Olson Technology MUSCLE-EM55X - Manual (Page 19)

OTOT-EM55X/XL Optical Transmitter Rev. x1 www.olsontech.com
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Figure 12 shows the view on the 8 port mini-DIN connector
Figure 12 — 8-Port Mini DIN Connector
The mini-DIN connector pins are used as described in the following table.
Function in OTOT-EM55X
Pin Number
of mini-DIN
connector
Comments
GND 2 Ground
+5.1V
DC
(±5%)
(voltage under no-load condition)
1
Max. 80mA, protected by a serial
PTC (< 50Ohms) in NEC hardware release 2.1
Fuse (< 6Ohms) from NEC hardware release 2.2
Input / Output No. 0
(from hardware release 2.0 and software
release 2.0 or later).
5
Used for redundancy switching feature (input port) or as alarm out-
put port.
Input / Output No. 1 7 N/A
Input only No. 2 3 N/A
Input only No. 3 8 N/A
Input only No. 4 4 N/A
Input only No. 5 6 N/A
Notes:
• On pin 1, there is a 5.1V
DC
supply voltage available for feeding an external interface box, which could contain
optocouplers or relays etc.; the current sinked from this port should not exceed 80mA.
• In order to not degrade the EMI performance of the OTOT-EM55X, a shielded cable with the shield connected
to pin 2, (GND) of the mini-DIN–connector has to be used.
• I/O #0 is directly related to the transmitter. If the port is used as an output, alarms related to the transmitter can
be accessed on this output. If the port is used as an input it enables easy redundancy switching between two re-
dundant OTOT-EM55X.
EMS / Service Interfaces
NMS Server Interface: Ethernet 10/100Mbps (XL)
The NMS server interface is the main NMS interface of the optical transmitter. It supports HTTP and SNMP protocols.
The NMS server firmware can be downloaded for future software upgrades via the RS232 interface.
Local Setup interface: RS232 (XL)
Connector Sub-D9 male
Configurations 115,200 baud, 8 data, 1 stop, no parity
Interface RS232
Pinning Pin 1, 4, 6, 9: n.c.
Pin 2: RxD
Pin 3: TxD
Pin 7: RTS
Pin 8: CTS
Pin 5: Gnd
The local setup interface can be used to locally setup the NMS server’s parameter, like IP parameters and passwords
by using the tool "NmsSetup.exe". It is also used to download software for the NMS server firmware in case the NMS
server crashes during software updates when reprogramming application flash software over Ethernet.