AEQ AM-04 User manual

AEQ AM-04
Analog, AES/EBU and SDI embedded Audio Self-powered
Monitor with Alarm system
USER’S MANUAL
ED. 05/09
V. 1.0 - 19/05/2009
A.E.Q., S.A., the company that manufactures this equipment, is an AENOR “registered
company” under number ER-080/1/96, in compliance with ISO - EN - 9001 standard.

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Analog, AES/EBU and SDI embedded Audio Monitor with Alarm System
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INDEX
1. GENERAL 3
1.1. GENERAL PRECAUTIONS
1.1.1. READ ALL INSTRUCTIONS
1.1.2. POWER SUPPLY AND EARTH CONNECTIONS
1.1.3. PROTECTION FROM EXCESIVE SUPPLY VOLTAGE VARIATION
1.1.4. WATER AND HUMIDITY
1.1.5. VENTILATION
1.1.6. MAINTENACE
1.1.7. GUARANTEE
2. INTRODUCTION 5
2.1. BLOCK DIAGRAM
3. OPERATION 7
3.1. SELECTING SOURCES.
3.2. USING ALARMS
3.2.1. ALARM ARMING
3.3. BARGRAPH SCALES.
4. INSTALLATION 10
4.1. I/O CONNECTOR
4.2. ALARMS CONNECTOR
4.3. DATA CONNECTOR
5. CONFIGURATION 13
5.1. ADJUSTING ANALOG INPUT LEVEL
5.2. ADJUSTING ANALOG OUPUT LEVEL
5.3. ADJUSTING AUDIO MONITOR OUTPUT LEVEL
5.4. ADJUSTING BARGRAPHS BREAK-POINTS AND BALLISTINCS
5.5. INSERTING BARGRAPHS GRATICULES
6. REMOTE CONTROL PROTOCOL 22
6.1. DATA FORMAT
7. PROBLEMS SOLVING 28
7.1. SAMPLE PROBLEMS AND THEIR SOLUTIONS
8. SPECIFICATIONS 30
.

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Analog, AES/EBU and SDI embedded Audio Monitor with Alarm System
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1. GENERAL
1.1. General precautions
The following cautionary and security measures must be observed during all phases of
operation and maintenance of the unit. Failure to follow the instructions that are highlighted in
this manual could affect the specification and function of the equipment. AEQ. S.A. accepts
no responsibility for damage or injury caused by incorrect operation of the equipment.
1.1.1. Read all the instructions.
To obtain the optimum performance and reliability from the moment of installation, and to prevent
injury, incorrect operation or damage to the equipment, it is absolutely indispensable to
thoroughly read all the instructions contained in this manual before connecting and operating
the equipment.
1.1.2. Power supply and earth connections.
To reduce the risk of electric shock, the power supply of this AM-04 unit should be connected
to earth. The equipment is supplied with an earth connection socket.
1.1.3. Protection from excessive supply voltage variation
In areas which are subject to frequent variations in the supply voltage it will be necessary to
incorporate additional external protection for the AM-04 equipment, to ensure that the
equipment receives the voltage as specified in this manual.
1.1.4. Protection against water and humidity
This equipment is not recommended for use in areas subject to ingress of rain, water etc., or
sites with humid floors, or in places that are subject to a high degree of atmospheric humidity
that is condensing.
1.1.5. Ventilation, fire and inflammable vapours
The equipment must not be place close to a source of heat. The use of electrical or electronic
equipment near a source of fire or in atmosphere containing inflammable vapours is
extremely dangerous and must be avoided at all cost.
All the ventilation grilles must remain unobstructed to permit sufficient ventilation and allow
the dissipation of heat to the exterior of the equipment.
1.1.6. Maintenance
The maintenance operations of this AM-04 unit should only be carried out by qualified
technical personnel. AEQ S.A. does not accept responsibility for any damage or injury to the
equipment caused by maintenance by unauthorized persons, not for any damage or injury to
other equipment or persons caused by any unauthorized repair or maintenance operation.
A risk of severe electrical shock exists due to very high voltages that are present in
the interior of the power supply unit. Therefore proceed with absolute caution when
manipulating inside this unit.

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Analog, AES/EBU and SDI embedded Audio Monitor with Alarm System
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1.1.7. Guarantee
AEQ guarantees that this product has been designed and manufactured under a certified
Quality Assurance System and according to the ISO 9001/2002 Standard. AEQ therefore
Guarantees that the necessary test protocols to assure the proper operation and the
specified technical characteristics of the product have been followed and accomplished. This
includes that the general protocols for design and production and the particular ones for this
product are conveniently documented.
1. - The present guarantee does not exclude or limit in any way any legally recognized right
of the client.
2. - The period of guarantee is defined to be twelve natural months starting from the date of
purchase of the product by the first client. To be able to apply to the established in this
guarantee, it is compulsory condition to inform the authorized distributor or –to its effect- an
AEQ Sales office or the Technical Service of AEQ within thirty days of the appearance of the
defect and within the period of guarantee, as well as to facilitate a copy of the purchase
invoice and serial number of the product. It will be equally necessary the previous and
expressed conformity from the AEQ Technical Service for the shipment to AEQ of products
for their repair or substitution in application of the present guarantee. In consequence, return
of equipment that does not comply with these conditions will not be accepted.
3. -AEQ will at its own cost repair the faulty product once returned, including the necessary
labour to carry out such repair, whenever the failure is caused by defects of the materials,
design or workmanship. The repair will be carried out in any of the AEQ authorized Technical
Service Center. This guarantee does not include the freight charges of the product to or from
such Authorized Technical Service Center.
4. – No Extension of the Guarantee Period for repaired product shall be applied. Nor shall a
Substituted Products in application of this Guarantee be subject to Guarantee Period
Extension.
5. - The present guarantee will not be applicable in the following situations:
Improper use or Contrary use of the product as per the User or Instruction Manual; violent
manipulation; exhibition to humidity or extreme thermal or environmental conditions or
sudden changes of such conditions; electrical discharges or lightning; oxidation; modifications
or not authorized connections; repairs or non-authorized disassembly of the product; spill of
liquids or chemical products.
6. - Under no circumstances, whether based upon this Limited Guarantee or otherwise, shall
AEQ, S.A. be liable for incidental, special, or consequential damages derived from the use or
from the impossibility of using the product.
AEQ shall not be liable for loss of information in the disks or data support that have been
altered or found to be inexact, neither for any accidental damage caused by the user or other
persons manipulating the product.

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Analog, AES/EBU and SDI embedded Audio Monitor with Alarm System
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2. INTRODUCTION
The AEQ AM-04 is a professional audio monitor and alarm system housed in a 1U rack.
The unit features three internal speakers, left, right and bass.
Audio input signals can be in the form of analog, AES and SDI embedded data.
The AM-04 accepts audio inputs in groups of 4 channels from the selected source and can
direct any two from these to the speakers. The same signal is available as a line-level audio
monitor output.
Analog and AES outputs from the SDI embedded audio are also available and the SDI video
input is converted to a composite format for local monitoring purposes.
Alarms can be set to monitor audio loss, audio-over-level and sustained audio anti-phase.
Main features:
•1 x SDI input with composite output
•SDI embedded (groups 1 . 4), 2 x AES and 2 x analog audio input pairs
•Option for balanced XLR or unbalanced BNC digital audio I/O
•High-quality, high SPL audio reproduction with bass speaker and soft limiting
•4 x tri-color bargraphs with six standard scales and ballistics, adjustable color
transition points and peak-hold facility
•Alarms for audio/AES loss, over-level and anti-phase
•AES and analog audio output from SDI embedded audio
•Line level analog audio output of sources directed to loudspeakers
•Headphone connector with speaker mute
•Individually user-calibrated audio level inputs/outputs and metering
•Windows GUI and separate RS232 protocol for remote control of all alarm functions
and audio switching
•TTL port for alarms reset and remote alarms indication
•525/625 operation (manually selected)

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Analog, AES/EBU and SDI embedded Audio Monitor with Alarm System
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2.1. BLOCK DIAGRAM
All audio inputs are converted to 24 bit digital form and AES inputs are re-sampled using
sample rate converters where necessary at an internally generated 48kHz. If embedded
audio from the serial digital video input is selected, the sampling clock recovered from this is
used instead.
The SDI input is used to provide a composite video signal for local monitoring and recovered
analogue and AES audio from the current embedded audio groups. The front panel switches
do not affect these audio outputs.
The audio source switch selects which audio source is available to the speaker selectors, the
bargraphs and the analogue audio monitor line-out connectors.
The left and right speaker switches select which of the currently selected audio channels is
available at the speakers after three stages of analog processing.
The selected audio is first passed through factory preset equalization filters. Then electronic
level control is applied with the balance and volume knobs providing control voltages. Soft
limiters are used to protect the speakers. The headphone output which is taken before the
limiters, mutes the speakers when used. Alarm tone is added just before the speaker output.
When select switches are used a soft mute is applied to the audio to reduce glitches.

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Analog, AES/EBU and SDI embedded Audio Monitor with Alarm System
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3. OPERATION.
The front panel user interface consists of 5 rotary controls, an alarms switch, and four
bargraphs. In addition there is a headphone output, two LEDs for sustained anti-phase, a
further five LED indicators and a 525/625 switch at the rear of the unit.
AM-04 front control panel
3.1. SELECTING SOURCES
The audio source switch routes available sources to the speaker selectors, the bargraphs
and the monitoring line output. The possible choices are analog, AES, and embedded groups
1 to 4 from the SDI input. The AES/analog audio output, recovered from the SDI input,
follows the selected group but defaults to group 1 in the Analog and AES positions.
Source selector. Speaker selector 525/625 selector
Note: To prevent de-muxed audio from being corrupted or muted, ensure that the 525/625
switch at the rear of the unit is correct for the SDI source.
3.2. USING ALARMS
The AM-04 can provide the following warnings:
Alarm event Notes Alarm indicator
Audio loss
The currently selected four audio channels are monitored for
persistent under-level. An alarm is generated when an input is
< -30dB (-50dB for AES meter) for more than 15 seconds.
Bottom bargraph
segment flashes
amber
Audio tone, TL/serial
o/p
Audio-
overlevel
The currently selected four audio channels are monitored for
transient over-level. An alarm is generated immediately when
the first red segment of the relevant bargraph is illuminated.
Bottom bargraph
segment flashes red
Audio tone, TL/serial
o/p
Audio
antiphase
Audio pairs 1&2 and pairs 3&4 are monitored for
sustained anti-phase.
Phase LED
illuminates
Audio tone, TL/serial
o/p (if enabled)

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Analog, AES/EBU and SDI embedded Audio Monitor with Alarm System
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Note: The over-level alarm threshold can be adjusted by moving the red bar transition point.
The anti-phase tone and external alarm can only be armed via serial control.
3.2.1. ARMING ALARMS.
No alarms are generated unless alarm functions have been .armed.
Alarms switch
The front panel alarm toggle switch has four functions:
1. Left hand position held. ALARM RESET - any armed input alarms are cleared
2. Left hand position momentary. resets bargraph peak-level indicators
3. Middle position. OFF/MUTE - the internal audible alarm is muted
4. Right hand position. SET - alarm functions are selectively armed
The switch must be held in the left hand ALARM RESET position for more than 3 seconds for
a reset to occur.
In the right hand SET position the inputs currently active are automatically detected and the
appropriate alarms are selectively enabled. The unit is then set to monitor only the active
inputs. The SET function can be disabled using a serial command.
If alarms are present, moving the toggle switch to the center position will stop the audible
alarm, but retain the visual alarm indications and TTL/serial alarm outputs. The switch must
be held in the ALARM RESET position for more than 3 seconds for all alarms to be cleared.
The center position is the recommended position when alarm indication is not required.
Note: Restoring input signals to normal condition does not clear alarms.
Arming phase alarms
Only the phase LED on the AM-04 front panel is armed using the SET switch. The audio tone
and external phase alarms can only be armed using serial control.
To prevent the anti-phase detector from generating intermittent alarms, only persistent
antiphase conditions are used to raise an external alarm or generate an audio tone.
An alarm is generated when an anti-phase condition exists for more than 10 seconds.

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Analog, AES/EBU and SDI embedded Audio Monitor with Alarm System
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3.3. BARGRAPHS SCALES
The following bargraph ballistics may be selected using internal switches.
SCALE TYPE RANGE
AT
TTACK
TIME
FALLBACK
AES/EBU: 60 dB (0 to -60 dB) 1 ms 1,5 s per 20 dB decay
DIN PPM: 55 dB (+50 to-50 dB) 10 ms 1,5 s per 20 dB decay
VU: 23 dB (+3 to -20 dB) 300 ms 300 ms
BBC PPM: +12 a –12 dB – mark 7 to 1 10 ms 2,85 s - mark 7 to 1
VU EXT: 80 dB (+20 to -60 dB) 300 ms 300 ms
NORDIC: 54 dB (+12 to -42 dB) 5 ms 1,7 s per 20 dB decay
AM – 04 scales ballistics
Stick-on scale graticules, which may be applied to the space between the front-panel
bargraphs, are supplied with the unit.
AM – 04 scale graticules
Note: Bargraph color transition points and peak hold decay may also be adjusted internally.
Refer to the Configuration chapter for switch settings and graticule fitting instructions.

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Analog, AES/EBU and SDI embedded Audio Monitor with Alarm System
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4. INSTALLATION
The AM-04 1U frame may be installed in 19 inch bays with 327mm depth including typical
cable and connector depth. The dimensions of the AM-04 are 483x283x44.3. Its weight is
5kg and the max power dissipated is 60 W.
Ventilation is by natural convection and there are vents at each side and on the top and
bottom covers of the unit. Frames may be installed into bays, providing airflow through these
vents is not impeded.
All connections, with the exception of the headphone socket, are provided on the rear panel
of the frame. The video input and output uses BNC connectors, demuxed SDI audio uses a
15 way ’D’ type connector and alarms/serial control I/O is via 9 way .D. type connectors.
Digital audio I/O may be supported with either XLR connectors for balanced audio or BNCs
for unbalanced audio, depending on the AM-04 version specified at the time of ordering.
AM – 04 rear view
4.1. INPUT AND OUTPUT CONNECTOR
EL AM-04 includes tour balanced analog inputs over XLR3 male and two additional AES/EBU
inputs over XLR3 male connector. AM-04 offers two balanced analog outputs for monitoring
over XLR female connector.
The audio connections of the AEQ AM-04 comply with the AES 14-1992 (ANSIS 4.48-1992)
recommendations. This recommendation is based on IEC 268-12 of 1987. Equipment for
sound systems part 12, application of connectors for radio broadcast and similar uses.
The audio connection cables should be checked for compatibility with the standards
indicated. If this is not the case they must be exchanged or modified since problems could be
encountered with the phase of the audio signal.

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Analog, AES/EBU and SDI embedded Audio Monitor with Alarm System
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AM-04 has one 15 pin D type connector with the followings AES and analog outputs.
Pin Description
1 Ch 1+
2 Ch 1-
3 GND
4 Ch 3+
5 Ch 3-
6 GND
7 AES3 1_2
8 AES3 3_4
9 GND
10 Ch 2+
11 Ch 2-
12 GND
13 Ch 4+
14 Ch 4-
15 Chassis
Note: The analogue output is balanced and the AES output is unbalanced.
4.2. ALARMS CONNECTOR
Alarms connector pinout
Connector type: 9 ways sub-D female
Pin Description
1 Audio alarm out (TTL compatible active high)
2 Not used
3 Reset in (TTL compatible active low)
4 GND
5 Not used
6 Not used
7 Not used
8 Not used
9 Not used
Note: TTL outputs can supply up to 10mA.

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Analog, AES/EBU and SDI embedded Audio Monitor with Alarm System
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4.3. DATA CONNECTOR
Host RS232 interface connector pinout
Connector type: 9 ways sub-D female
Speed: 9600 bps
Format: 8 bits, no parity, 2 stop bits
Pin Description
1 Not connected
2 Rx (from host)
3 Tx (to host)
4 Not connected
5 GND
6 Not connected
7 Not connected
8 Not connected
9 Not connected
Note: A null-modem lead will be required to interface to a PC.

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Analog, AES/EBU and SDI embedded Audio Monitor with Alarm System
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5. CONFIGURATION
Access to AM-04 internal adjustments is obtained with the top removed.
AM – 04 internal adjustments
The following adjustments may be made:
•Monitor output level. SW3 & potentiometers main board RV1 & RV2
•Analog output level. SW1 & SW2 & potentiometers output sub-board
•Analog input level. SW4 and SW5 & potentiometers RV3/4/5/6 main board
•Bargraph settings. SW2 and SW6 main board, near power supply
Warning: Configuration instructions are for trained personnel. To avoid dangerous electric
shock, do not remove any covers or carry out adjustments unless qualified to do so.

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Analog, AES/EBU and SDI embedded Audio Monitor with Alarm System
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5.1. ADJUSTING ANALOG INPUT LEVEL
In the following tables, ON is obtained with a switch lever in the DOWN position. The
adjustments are located on the main board.
Analog input adjustments. 0dB setting shown
SW4 Analog
Input
Setting when ON SW5 Analog
Input
Setting when ON
1 1 0 dB (0dBu in = 0 on analog
scale) 1 3 0 dB (0dBu in = 0 on analog scale)
2 1 4 dB (+4dBu in = 0 on
analog scale) 2 3 4 dB (+4dBu in = 0 on analog scale)
3 1 8 dB (+8dBu in = 0 on
analog scale) 3 3 8 dB (+8dBu in = 0 on analog scale)
4 1 Variable. adjacent pot* .10
to +12 dB 4 3 Variable. adjacent pot* .10 to +12 dB
5 2 0 dB (0dBu in = 0 on analog
scale) 5 4 0 dB (0dBu in = 0 on analog scale)
6 2 4 dB (+4dBu in = 0 on
analog scale) 6 4 4 dB (+4dBu in = 0 on analog scale)
7 2 8 dB (+8dBu in = 0 on
analog scale) 7 4 8 dB (+8dBu in = 0 on analog scale)
8 2 Variable. adjacent pot* .10
to +12 dB 8 4 Variable. adjacent pot* .10 to +12 dB
Note: It is intended that only one switch lever is set ON for each analog input. The ON
position is obtained with a switch lever in the direction of the arrow (downward in the above
drawing).
*Clockwise rotation increases gain.

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Analog, AES/EBU and SDI embedded Audio Monitor with Alarm System
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5.2. ADJUSTING ANALOG OUTPUT LEVEL
In the following tables, ON is obtained with a switch lever in the DOWN position. The
adjustments are located on the SD sub-board at the rear of the unit.
Analog out adjustments. 0dB setting shown
SW1 Anlg
Output
Setting when ON SW2 Anlg
Output
Setting when ON
1 1 0 dB (0 on analog scale =
0dBu on output) 1 3 0 dB (0 on analog scale = 0dBu on output)
2 1 4 dB (0 on analog scale =
+4dBu on output) 2 3 4 dB (0 on analog scale = +4dBu on output)
3 1 8 dB(0 on analog scale =
+8dBu on output) 3 3 8 dB(0 on analog scale = +8dBu on output)
4 1 Variable. adjacent pot RV1*
0 to +12 Db 4 3 Variable. adjacent pot RV3* 0 to +12 Db
5 2 0 dB (0 on analog scale =
0dBu on output) 5 4 0 dB (0 on analog scale = 0dBu on output)
6 2 4 dB (0 on analog scale =
+4dBu on output) 6 4 4 dB (0 on analog scale = +4dBu on output)
7 2 8 dB(0 on analog scale =
+8dBu on output) 7 4 8 dB(0 on analog scale = +8dBu on output)
8 2 Variable. adjacent pot RV2*
0 to +12 dB 8 4 Variable. adjacent pot RV4* 0 to +12 dB
Note: It is intended that only one switch lever is set ON for each analog output. The ON
position is obtained with a switch lever in the direction of the arrow (downward in the above
drawing).
*Clockwise rotation increases gain.

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Analog, AES/EBU and SDI embedded Audio Monitor with Alarm System
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5.3. ADJUSTING AUDIO MONITOR OUTPUT LEVEL
In the following table, ON is obtained with a switch lever in the DOWN position. The
adjustments are located on the main board.
Analog monitor output adjustments. 0dB setting shown
SW3 Monitor
Output Setting when ON
1 Left 0 dB (0 on analog scale = 0dBu on output)
2 Left 4 dB (0 on analog scale = +4dBu on output)
3 Left 8 dB(0 on analog scale = +8dBu on output)
4 Left Variable. adjacent pot* 0 to +12 dB
5 Right 0 dB (0 on analog scale = 0dBu on output)
6 Right 4 dB (0 on analog scale = +4dBu on output)
7 Right 8 dB(0 on analog scale = +8dBu on output)
8 Right Variable. adjacent pot* 0 to +12 dB
Note: It is intended that only one switch lever is set to ON for each monitor output. The ON
position is obtained with a switch lever in the direction of the arrow (downward in the above
drawing).
*Clockwise rotation increases gain.

AEQ AM-04
Analog, AES/EBU and SDI embedded Audio Monitor with Alarm System
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5.4. DJUSTING BARGRAPHS BREAK-POINTS AND BALLISTICS
The adjustments, SW2 and SW6 are located near the power supply.
AM-04 bargraph adjustments
SW2-8 AES to analog adjust
OFF -18dBFS = 0 on analog scale
ON -20dBFS = 0 on analog scale
The .18dB and .20dB settings define the correspondence between AES input level and the 0
mark on an analog scale. This allows analog scales to be used with digital signals.
Note: When digital inputs are used with an analogue scale the analogue outputs will be less
than that indicated on the meters since the digital to analogue converters clip at +15 dB. The
effective loss is -3dB when the 18 dB position is selected and -5dB when the 20 dB position
is selected.
SW2-7 SW2-8 Peak hold decay
OFF OFF None (OFF)
OFF ON 3 seconds
ON OFF 7 seconds
ON ON Indefinite

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Analog, AES/EBU and SDI embedded Audio Monitor with Alarm System
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SW2-5 SW2-4 SW2-3 Scale type
OFF OFF OFF AES
OFF OFF ON DIN
OFF ON OFF VU
OFF ON ON BBC
ON OFF OFF Extended VU
ON OFF ON NORDIC
ON ON OFF No scale
ON ON ON No scale
Note: The OFF position is obtained with a switch lever in the direction of the arrow, (to the
right in the above drawing).
The bargraph displays have 26 LEDs. The bottom LED in each bar is reserved for the audio
alarm. The remaining 25 LED level segments may be assigned to three colored zones, red,
amber and green.
Up to 25 of the top most segments may be colored red. Up to 25 segments from the end of
the red zone downward may be colored amber and the remaining segments (if any) are
always green.
Choosing how many segments are colored red from the top of the bargraph sets the .red
zone. Select from none to 25 using SW2-2, SW2-1, SW6-8, SW6-7 and SW6-6 as follows:
SW2-2 SW2-1 SW6-8 SW6-7 SW6-6 Segment from bargraph top
OFF OFF OFF OFF OFF None
OFF OFF OFF OFF ON 1
OFF OFF OFF ON OFF 2
OFF OFF OFF ON ON 3
OFF OFF ON OFF OFF 4
OFF OFF ON OFF ON 5
OFF OFF ON ON OFF 6
OFF OFF ON ON ON 7
OFF ON OFF OFF OFF 8
OFF ON OFF OFF ON 9
OFF ON OFF ON OFF 10
OFF ON OFF ON ON 11
OFF ON ON OFF OFF 12
OFF ON ON OFF ON 13
OFF ON ON ON OFF 14
OFF ON ON ON ON 15

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Analog, AES/EBU and SDI embedded Audio Monitor with Alarm System
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ON OFF OFF OFF OFF 16
ON OFF OFF OFF ON 17
ON OFF OFF ON OFF 18
ON OFF OFF ON ON 19
ON OFF ON OFF OFF 20
ON OFF ON OFF ON 21
ON OFF ON ON OFF 22
ON OFF ON ON ON 23
ON ON OFF OFF OFF 24
ON ON OFF OFF ON 25
ON ON OFF ON OFF 25
ON ON OFF ON ON 25
ON ON ON OFF OFF 25
ON ON ON OFF ON 25
ON ON ON ON OFF 25
ON ON ON ON ON 25
Note: It is not possible to set 25 red and 25 amber segments, since there are only 25
segments for level display purposes.
Choosing how many segments are colored amber from the end of red zone, sets the amber
zone. Select from none to 25 using SW6-5, SW6-4, SW6-3, SW6-2 and SW6-1 as follows:
SW26-5 SW6-4 SW6-3 SW6-2 SW6-1 Segment from last RED ZONE
OFF OFF OFF OFF OFF None
OFF OFF OFF OFF ON 1
OFF OFF OFF ON OFF 2
OFF OFF OFF ON ON 3
OFF OFF ON OFF OFF 4
OFF OFF ON OFF ON 5
OFF OFF ON ON OFF 6
OFF OFF ON ON ON 7
OFF ON OFF OFF OFF 8
OFF ON OFF OFF ON 9
OFF ON OFF ON OFF 10
OFF ON OFF ON ON 11
OFF ON ON OFF OFF 12
OFF ON ON OFF ON 13

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Analog, AES/EBU and SDI embedded Audio Monitor with Alarm System
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OFF ON ON ON OFF 14
OFF ON ON ON ON 15
ON OFF OFF OFF OFF 16
ON OFF OFF OFF ON 17
ON OFF OFF ON OFF 18
ON OFF OFF ON ON 19
ON OFF ON OFF OFF 20
ON OFF ON OFF ON 21
ON OFF ON ON OFF 22
ON OFF ON ON ON 23
ON ON OFF OFF OFF 24
ON ON OFF OFF ON 25
ON ON OFF ON OFF 25
ON ON OFF ON ON 25
ON ON ON OFF OFF 25
ON ON ON OFF ON 25
ON ON ON ON OFF 25
ON ON ON ON ON 25
Note: Any remaining unassigned segments will be green.
5.5. INSERTING BARGRAPH GRATICULES
The following bargraph scale graticules are supplied with each AM-04:
AM – 04 scale graticules
To apply a graticule proceed as follows:
1. Peel back the protective backing from the chosen graticule
2. Apply the graticule to the space between a pair of bargraphs
3. Repeat the process for the other bargraph graticule position