4.4 Setting compatibility, operating mode and transmitting power
19
4 Setting Up
Version 2.4 04/07
Operating mode ”Redundant optical ring“
CH3 is activated in this operating mode
if S3 and S4 are in Position 1.
CH2 is activated in this operating mode
if S1 and S2 are in Position 1.
Note: This operating mode must always be set at both of
the optical ports of a module.
0
1
S 6
S 7
S 1
S 2
S 4
S 5
S 3
CH 3
CH 2
CH 3
CH 2
S 0
CH 1
4.4.3 Reducing the optical transmitting
power on theOZD Profi 12M P11
and OZD Profi 12M P12
Attention! The following details only apply for the
S7 default position (S7 = 0)!
The OZD Profi 12M P11 and OZD Profi 12M P12 have
a high level of optical transmitting power. Optical over-
loading may result if these modules are connected with
non-OZD Profi devices using plastic optical fiber cables,
particularly if short cable lengths are used.
In this case the optical transmitting power can be
reduced.
The DIL switch
S5
is used to set the transmitting power
of
CH2
.
The DIL switch
S6
is used to set the transmitting power
of
CH3
.
S6 does not have a function on the OZD Profi 12M P11.
Leave S6 in Position 1 (default) if the
optical fiber link to CH3 functions
correctly in this position.
Leave S5 in Position 1 (default) if the
optical fiber link to CH2 functions
correctly in this position.
Switch S6 to Position 0 (reduced)
if overloading is detected at a non-
OZD Profi device when using plastic
optical fiber cables to CH3.
Switch S5 to Position 0 (reduced) if
overloading is detected at a non-OZD
Profi device when using plastic optical
fiber cables to CH2.
0
1
S 6
S 7
S 1
S 2
S 4
S 5
S 3
CH 3
CH 2
CH 3
CH 2
S 0
CH 1
0
1
S 6
S 7
S 1
S 0
S 2
S 4
S 5
S 3
CH 3
CH 2
CH 3
CH 1
CH 2
Note:
The DIL switches S5 and S6 on the OZD Profi 12M … for
glass optical fiber cables do not have a function (the
optical transmitting power cannot be reduced).
The transmitting power default setting (S5 or S6 in
Position 1) must be set when using PCF fibers.