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D-422-MG  

Rev. 

 

 

 4 

 
1

 

General 

 
 

 

Figure 1 D-422-MG Block diagram 

 
The flashlink D-422-MG module provides an economical solution for transmitting RS-422 
and GPI data signals via fiber optic cable. A pair of D-422-MG allows bi-directional 
transmission of up to 8 RS-422 and 16 GPI data lines for distances over 60km. When 
access to fiber is limited, D-422-MG can be combined with the flashlink optical 
multiplexing WDM, CWDM or DWDM products. 
The D-422-MG module multiplexes up to 8 RS-422 and 16 GPI inputs into an outgoing 
datastream while at the same time demultiplexing an incoming datastream into 8 RS-422 
and 16 GPI outputs. The outgoing multiplexed stream is available both as an optical 
signal and as an electrical signal for use with a flashlink multichannel DWDM system. 
As stand alone unit, the D-422-MG module utilises 2 fiber strands for bi-directional data 
transport. Using either 2 fiber strands or optical multiplexing technology guarantees 
minimum possible latency for applications where timing is crucial. The D-422-MG module 
is supplied together with the D-422-MG-C1 connector module. The optical output is 
made with a Fabry-Perot laser diode for 1310±40nm or a DFB laser for 1550±40nm and 
the CWDM wavelengths according to ITU-T G.694 from 1470±6nm up to 1610±6nm. 
 

The product is available in 19 versions: 

D-422-MG-13T -7.5dBm 

1310±40nm -7.5 dBm F-P laser 

D-422-MG-13T 0 dBm 

1310±40nm 0 dBm F-P laser 

D-422-MG-15T 0 dBm 

1550±40nm 0 dBm DFB laser 

Summary of Contents for D-422-MG

Page 1: ...D 422 MG RS 422 Multiplexer with GPI I O User Manual Rev 0...

Page 2: ...always available in pdf format on our web site http www network electronics com Current revision of this document is the uppermost in the table below Revision Replaces Date Sign Change Description 0...

Page 3: ...output 7 3 CONNECTOR MODULE 8 3 1 D 422 MG C1 8 3 2 Mounting the connector modules 8 3 3 RS 422 Connector Pin Assignments 9 3 4 GPI Input Connector Pin Assignments 9 3 5 GPI Output Connector Pin Assi...

Page 4: ...utgoing multiplexed stream is available both as an optical signal and as an electrical signal for use with a flashlink multichannel DWDM system As stand alone unit the D 422 MG module utilises 2 fiber...

Page 5: ...MG C1570 1570 6nm 0dBm DFB laser D 422 MG C1590 1590 6nm 0dBm DFB laser D 422 MG C1610 1610 6nm 0dBm DFB laser D 422 MG C1270 1270 6nm 0dBm DFB laser D 422 MG C1290 1290 6nm 0dBm DFB laser D 422 MG C1...

Page 6: ...fiber Additional latency 5 s km of fiber 2 2 Inputs 2 2 1 RS 422 Signal format RS 422 Connector RJ 45 Bit Rate DC up to 115 2 kbps 2 2 2 GPI Connector DSUB 25 Signal type Internal pull up to 5V 2 2 3...

Page 7: ...aser Optical wavelength ver 13T 1310nm 40nm Optical power 7 5 dBm Optical power option 0 dBm Optical wavelength ver 15T 1550nm 40nm Optical power 0 dBm Optical wavelength ver C1nn0 1270 1290 1310 1330...

Page 8: ...o RS 422 E1 on each of the D 422 modules The two modules are connected to the fibres with one fiber from TX on module 1 to RX on module 2 and from RX on module 1 to TX on module 2 The TX UPG connector...

Page 9: ...lave device and controller one end of the active device must use a crossed cable The table below takes the crossing on the slave side into consideration RS 422 pin layout Signal Name Port1 Port2 DB9 V...

Page 10: ...lector type An output can switch a maximum load of 100mA at 30V Any device to be controlled by the GPI outputs lamp LED or similar needs to be connected to an external supply voltage on one end and to...

Page 11: ...have alarms on each of the 16 GPI inputs as well as the 16 GPI outputs Only the GPI inputs have alarms attached to them by default Also the same firmware version enables control of the GPI outputs so...

Page 12: ...pp 1 sec The laser is turned off Module is faulty fuse blown etc Module self test is OK and power is present Module has no power Loss of signal No optical input signal check fibre connection and card...

Page 13: ...REFUL WHEN CONNECTING DISCONNECTING FIBER PIGTAILS ENDS NEVER LOOK DIRECTLY INTO THE PIGTAIL OF THE LASER FIBER NEVER USE MICROSCOPES MAGNIFYING GLASSES OR EYE LOUPES TO LOOK INTO A FIBER END USE LASE...

Page 14: ...hlink equipment The equipment will meet the guaranteed performance specification under the following environmental conditions Operating room temperature range 0 C to 50 C Operating relative humidity r...

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