Notifier AFL-TS Technical manual

1
Audio Fiber Link Instructions P/N 52230:A 3/26/04
General Description
The following Audio Fiber Link devices process and distribute low level audio signals via fiber optic media.
•AFL-TS - The AFL-TS single-mode transmitter accepts low-level audio signals from the Notifer Audio Message Genera-
tor (AMG-1 or AMG-E). It converts the low-level audio signal to modulated light, which is then transmitted through sin-
gle-mode fiber optic cable.
•AFL-RS -The AFL-RS single-mode receiver accepts the modulated light that has been transmitted from the AFL-TS,
then converts it back to low level audio signals. These signals can feed AA-30, AA-100, AA-120 and XPIQ amplifiers, as
well as the next daisy-chained AFL-TS.
•AFL-TM - The AFL-TM multi-mode transmitter accepts low-level audio signals from the Notifier Audio Message Genera-
tor (AMG-1 or AMG-E). It converts the low-level audio signal to modulated light, which is then transmitted through multi-
mode fiber optic cable.
•AFL-RM - The AFL-RM multi-mode receiver accepts the modulated light that has been transmitted from the AFL-TM,
then converts it back to low level audio signals. These signals can feed AA-30, AA-100, AA-120 and XPIQ amplifiers, as
well as the next daisy-chained AFL-TM.
In the following document, the term AFL-Tx refers to the AFL-TS and the AFL-TM. The term AFL-Rx refers to the AFL-RM and
the AFL-RS.
Connections and Indicators
Figure 1 illustrates the Audio Fiber Link connections.
Figure 1 AFL-Tx and AFL-Rx Connections
Audio Fiber Links
AFL-TS, AFL-RS, AFL-TM, AFL-RM
Product Installation Document
P/N 52230 Rev A 3/26/04 ECN 03-717
NOTIFIER is a company.
12 Clintonville Rd., Northford, CT 06472-1653 USA
203-484-7161 • Fax [phone]
www.notifier.com
AFLTS.wmf AFLRS.wmf
AFL-Tx connections.
(AFL-TS is shown)
AFL-Rx connections.
(AFL-RS is shown)
Green power indicator.
Lights when power is ON.
+24VDC
GND (ground)
-Low-level audio IN
Shield
+ Low-level audio IN
Fiber Connection
+24VDC
GND (ground)
- Low-level audio OUT
Shield
+Low-level audio OUT
Fiber Connection
Power and Optical Level
Indicator.
Lights when power is ON.
Green when proper levels
are present.
Red when signals are miss-
ing or at incorrect levels.

2Audio Fiber Link Instructions P/N 52230:A 3/26/04
Connections
+24V - Connect to nonresettable 24 VDC output from a power supply listed for fire protective signaling service.
GND - Ground in reference to 24 VDC. Connect to ground output from the power supply above.
Shield - Connect to shield wire.
- Wire connections for low-level audio.
- Wire connections for low-level audio.
Fiber Connection - ST® Style (ST is a registered trademark of AT&T). Refer to “About the Fiber Optic Cable” on page 4 for
specifications.
Indicators
AFL-Tx - The green indicator lights when power is on, and extinguishes when power is off.
AFL-Rx - The OLI (Optical Level Indicator) lights green when the fiber connection is healthy and the attenuation of the fiber is
within specifications. It lights red when signals are missing or at incorrect levels. It extinguishes when power is off.
Installation
Audio Fiber Link devices come screwed to a clear, non-metallic mounting plate. If it is necessary for the wiring and fiber to exit the
cabinet in another direction, an Audio Fiber Link device may be unscrewed from this plate, rotated 180 degrees, then reattached.
Standoffs and screws necessary for mounting are included.
An Audio Fiber Link may be mounted in a CHS-4 or CHS-4L chassis, which in turn mounts into a CAB-3 or CAB-4 cabinet. Care
must be taken to allow enough room for the fiber optic cable to bend. Additional standoffs are included to enable the “stacking” of
Audio Fiber Link devices. Refer to the following procedures for the proper way to mount these devices.
Notes:
• The metal case of an Audio Fiber Link device must not touch the screws, standoffs or chassis that are connected to the cabinet.
• The AFL-Tx must be located in the same room or enclosure with the devices that are providing the 24V and the audio signal.
• The AFL-Rx must be located in the same room or enclosure with the devices that are providing the 24V and receiving the audio signal.
CHS-4 Mounting
Rear Position
1. Screw two 6-32 x 0.75” standoffs onto PEM studs in the chassis.
2. Screw two 4-40 x 0.37” screws into top holes of board and attach two 4-40 x 0.75” standoffs.
3. Place tab on bottom of board into slot.
1. Screw boards into 6-32 x 0.75” standoffs with two 6-32 x 0.25” screws (refer to Figure 3 for fastening locations). The top
standoffs should rest on the back of the chassis.
Figure 2 CHS-4 Mounting, Rear Position
Tab
6-32 standoff
positions
PEM studs
for standoff
attachment,
(left rear posi-
tion indicated)
Tab slot (rear
left position
indicated)
AFL assembly
Chassis
Mounting
plate
AFL
device
CHS-4
Tab
Side View, Rear Position
AFL mounting
plate
6-32 standoffs 6-32 x 0.25”
screws

3
Audio Fiber Link Instructions P/N 52230:A 3/26/04
Outer Position
2. Slip the AFL mounting plate tab in the top slot of the CHS-4 with the components facing the back of the chassis.
3. Rest the top of the board on the mounting tabs at the top of the CHS-4 and attach using two 4-40 x 0.37” screws.
Figure 3 CHS-4 Mounting
CHS-4L Mounting
Rear Position
1. Attach two 4-40 x 0.75” standoffs to the top two PEM studs of a position in the CHS-4.
2. Slide the AFL mounting plate tab into the rear slot.
3. Use two 4-40 x 0.37” screws to fasten the top of the assembly board to the standoffs.
Figure 4 CHS-4L Mounting, Inner Position
Tab
4-40 screw
positions
6-32 standoff
positions
PEM studs for
standoff attach-
ment, rear left
position Mounting tabs for
outer left position
Tab slot for
rear left position
Tab slot for outer left
position
AFL assembly
Chassis
Mounting
plate
AFL
device
CHS-4
Tab
Side View, Outer Position
(AFL device faces back of
chassis).
AFL mounting
plate
Mounting tab
4-40 x 0.37”
screw
Tab
4-40 x 0.37”
screw positions
Top PEM studs
(right position
indicated)
Rear slot
(right position
indicated)
AFL assembly
CHS-4L Side view, inner position
Chassis
4-40 x 0.75”
standoff AFL mounting
plate
Tab
4-40 x 0.37”
screw
AFL
device
Mounting
plate

4Audio Fiber Link Instructions P/N 52230:A 3/26/04
Stacked
1. Attach two 4-40 x 0.75” standoffs to the PEM studs on the top row of the chassis.
2. Attach two 4-40 x 2” standoffs to the bottom of the rear AFL assembly plate using two 4-40 KEPs.
3. Slide rear AFL mounting plate into rear slot.
4. Attach rear AFL mounting plate by fastening two 4-40 x 2” standoffs to the 4-40 x 0.75” standoffs.
5. Stack the front AFL mounting plate by placing it on top of the four 4-40 x 2” standoffs, then fastening with four 4-40 x
0.37” screws.
Figure 5 CHS-4 Mounting, Stacked
About the Fiber Optic Cable
The attenuation of fiber optic cabling between the AFL-Tx and AFL-Rx must not exceed a 10 dB limit. At the system
design stage apply the following steps to establish the limit:
1. Find the maximum dB loss per foot within the cable manufacturer’s specifications. Determine the total attenu-
ation between the two nodes/repeaters due to the cable.
Loss = (loss/feet) x (length in feet)
2. Establish the dB loss for each connector and splice. Sum all the losses.
3. Add the attenuation factors obtained in steps one and two for a total. This will provide an approximate attenuation total.
The actual attenuation can be measured end-to-end with standard fiber optic test equipment using a signal wavelength
of 850 nanometers for multi-mode, or 1300 nanometers for single-mode.
The following are supported by Audio Fiber Links:
• Connectors: ST® Style (ST is a registered trademark of AT&T).
• Fiber type multi-mode for AFL-TM and AFL-RM
Core Size: 62.5/125 micrometers
Wavelength : 850 nanometers
• Fiber type single-mode for AFL-TS and AFL-RS
Core Size: 9/125 micrometers
Wavelength: 1300 nanometers
• Maximum attenuation of fiber optic link between AFL-Tx and AFL-Rx can not exceed 10 dB.
Applications
Audio Fiber Links may be used in systems where:
• the use of wire media is not possible due to security requirements
• fiber optic cable is already installed and available for low-level audio distribution
• significant distances between AMG-1/AMG-E and remote amplifier cabinets dictate the use of fiber
• high intensity electromagnetic fields of audible frequencies could be coupled to wire type low-level audio loop
• both distance and physical location of remote cabinets require the use of star topology.
Ta b
4-40 x 2” standoff positions for
rear AFL assembly.
4-40 x 0.37” screw positons
for stacked AFL assembly
Chassis
4-40 x 0.75”
standoff
Ta b s
4-40 x 0.37”
screw
4-40 x 2” standoffs
4-40 x 0.37”
screw
AFL mounting
plates
Side view, stacked
AFL
device
AFL
device
Top PEM studs
(right position
indicated)
Rear slot
(right position
indicated)
CHS-4L
4-40
KEP
Mounting
plate
AFL assembly

5
Audio Fiber Link Instructions P/N 52230:A 3/26/04
A maximum of ten amplifiers may be fed from the AFL-Rx output and a maximum of ten daisy-chained AFL-Tx’s may be fed by
single AFL-Rx’s. The maximum series connection of audio fiber links is two AFL-Tx/Rx pairs deep. That is, an amplifier must
not have more than two segments of fiber between itself and the AMG-1/AMG-E.
Notes:
• To ensure a particular AFL-Rx/Tx connection is functioning, observe the LED on the AFL-Rx. Green indicates this trans-
mitter to receiver fiber connections are functioning properly. Red indicates there is a problem with the fiber or the fiber
connections, or the fiber attenuation is too high.
• There is no need for gain adjustment between an AFL-Rx and AFL-Tx. Gain adjustment must be made at the amplifier,
as indicated by the amplifier manual.
• A loss of signal in the AMG-1/AMG-E or from the AMG-1/AMG-E to the AFL-Tx will not be indicated by the LED on the
AFL-Tx or AFL-Rx. The LED on the AFL-Rx indicates power as well as fiber signal status.
• A system requiring many fiber links may also require larger batteries and external chargers. The AFL-Rx current con-
sumption is 120 mA. The AFL-Tx current consumption is 130 mA. All operate from 20.4 to 27.6 VDC. Refer to fire panel
instructions for battery calculations.
• AFL-Tx should be powered by the 24 VDC UL listed power supply connected to the same reference (battery negative) as
the audio signal source.
• Class A low-level audio riser can not be implemented when using audio fiber link.
• Any combination of up to 50 AFL-Tx transmitters and AA-30, AA-100, and AA-120 series amplifiers may be connected to the
output of any one AMG-1/AMG-E. All of the AFL-Tx transmitters must remain in the same cabinet as the AMG-1/AMG-E.
The illustration below shows a typical installation.
Figure 6 Application Example
AFL-Tx AFL-Tx AFL-TxAFL-Rx
Fiber optic
cable to another
AFL-Rx in a
remote cabinet Fiber optic
cable to another
AFL-Rx in a
remote cabinet
Remote amplifier cabinet Main control panel cabinet
AA-100/AA-100E
or
AA-120/AA-120E
AA-100/AA-100E
or
AA-120/AA-120E
AA-100/AA-100E
or
AA-120/AA-120E
AMG-1
AA-30/AA-30E
AA-30/AA-30E
MPS-24A
or
MPS-24AE
MPS-24A
or
MPS-24AE
Origin of main audio riser
AFLappexample.wmf
Fiber
optic
cable

6Audio Fiber Link Instructions P/N 52230:A 3/26/04
Figure 7 AFL-Tx Connections to the AMG-1/AMG-E
Figure 8 Connecting the AFL-Rx to Amplifiers and Second Stage AFL-Tx’s
AMG-1
AMG-E
Low-Level Audio
Optional Return
To 24V non-resettable UL listed
power supply output connected to the
same reference (battery negative) as
the audio source (AMG-1, AMG-E).
Up to a total of 50
AFL-Tx transmitters
or amplifiers
Fiber to
AFL-Rx
Fiber to
AFL-Rx
AFLmswire.wmf
AFLmswire2.wmf
Fiber from
the first stage
AFL-Tx
AFL-Rx Second stage
AFL-Tx
To 24V non-reset-
table UL listed
power supply out-
put connected to
the same refer-
ence as the audio
source. (In this fig-
ure, the AFL-Rx is
the audio source.)
Second
stage fiber
optic link
AA-100/AA-120
AA-30
P3 P3
Up to a
total of 10
amplifiers/
AFL-Tx’s