Communication protocol

Ethernet

Last spectrometer

2017T043.024

Voltage protection

  • MDC-300: Undervoltage and overvoltage (18V)

  • MDC-301: None

Connector A

RJ-45

Connector B

None (flying leads)

Connector C

Lumberg 0322-08

Dust caps

Lumberg 0381, Lumberg 038199 (no chain) or Lumberg 038799 (plastic)

The MDC-300 communication cable can be used to connect a spectrometer directly to both a computer and a power source. Note that some cables (labelled MDC-300) are equipped with an under- and overvoltage protection circuit. This circuit protects the hardware against voltages which are too high (up to 60V) and against reverse polarity issues. The MDC-301 cable does not have any voltage protection. Aside from the label, the MDC-300 and MDC-301 cables have identical appearance.

Variants

MDC-300

Includes electronics which protect the spectrometer against voltages which are too low (including negative voltages caused by reversed polarity) and voltages which are too high.

MDC-301

Does not include any voltage protection.

Connection scheme

The connection scheme for the MDC-300 cable is shown below. The MDC-301 cable has the same connection scheme, but is lacking the voltage protection circuit. The voltage protection circuit in the cable prevents the power lines from being inspected using a multimeter.

Pin numbering


RJ-45
The RJ-45 connector follows the T-568B standard.

Lumberg 0322-08
Note: Pin numbering as seen from the solder side.

Pin description (Lumberg connector)

#

Description

Wire color

1

Rx+

Orange / white

2

Rx-

Orange

3

Tx+

Green / white

4

Power

Blue

5

Power

Blue / white

6

Tx-

Green

7

Ground

Brown / white

8

Ground

Brown

Datasheets