evertz 7700 Series User manual

7700 MultiFrame Manual
7705AR Fiber Audio Receiver
Revision 1.4.2
TABLE OF CONTENTS
1. OVERVIEW.......................................................................................................................................... 1
2. INSTALLATION................................................................................................................................... 4
2.1. AES AUDIO AND RS-232/422 SERIAL PORT CONNECTIONS................................................ 4
2.2. OPTICAL CONNECTIONS......................................................................................................... 5
2.3. CARE AND HANDLING OF OPTICAL FIBER............................................................................ 6
3. SPECIFICATIONS............................................................................................................................... 7
3.1. OPTICAL INPUT......................................................................................................................... 7
3.2. AES AUDIO OUTPUTS .............................................................................................................. 7
3.3. DATA OUTPUT (7705AR AND 7705AR-2 ONLY)....................................................................... 7
3.4. LTC OUTPUT (7705AR AND 7705AR-2 ONLY).......................................................................... 7
3.5. AUDIO MONITORING OUTPUT:................................................................................................ 7
3.6. SYSTEM PERFORMANCE ........................................................................................................ 7
3.7. ELECTRICAL ............................................................................................................................. 8
3.8. PHYSICAL.................................................................................................................................. 8
4. STATUS LEDS.................................................................................................................................... 9
4.1. MODULE STATUS LEDS........................................................................................................... 9
4.2. AUDIO CHANNEL MONITOR LEDS.......................................................................................... 9
4.3. AES CHANNEL PRESENT LEDS.............................................................................................. 9
5. JUMPERS AND USER ADJUSTMENTS.......................................................................................... 10
5.1. SELECTING WHETHER LOCAL FAULTS WILL BE MONITORED
BY THE GLOBAL FRAME STATUS ........................................................................................ 10
5.2. SELECTING THE DATA COMMUNICATIONS STANDARD (RS-232 OR RS-422)................. 10
5.3. MONITORING THE AES AUDIO.............................................................................................. 10

7700 MultiFrame Manual
7705AR Fiber Audio Receiver
Revision 1.4.2
Figures
Figure 1-1: 7705AR Block Diagram......................................................................................................................2
Figure 1-2: 7705AR-2 Block Diagram...................................................................................................................2
Figure 1-3: 7705AR-8 Block Diagram...................................................................................................................3
Figure 2-1: 7705AR Rear Panels..........................................................................................................................4
Figure 5-1: Jumper Locations .............................................................................................................................10
Tables
Table 2-1: DB25 Pin Connections.........................................................................................................................5

7700 MultiFrame Manual
7705AR Fiber Audio Receiver
Revision 1.4.2
REVISION HISTORY
REVISION DESCRIPTION DATE
1.0 First Release Mar 01
1.1 Added information for 7702AR-2 and 7705AR-LTC-2 versions July 01
1.2 Added information for 7705AR-LTC versions Aug 01
Corrected pinout of DB25 on 7705AR version
1.2.1 Corrected LED descriptions Aug 01
1.3 LTC Output included in all units Oct 01
1.4 Added information for 7705AR-8 version Jul 02
1.4.1 Corrected LTC Out in Table 1 and updated laser warnings Aug 05
1.4.2 Fixed typos and formatting Nov 08
Information contained in this manual is believed to be accurate and reliable. However, Evertz assumes no responsibility for the use thereof nor for
the rights of third parties, which may be effected in any way by the use thereof. Any representations in this document concerning performance of
Evertz products are for informational use only and are not warranties of future performance, either express or implied. The only warranty offered by
Evertz in relation to this product is the Evertz standard limited warranty, stated in the sales contract or order confirmation form.
Although every attempt has been made to accurately describe the features, installation and operation of this product in this manual, no warranty is
granted nor liability assumed in relation to any errors or omissions unless specifically undertaken in the Evertz sales contract or order confirmation.
Information contained in this manual is periodically updated and changes will be incorporated into subsequent editions. If you encounter an error,
please notify Evertz Customer Service department. Evertz reserves the right, without notice or liability, to make changes in equipment design or
specifications.

7700 MultiFrame Manual
7705AR Fiber Audio Receiver
Revision 1.4.2
WARNING
Never look directly into an optical fiber. Non-reversible damage to the eye can
occur in a matter of milliseconds.

7700 MultiFrame Manual
7705AR Fiber Audio Receiver
Revision 1.4.2 7705AR-1
1. OVERVIEW
The 7705AR series AES Audio Receiver Demultiplexors and 7705AT series AES Audio Transmitter
Multiplexors provide an economical method of transmitting up to six AES audio signals (twelve mono), one
RS-232/422 control signal, and Linear Time Code (LTC) or eight AES audio signals (sixteen mono) using
a single wavelength on a fiber optic cable, with minimum latency. AES audio reclocking is provided on the
7705AR for jitter reduction. The 7705AR series modules are available in 3 different versions to meet a
variety of applications. Two versions have six single-ended AES audio outputs, an LTC output and one
uni-directional RS-232/422 output while the third has eight single-ended AES audio outputs.
AES Audio Outputs
Model Number Connector LTC Output RS232/422 Slots
7705AR 6 DB 25 1 1 1
7705AR-2 6 BNC 1 1 2
7705AR-8 8 DB 25 --- --- 1
Features:
•Six channel versions have six single-ended AES audio outputs with one balanced linear time code
output and uni-directional RS-232/422 data output
•Eight channel version has eight single-ended AES audio outputs
•Supports SMPTE compliant AES audio signals with 48KHz or 96KHz sampling rate
•Low channel latency for 7705AT/AR pair
•Provides reclocking on AES outputs
•Monitoring of AES audio via stereo head phone jack and pushbutton channel selector at card edge
•Supports multi-mode or single-mode fiber
•Fully hot-swappable from front of frame with no fiber or data channel disconnect required
•SC/PC, ST/PC or FC/PC connector options
•Card edge LEDS indicate module health, valid link, data error, AES channels present
•Tally output on Frame Status bus upon loss of input signal

7700 MultiFrame Manual
7705AR Fiber Audio Receiver
7705AR-2 Revision 1.4.2
Optical
Receiver
Signal
Present
Control Unit
Receiver
Fault Pushbutton
AES
Driver
AES
Reclocker
DeMux
6 6
6
Optical
Input
DB25
RS-232
RS-422
Driver
Monitoring
Head Phone
Jack
LTC
Driver
1 RS-232/422 Output
LTC Output
6 AES Outputs
Figure 1-1: 7705AR Block Diagram
Optical
Receiver
Signal
Present
Control Unit
Receiver
Fault Pushbutton
AES
Driver
AES
Reclocker
DeMux
6 6
6
Optical
Input
DB25
RS-232
RS-422
Driver
Monitoring
Head Phone
Jack
6 AES
Output
BNC
LTC
Driver 1 RS-232/422 Output
LTC Output
Figure 1-2: 7705AR-2 Block Diagram

7700 MultiFrame Manual
7705AR Fiber Audio Receiver
Revision 1.4.2 7705AR-3
Optical
Receiver
Signal
Present
Control Unit
Fault Pushbutton
AES
Driver
AES
Reclocker
DeMux
8 8
8
Optical
Input
DB25
8 AES Outputs
Monitoring
Head Phone
Jack
Receiver
Figure 1-3: 7705AR-8 Block Diagram

7700 MultiFrame Manual
7705AR Fiber Audio Receiver
7705AR-4 Revision 1.4.2
2. INSTALLATION
The one slot 7705AR and 7705AR-8 versions come with a companion rear plate that has a 25 pin female
D connector and one SC/PC (shown), ST/PC or FC/PC optical connector. The two slot 7705AR-2 version
also has 6 BNC connectors for the audio. For information on mounting the rear plate and inserting the
module into the frame see section 3 of the 7700FR chapter.
Figure 2-1: 7705AR Rear Panels
2.1. AES AUDIO AND RS-232/422 SERIAL PORT CONNECTIONS
The specific connector configuration depends on the version of the module that you have.
AES OUT: On the 7705AR-2 there are 6 BNC connectors for connection of 6 unbalanced AES
channels. On the 7705AR-8 there is a 25 Pin D connector for connection of 8 unbalanced
AES channels. Table 2-1 shows the pin definitions of the AES OUT connector.
AES/DATA/LTC OUT: On the 7705AR there is a 25 Pin D connector for connection of 6 unbalanced AES
channels, 1 RS-232/RS-422 data channel, and one differential time code channel. The
serial port portion of the connector consists of 2 out pins and 1 ground pin. The SEL 4
jumper located at the rear of the module determines whether the port will be operated as a
balanced RS422 Transmit channel, or one RS-232 Transmit channel (See section 5.2 for
location of the SEL jumper).

7700 MultiFrame Manual
7705AR Fiber Audio Receiver
Revision 1.4.2 7705AR-5
Table 2-1 shows the pin definitions for each version of the modules.
DATA/LTC OUT: On the 7705AR-2 there is a 25 Pin D connector for connection of one RS-232/RS-422
data channel, and one differential time code channel. The serial port portion of the
connector consists of 2 output pins and 1 ground pin. The SEL 4 jumper located at the rear
of the module determines whether the port will be operated as a balanced RS-422 Transmit
channel, or one RS-232 Transmit channel (See section 5.2 for location of the SEL jumper).
Table 2-1 shows the pin definitions for each version of the modules.
Model
Pin # 7705AR 7705AR-8 7705AR-2
Sel 4 RS232 RS422 RS232 RS422 RS232 RS422
1 Ground Ground Ground Ground Ground Ground
2 --- Tx + Out AES Out 7 AES Out 7 --- Tx + Out
3 Tx Out Tx – Out AES Out 8 AES Out 8 Tx Out Tx – Out
4 LTC + Out LTC + Out --- --- LTC + Out LTC + Out
5 AES Out 5 AES Out 5 AES Out 5 AES Out 5 --- ---
6 AES Out 6 AES Out 6 AES Out 6 AES Out 6 --- ---
7 Ground Ground Ground Ground Ground Ground
8 AES Out 3 AES Out 3 AES Out 3 AES Out 3 --- ---
9 AES Out 4 AES Out 4 AES Out 4 AES Out 4 --- ---
10 Ground Ground Ground Ground Ground Ground
11 AES Out 1 AES Out 1 AES Out 1 AES Out 1 --- ---
12 AES Out 2 AES Out 2 AES Out 2 AES Out 2 --- ---
13 Ground Ground Ground Ground Ground Ground
14 --- --- --- --- --- ---
15 --- --- --- --- --- ---
16 LTC - Out LTC - Out --- --- LTC - Out LTC - Out
17 --- --- --- --- --- ---
18 --- --- --- --- --- ---
19 Ground Ground Ground Ground Ground Ground
20 --- --- --- --- --- ---
21 --- --- --- --- --- ---
22 Ground Ground Ground Ground Ground Ground
23 --- --- --- --- --- ---
24 --- --- --- --- --- ---
25 Ground Ground Ground Ground Ground Ground
Table 2-1: DB25 Pin Connections
2.2. OPTICAL CONNECTIONS
FIBER IN: There is one SC/PC (shown), ST/PC or FC/PC female connector with the optical input to
the 7705AR as shown in section 3.1. This connector should be connected to the FIBER
OUT connector of a 7705AT module at the origination end with a suitable fiber optic cable.
This wide band optical input accepts optical wavelengths of 1270nm to 1610nm,
accommodating standard or CWDM transmission schemes. This input is compatible with
multimode fiber when connected directly to a companion 7705AT card.

7700 MultiFrame Manual
7705AR Fiber Audio Receiver
7705AR-6 Revision 1.4.2
2.3. CARE AND HANDLING OF OPTICAL FIBER
"
Never touch the end face of an optical fiber. Always keep dust caps on optical fiber
connectors when not connected and always remember to properly clean the optical
end face of a connector before making a connection.
The transmission characteristics of the fiber are dependent on the shape of the optical core and therefore
care must be taken to prevent fiber damage due to heavy objects or abrupt fiber bending. Evertz
recommends that you maintain a minimum bending radius of 5 cm to avoid fiber-bending loss that will
decrease the maximum attainable distance of the fiber cable. The Evertz fiber optic modules come with
cable lockout devices, to prevent the user from damaging the fiber by installing a module into a slot in the
frame that does not have a suitable I/O module. For further information about care and handling of fiber
optic cable see section 3 of the Fiber Optics System Design chapter in the front of the binder.

7700 MultiFrame Manual
7705AR Fiber Audio Receiver
Revision 1.4.2 7705AR-7
3. SPECIFICATIONS
3.1. OPTICAL INPUT
Connector: SC/PC, ST/PC or FC/PC female housing
Input Optical Sensitivity: -27 dBm
Maximum Input Power: 0 dBm
Wavelength 1310 nm to 1610 nm
Fiber Size: 62 µm core / 125 µm overall
3.2. AES AUDIO OUTPUTS
Number of Outputs:
7705AR 6
7705AR-2 6
7705AR-8 8
Standard: SMPTE 276M, single ended synchronous or asynchronous AES
Signal Level: 1V p-p ±0.1V
Connector:
7705AR: Female DB-25
7705AR-2: 6 BNC per IEC 61169-8 Annex A
7705AR-8: Female DB-25
Sampling Rate: 48KHz or 96KHz
Impedance: 75 Ohms unbalanced
3.3. DATA OUTPUT (7705AR and 7705AR-2 ONLY)
Number of Ports: 1 uni-directional RS 232 or RS 422 – jumper selectable
Connector: Female DB-25
Baud Rate: Determined by incoming data up to 3 Mbaud
3.4. LTC OUTPUT (7705AR and 7705AR-2 ONLY)
Standard: SMPTE 12M
Connector: Female DB-25
Level: 1V p-p nominal
Rise/Fall Time: 40 ±10 µsec
Impedance: 110 ohm balanced
3.5. AUDIO MONITORING OUTPUT:
Connector: 3.5mm female audio jack
Channel Select: pushbutton select with LED indicator
Audio Level: user adjustable with card edge potentiometer
3.6. SYSTEM PERFORMANCE
Input to Output Latency: < 1µs

7700 MultiFrame Manual
7705AR Fiber Audio Receiver
7705AR-8 Revision 1.4.2
3.7. ELECTRICAL
Voltage: + 12VDC
Power: 6 Watts.
EMI/RFI: Complies with FCC regulations for class A devices.
Complies with EU EMC directive.
3.8. PHYSICAL
7700 frame mounting:
Number of slots:
7705AR: 1
7705AR-2: 2
7705AR-8: 1
7701 frame mounting: 1 slot (all versions)

7700 MultiFrame Manual
7705AR Fiber Audio Receiver
Revision 1.4.2 7705AR-9
4. STATUS LEDS
4.1. MODULE STATUS LEDS
LOCAL FAULT (LD1): This Red LED will be On when there is insufficient optical input power or when
there is a fault in the module power supply. When the FRAME STATUS jumper
is set to the ON position the FRAME STATUS bus will also be asserted. (See
section 5.1)
MODULE OK (LD6): This Green LED will be On when the module is operating properly.
LINK (LD3): This Amber LED will be On when there is a valid link established with a 7705AT
at the origination end.
DATA ERROR (LD4): This Red LED will be On when there is invalid data received by the optical
receiver.
4.2. AUDIO CHANNEL MONITOR LEDS
Six LEDs (eight on the 7705AT-8) located on the lower end of the module (opposite the headphone jack)
indicate which AES channel is currently being monitored on the analog monitoring headphone jack. AES
LED 1 is located closest to the center of the module. See section 5.3 for information about operating the
audio monitor.
4.3. AES CHANNEL PRESENT LEDS
Six LEDs (eight on the 7705AT-8) located on the upper end of the module (opposite the 4 module status
LEDS) indicate which AES channels are present on the incoming optical signal and are currently being
output to the AES outputs. The AES 1 PRESENT LED is located closest to the top of the module.

7700 MultiFrame Manual
7705AR Fiber Audio Receiver
7705AR-10 Revision 1.4.2
5. JUMPERS AND USER ADJUSTMENTS
LOCAL FAULT
EVERTZ
(A) 7705DT SFF POWER
FRAME STATUS
+12V
GND
SEL 4
RS232 RS422
ON
OFF
J1
MODULE OK
LEVEL
CHANNEL
SELECT
MONITOR
LINK
DATA ERROR
Figure 5-1: Jumper Locations
5.1. SELECTING WHETHER LOCAL FAULTS WILL BE MONITORED
BY THE GLOBAL FRAME STATUS
The FRAME STATUS jumper J1 located at the front of the module determines whether local faults (as
shown by the Local Fault indicator) will be connected to the 7700FR frame's global status bus.
FRAME STATUS: To monitor faults on this module with the frame status indicators (on the Power
Supply FRAME STATUS LED's and on the Frame's Fault Tally output) install this jumper in the
On position. (default)
When this jumper is installed in the Off position local faults on this module will not be
monitored.
5.2. SELECTING THE DATA COMMUNICATIONS STANDARD (RS-232 OR RS-422)
Jumper SEL 4 located at the rear of the module is used to configure whether the data port will operate in
the RS-232 or RS-422 standard. The data port on the 25 pin D connector consists of a pair of outputs and
a ground as shown in Table 2-1.
SEL 4: To set the port outputs to operate in the RS-232 standard install the jumper in the RS-232
position.
To set the port outputs to operate in the RS-422 standard install the jumper in the RS-422
position.
5.3. MONITORING THE AES AUDIO
A stereo headphone jack located at the front of the module is used to monitor the individual AES channels.
Six LEDs (eight on 7705AR-8) located on the bottom of the module opposite the headphone jack indicate
the AES channel currently being monitored. The AES1 LED is closest to the center of the card. When the
module powers up the audio monitor jack is turned off. Press the pushbutton to select AES1 channel pair
for monitoring. The AES LED will come on. The monitoring volume level can be adjusted by turning the
level potentiometer located beside the headphone jack. Press the pushbutton one or more times to
monitor other AES channels. The appropriate LED will come on indicating which AES channel is currently
being monitored.