MNV-K: Difference between revisions
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The MNV-K is an original Russian monocular night vision housing made to accomodate the equally Russian | The MNV-K is an original Russian monocular night vision housing made to accomodate the equally Russian EPM-103 series IIT (usually manufactured by Russian company Katod) with its housing specific obejctive and eyepiece. | ||
== Design and function == | == Design and function == | ||
There are several variants of the MNV-K but the features common to all of them are -among others- onboard IR LED illumination, battery compartment opens at the rear end of the device and the power switch is located on the front. | There are several variants of the MNV-K but the features common to all of them are -among others- onboard IR LED illumination, battery compartment opens at the rear end of the device and the power switch is located on the front. | ||
The MNV-K is usually fitted with both a mini-rail and a threaded port for attaching a standard Norotos | The MNV-K is usually fitted with both a mini-rail and a threaded port for attaching a standard Norotos style j-arm, other monocular arms or a dual bridges. | ||
The eyepiece is | The eyepiece is threaded but in a different size from US mil-spec ones. | ||
MNV-K devices are powered using a single 3V CR123 and are not compatible with higher voltage such as rechargable Li-ion 3.7V CR123R. | MNV-K devices are powered using a single 3V CR123 and are not compatible with higher voltage such as rechargable Li-ion 3.7V CR123R. | ||
Its variations include features as stowed-position ON/OFF (selectable from the power switch), manual or fixed gain and | Its variations include features as stowed-position ON/OFF (selectable from the power switch), manual or fixed gain and upgrade lens kits that have less fish-eye effect than the original manufacture ones. | ||
Fixed gain units are usually set to quite high output, their display appearing significantly brighter than the maximum setting on manually gain equipped units. | |||
=== Use === | === Use === | ||
The MNV-K is designed to function in multiple modes among which are hand-held, helmet and weapons mounted. Being somewhat bulkier but slightly lighter than a PVS-14 the Katod is a very nimble device to operate. | The MNV-K is designed to function in multiple modes among which are hand-held, helmet and weapons mounted. Being somewhat bulkier but slightly lighter than a PVS-14 the Katod is a very nimble device to operate. | ||
==== Helmet | ==== Helmet mounting ==== | ||
In line with its form factor resembling the PVS-14 pattern devices MNV-K can be used "hands free" whilst mounted on a helmet with | In line with its form factor resembling the PVS-14 pattern devices MNV-K can be used "hands free" whilst mounted on a helmet with an appropriate j-arm/bride, mount and shroud. | ||
===== Dual use ===== | ===== Dual use ===== | ||
While it is designed as a monocular device two units can be sucessfully bridged and so operated as a binocular unit without the shape of either device interfering with the other for narrow IPD settings or to minimize its footprint for storage. | While it is designed as a monocular device two units can be sucessfully bridged and so operated as a binocular unit without the shape of either device interfering with the other for narrow IPD settings or to minimize its footprint for storage. | ||
In spite of its form factor resembling the PVS-14 mounting MNV-K devices to US Standard mounts and bridges may have its challenges as the dimensions of the housing differ from its US counterpart: using a bayonet j-arm or a dual bridge together with mounts | In spite of its form factor resembling the PVS-14 mounting MNV-K devices to US Standard mounts and bridges may have its challenges as the dimensions of the housing differ from its US counterpart: using a bayonet j-arm or a dual bridge together with mounts of limited height adjustment will result in eyepiece center sitting slightly lower than an average users eyes. | ||
== Technical data and specs == | == Technical data and specs == | ||
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Circuit board is liftable by removing a screw which also exposes the power connectors to the poles of the IIT. These two connectors are flexible to accomodate a bit of movement but this also causes a mechanical weak spot in that a drop fall from head height can cause the connector lips to bend and so loose contact with the IIT. While an easy problem to resolve by removing the cover and manually extracting the circuit board and adjusting the angle of the connector arms it is an inconvenience to the user should the accident happen. | Circuit board is liftable by removing a screw which also exposes the power connectors to the poles of the IIT. These two connectors are flexible to accomodate a bit of movement but this also causes a mechanical weak spot in that a drop fall from head height can cause the connector lips to bend and so loose contact with the IIT. While an easy problem to resolve by removing the cover and manually extracting the circuit board and adjusting the angle of the connector arms it is an inconvenience to the user should the accident happen. | ||
Otherwise MNV-K and Katod | Otherwise both the MNV-K and its standard companion IIT from Katod have a solid reputation as tough and durable work-horses. | ||
[[Category: Devices]] | [[Category: Devices]] | ||
Revision as of 07:40, 25 August 2022
The MNV-K is an original Russian monocular night vision housing made to accomodate the equally Russian EPM-103 series IIT (usually manufactured by Russian company Katod) with its housing specific obejctive and eyepiece.
Design and function
There are several variants of the MNV-K but the features common to all of them are -among others- onboard IR LED illumination, battery compartment opens at the rear end of the device and the power switch is located on the front. The MNV-K is usually fitted with both a mini-rail and a threaded port for attaching a standard Norotos style j-arm, other monocular arms or a dual bridges.
The eyepiece is threaded but in a different size from US mil-spec ones.
MNV-K devices are powered using a single 3V CR123 and are not compatible with higher voltage such as rechargable Li-ion 3.7V CR123R.
Its variations include features as stowed-position ON/OFF (selectable from the power switch), manual or fixed gain and upgrade lens kits that have less fish-eye effect than the original manufacture ones.
Fixed gain units are usually set to quite high output, their display appearing significantly brighter than the maximum setting on manually gain equipped units.
Use
The MNV-K is designed to function in multiple modes among which are hand-held, helmet and weapons mounted. Being somewhat bulkier but slightly lighter than a PVS-14 the Katod is a very nimble device to operate.
Helmet mounting
In line with its form factor resembling the PVS-14 pattern devices MNV-K can be used "hands free" whilst mounted on a helmet with an appropriate j-arm/bride, mount and shroud.
Dual use
While it is designed as a monocular device two units can be sucessfully bridged and so operated as a binocular unit without the shape of either device interfering with the other for narrow IPD settings or to minimize its footprint for storage.
In spite of its form factor resembling the PVS-14 mounting MNV-K devices to US Standard mounts and bridges may have its challenges as the dimensions of the housing differ from its US counterpart: using a bayonet j-arm or a dual bridge together with mounts of limited height adjustment will result in eyepiece center sitting slightly lower than an average users eyes.
Technical data and specs
The MNV-K weighs in at around 320 grams and is powered by a single 3V CR123 cell. It has a removable rubber eyecup and comes with a light filtering protection lens held in a rubber cap for daytime training.
The housing is made from polymer with the circuitry acessible by removing a cover. Circuit board is liftable by removing a screw which also exposes the power connectors to the poles of the IIT. These two connectors are flexible to accomodate a bit of movement but this also causes a mechanical weak spot in that a drop fall from head height can cause the connector lips to bend and so loose contact with the IIT. While an easy problem to resolve by removing the cover and manually extracting the circuit board and adjusting the angle of the connector arms it is an inconvenience to the user should the accident happen.
Otherwise both the MNV-K and its standard companion IIT from Katod have a solid reputation as tough and durable work-horses.
