KENTON LNDR MIDI Line Driver Master & Slave Pair User Manual
- June 17, 2024
- KENTON
Table of Contents
KENTON LNDR MIDI Line Driver Master & Slave Pair
FCC Statement for LNDR
NOTE
This equipment has been tested and found to comply with the limits for a
Class B digital device, under Part 15 of the FCC Rules. These limits are
designed to provide reasonable protection against harmful interference in a
residential installation. This equipment generates, uses and can radiate radio
frequency energy and, if not installed and used by the instructions, may cause
harmful interference to radio communications. However, there is no guarantee
that interference will not occur in a particular installation. If this
equipment does cause harmful interference to radio or television reception,
which can be determined by turning the equipment off and on, the user is
encouraged to try to correct the interference by one or more of the following
measures:
- Reorient or relocate the receiving antenna.
- Increase the separation between the equipment and the receiver.
- Connect the equipment to an outlet on a circuit different from that to which the receiver is connected.
- Consult the dealer or an experienced radio/TV technician for help.
Information on Disposal for Users of WEEE
This symbol on the product and/or accompanying documents means that used electrical and electronic equipment (WEEE) should not be mixed with general household waste. For proper treatment, recovery and recycling, please take this product(s) to designated collection points where it will be accepted free of charge. Alternatively, in some countries, you may be able to return your products to your local retailer upon purchase of an equivalent new product. Disposing of this product correctly will help save valuable resources and prevent any potential negative effects on human health and the environment, which could otherwise arise from inappropriate waste handling. Please contact your local authority for further details of your nearest designated collection point. Penalties may be applicable for incorrect disposal of this waste, by your national legislation.
For disposal in countries outside of the European Union
This symbol is only valid in the European Union (EU). If you wish to discard
this product, please contact your local authorities or dealer and ask for the
correct method of disposal.
Description
The LNDR MIDI line driver is supplied as a pair of units with a MIDI Input and a MIDI Output at both ends to enable you to connect MIDI devices over much greater distances than is usually possible using standard MIDI cables. A MIDI signal applied to the MIDI IN of the master will appear at the MIDI out of the slave. Similarly, a MIDI signal applied to the MIDI IN of the slave will appear at the MIDI out of the master. You can send signals in both directions at the same time. The master and slave units are very similar, however, the master supplies power for both units – the slave unit does not have a power input socket. The LNDR system is powered by a mains adaptor (supplied), so it doesn’t need periodic battery changes to keep it working, enabling you to “fit and forget”.
Connecting
Ensure that the power adaptor is plugged into the master, and the ACTIVE LEDs
on the LNDR master & slave units are both on. Ensure you have a CAT5 cable
connecting the master unit to the slave unit. Connect the MIDI out of your
keyboard or computer to the MIDI IN of the LNDR master and connect the MIDI
OUT of the LNDR slave to the MIDI input of the device you want to control.
Alternatively, connect the MIDI out of your keyboard or computer to the MIDI
IN of the LNDR slave and connect the MIDI OUT of the LNDR master to the MIDI
input of the device you want to control.
If possible use MIDI cables no greater than 5 metres in length for the MIDI INs of the LNDR. The MIDI INs should ideally be driven directly from the signal source, not at the end of a daisy chain of THRUs. If necessary use a thru box such as the THRU-5. Note that the CAT5 cable from an LNDR master should only be connected to an LNDR slave, not to another master, and NEVER to any other device, even if it has a similar connector. (e.g. Ethernet)
CAT5 cable info
You should use good quality CAT5 cable. For distances greater than 100 metres,
you should use CAT5e cable. Ideally use ready-made CAT5 cables which are
available in many lengths, however, if you wish to make your own, the cable
pairs must be connected to the correct pins. It is not sufficient that pin 1
connects to pin 1 (2-2, 3-3 etc.), it is also essential that pin 1 is paired
with 2, 3 with 6, 4 with 5, and 7 with 8. You will find that the twisted pairs
have complementary colours, white/orange with orange/white etc.
Cables should be wired to the EIA-568B standard at both ends. Don’t use crossover cables. You can find out more about CAT5 wiring on the internet. Search for “straight through RJ45”.Although we recommend wiring to the EIA- 568B standard, the CAT5 cable can alternatively be wired to the EIA-568A standard. However, both ends must be wired to the same standard.
Troubleshooting
- Check that you are using a properly wired CAT5 cable – see above.
- Check that you are using a “straight through” cable, not a “crossover” cable.
- Check that the “active” LEDs are lit.
- If you encounter problems at very long distances, it could be the result of a volt-drop in the CAT5 cable, in which case substituting the power supply for a 12 or 15 volt unit type will help.
- Note that we have tested the LNDR system to over 750 metres using the supplied PSU without problems.
Specification
- Power Input 9V to 12V DC (regulated or unregulated)
- Power 85mA, 2.1mm plug (centre positive)
- MIDI 1 x In, 1 x Out on each unit (standard 5-pin DIN connectors)
- Interconnect CAT5 cable required with RJ45 connectors
- Protocols MIDI and RS485 full duplex
- Range 500 metres between master & slave over CAT5e cable
- Weight 110g (each unit, excluding power supply)
- Dimensions 100 x 46 x 32 mm (each unit)
- Power supply Supplied with unit. Specify UK EU or US type when ordering.
Warranty
The LNDR system comes with a 12-month (from purchase date) back-to-base warranty, (i.e. customer must arrange and pay for carriage to and from Kenton Electronics Ltd). In the unlikely event of a problem, contact us by email through our website or by telephone.
Unit 3, Epsom Downs Metro Centre, Waterfield, Tadworth, KT20 5LR, UK
+44 (0)20 8544 9200 www.kenton.co.uk
tech@kenton.co.uk
Version 1v00 e. & o. e. © 22nd December 2023
References
Read User Manual Online (PDF format)
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