SR2 Technical Manual EN
Indice : C
25/03/2019
Firmware v2.9
25 / 31
ERECA SAS - 75 rue d'Orgemont, 95210 St Gratien France
T : +33 1 39 89 76 23 W : www.ereca.fr
3.2.3.3
Optical power measurement
Particular care have been done on optical power display for advanced users. As the Trunks are based on
QSFP standard with 4 wavelength only the lowest power is displayed at first. At hover of the mouse the four
optical powers are displayed to help trouble shooting of unequal losses on the fiber.
Each figure is displayed in different colours if the alarm threshold is reached:
•
Green, when optical power is above -10dBm,
•
Orange, when optical power is between -10dBm to -13dBm,
•
Red, when optical power below -13dBm.
The optical level below -10dBm warns the user against a too high fibre attenuation or a dirty connection, it
does not mean that the signal will be lost but that a connector cleaning or fibre trouble shoot has to be done
as soon as possible.
Note1: When optical power received is much too low 2 (< -40 dBm) white dashes (“--”) are displayed.
Note2: The optical thresholds are fixed and apply for T4LR trunks. In a future FW revision they will adapt
automatically if a trunk is equipped with T4ER (receiver with +6 dB more sensitivity).
3.2.4 Signal type summary
The port configuration option allows you to set a name for each port, the direction, its standard and some
other specific options.
Here is a summary of all possibilities depending on signal type
Signal
Type
GPIO
Analog
audio
Serial
IP
AES
MADI
In
MADI
Out
Genlock
SDI
(top & middle row)
SDI 12G
(bottom row)
Port
Direction
In &
Out.
In &
Out.
In &
Out.
In &
Out.
Bidi
In
Out
In
or
Out
In
or
Out
In
or
Out
Standard
available
RS422
RS232
RS485
10 Mbs
100Mbs
Gigabit
(Autosense)
AES
48Khz
MADI
64ch
48Khz
MADI
64ch
48Khz
Composite
Bilevel
Trilvel (Auto
sense)
SD
*ASI
HD
3G
SD
HD
3G
6G
12G
Option
Peer to Peer
Chained
Switch between
AES3/4 or MADI In+Out
By setting the standard, the bandwidth is allocated in advance. Therefore, a port set up in 3G can accept
any signal of lower bandwidth like HD or SD, but not above (eg. 6G or 12G). The same way a port set to
12G can accept any signal with lower bandwidth. The bandwidth constraint is done on the inputs signal only
any output can accept a datarate up to its theoretical maximum.
Note: * Asi signals can be routed on the 3G ports only. This feature is already implemented but cannot be
used in the actual Firmware.
