MILITARY & DEFENCE APPLICAT
ARMED AN Selection crite
ND DATA REA eria for today’s militar
The need for ever-higher performance data is accelerating changes in connector des particularly those for the military. Nick man aging director at ODU UK, looks at developments in MIL-STD connectors
I f n the macro military industry, faster, lighter and more reliable in li bl i
batt lefield end-users rightly demand t echnologies and equipment that are increasingly powerful but smaller, li h d
ext reme conditions. So, honing in on the micro, the equipment manufacturers want to meet t his demand through improvements in military connectors:
reduced weight , increased robustness and simpler handling all in a smaller space- envelope.
Unfortunately, generic connectors, such as those for USB, Firewire and RJ45, do not assure the rugged quality required for an intense military environment.
Furthermore, responses to this have failed to address the issue, such as re-packaging the insert inside a MIL-STD connector.
Push-pull connectors do not require the additional ‘finger-space’ between
connectors needed by traditional MIL-STD y traditional MIL screw or bayonet connectors, so the overall
space-envelope can usually be reduced by about one-third. Apart from the space- saving, what guarantees a high-speed connection? Above all, it’s in the detail. Weight is a prime factor for most
battlefield-use equipment. So, if the end device must be lightweight, naturally, the weight reduction starts with the connector. For example, using aluminium reduces the weight of the housing. When combined with a special, low-reflection surface, the connector is ideally suited for battlefield use.
The choice of the insulation body material demands special attention, needing to withstand the harsh
environmental conditions whilst coping with sensitive high-frequency parameters.
/ ELECTRONIC CS DATA RATES
Data processing requires high-speed in military scenarios. with signal integri
connectors are current these expectations data protocols me 14.4 Gbit/s.
The key to this s contact arrangeme the precise additio
rrently able to meet s with transmission of eeting rates of up to
regions: this enables optimisat the characteristic
success lies in skilled ent and design, with on of compensation les optimisation of
achieve an acceptable return loss. Further issues with crosstalk in t data stream are ad targeted field cont 6a quality to be ac
impedance, so as to able return loss.
ith crosstalk in the
ddressed by the use of trol. This allows CAT chieved without the
necessity of adding an expensive internal shield plate.
EXTERNAL SHIEL LDING
On the issue of interference, t implementation of shielding is import intrusive penetrat data transmission
terference, the f 360 degree EMC tant as it blocks any ion of the signal and .
equires high-speed in . Combining ruggedness ty, ODU’s current bl
onnectors e in pro
k Harpe t recent
ocessing sign, er,
External shielding, robust material and space-envel a quality fin reliable con
ielding, robust d a smaller lope ensure nish and a nection
Considering the compact of military technolog radio and GPS, this is quality operation.
The extreme condition circumstances – water, dirt temperature hazards – demand a connector made from st To tackle this, connect
ns of milit ary
r, dirt , salt and – demand a
sturdier material. nector solutions
must be tested in accordance wit standards. ODU offers a solution in t ODU AMC connector series, acceding to the MIL standards whilst an IP68 rating that e
sealed and resistant finish. Meet these demands ensures a connector solution that can cop military operation.
MATING RELIABILITY One final criterion is mat
Firstly, the use of both mechanical and colour coding guarant
reliability as the pin co damaged if the connect misaligned during mating.
Combining these factors, one should and will arrive at a con that can endure its milit
ors, one should
Concluding with this, one can ensure a smooth transition in
more effective system within t For more information on connect and their military app
nnect or solution ilit ary functions. one can ensure nto a simpler and
m within this sector. n on connectors lications, visit:
ELECTRONICS CTRONICS | APRIL 2019 11 aryconnectors.co.uk
ontacts are not ctor shells are ting.
simple handling. In addition, the ‘scoop- proof’ shell design offers addit
mat ing reliability. h mechanical and ees reliable and ddition, the ‘scoop- ers additional
cordance with MIL s a solution in the series, acceding whilst securing nsures a tightly finish. Meeting res a connector pe within strenuous
mpact packaging y, such as in
s critical to ensure
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