required and cable branching allowed.
Faulty circuit disconnection option
Built in impedance meter, range within 10 Ohm to 10 K Ohm
LCD display to facilitate system setup, measurement and monitoring
Fault alert with LED indicators and switchable buzzer
Detection test interval setting from 1 min to 48 hours
Short burst test signal, minimizing interruption to PAoperation
User setting for detection sensitivity for open, short and leakage
Aux 24V DC output for volume controller overriding during testing mode
■
■
■
■
■
■
■
■
■
■
■
■
Operating voltage 24V DC via PS9400 PSU
Power consumption 3.5W
Capacity 6 channel and expandable
Processor PIC micro controller with 12 bit ADC
Impedance detection range 10 to 10 K Ohm
Power measurement range 3 to 1000W 100V line
Measurement accuracy +/- 3% within range
Pilot tone injection frequency 1 KHz
Pilot tone signal output level 5V sine
Transmittal detection period 3 seconds per channel
Detection interval User preset from 1 min to 48 hrs
Sensitivity setting User preset at each channel
Indicators - LED Normal, Fault, Buzzer,Auto run
Display LCD 2 x 16 characters w back light
Audible output signal Continuous buzzer with Off option
Dry contact setting 3A
DC output in detection mode 24V DC for individual channel
Dimensions (WxHxD) 482 x 44 x 180 mm
Weight 2.3 kg
Note:
The above specifications are correct at time of printing but subjected to changes without prior notice due to product
improvements.

Warranty Conditions
Disclaimer
AMPERES ELECTRONICS SDN BHD
MADE IN MALAYSIA
Published : March 2015
ISO 9001: 2008
Design & Manufacture of Public Address Equipment and Systems
Certicate No. 16895 / A / 0001 / UK / En
Only Amperes Electronics Service Centres are allowed to make warranty repairs : a list of Amperes Electronics
Service Centres may be asked for by the purchaser or send directly to Amperes Electronics Sdn Bhd at 70 Jalan
Industri PBP 3, Tmn Perindustrian Pusat Bandar Puchong, 47100, Puchong, Selangor, Malaysia or its authorized
master distributor, TNT Links Sdn Bhd / MyPA Systems Sdn Bhd. This warranty is not valid if repairs are
performed by unauthorized personnel or service centres.
This warranty covers only repairs and replacement of defective parts ; cost and risks of transportation as well as
removal and installation of the product from the main system are for the account of the purchaser. This warranty
shall not extend to the replacement of the unit.
This warranty does not cover damages caused by misuse, neglect, accident of the product as well as using the
product with power supply voltage other than shown on the product, or any other power supply source / adaptor
not recommended by the manufacturer.
This warranty does not cover damages caused by fire, earthquakes, floods, lightning and every cause not directly
related to the unit.
This warranty does not include any indemnity in favor of the purchaser or the dealer for the period out of use of the
unit; moreover the warranty does not cover any damages which may be caused to people and things when using
the product.
This warranty certificate is valid only for the described product, and is not valid if modifications are made on this
certificate or on the identification label applied on the product.
This warranty covers all the material and manufacturing defects and is valid for a period of 12 months from the
date of purchase or for a longer period in countries where this is stated by a national law. In this case, the
extension is valid only in the country where the product is purchased.
Amperes Electronics Sdn Bhd is not obliged to modify previously manufactured products under warranty if the
design changes or improvements are made.
Information contained in this manual is subject to change without prior notice and does not represent a
commitment on the part of the vendor. AMPERES ELECTRONICS SDN BHD shall not be liable for any loss or
damages whatsoever arising from the use of information or any error contained in this manual.
It is recommended that all services and repairs on this product be carried out byAMPERES ELECTRONICS SDN
BHD or its authorized service agents.
AMPERES series must only be used for the purpose they were intended by the manufacturer and in conjunction
with this operating manual.
AMPERES ELECTRONICS SDN BHD cannot accept any liability whatsoever for any loss or damages caused by
service, maintenance or repair by unauthorized personnel, or by use other than that intended by the manufacturer.