These AES/MADI/ASI ground isolators use a broadband high-pass filter to provide complete galvanic isolation of DC currents between two pieces of equipment, whilst permitting the full bandwidth of the digital signal to pass, thus avoiding problems of signal distortion and operator shocks caused by a voltage difference. This method out-performs broadband transformers for these digital signals. Additionally, some broadband transformers invert the signal, which is incompatible for use with ASI. Both the signal and ground paths between equipment are isolated, there is no distortion of the signal.
There are three types with different housings; one type has an encapsulated enclosure which may be rack-mounted with an accessory panel, one is an in-line 'barrel', without a mounting flange and the third is an in-line 'barrel', with mounting flange
Common specifications are as follows. Input and output impedance: 75 ohms. Return loss: Better than 20dB.
Note 1: These are minimum values.
LAMF01 - Encapsulated Enclosure
LAMF01 is for use with the AES, MADI and ASI standards. It is built in an ABS enclosure fitted with two female BNC connectors. Two M3 mounting screws are provided on the same face as the connectors, so that the filters can be mounted flat to a panel, with the connectors protruding through it.
Dimensions (LxWxH): 45 x 30 x 15mm. Weight: 26g.
Optional accessories: LMPF01 rack frame is a 1U 19-inch panel, finished in black, punched to take eight filters mounted from the rear by means of the mounting screws, the BNC connectors facing out of the rack. If it is desired to have the connectors facing into the rack, the filters may be reversed, revealing the filter modules which will protrude 15mm from the surface of the panel.
LAMGI01 - In-line 'Barrel' Types
LAMGI01 is for use with the AES, MADI and ASI standards. It is built into a cylindrical plastic (for isolation) enclosure, fitted with a BNC connector at each end. It is ideal for carrying in a toolbox, to cure interference issues.
Dimensions: 30 x 20 (l x diameter) mm. Weight: 36g.
LAMGI02 - In-line 'Barrel' Types, with mounting flange for through panel mounting
LAMGI02 is for use with the AES, MADI and ASI standards. It is built into a cylindrical plastic (for isolation) enclosure, fitted with a BNC connector at each end. An industry-standard size mounting flange is fitted at one end.
Dimensions: 30 x 20 (l x diameter) mm, mounting flange 31 x 26 mm. Weight: 37g.
Optional accessories: The LMPG01 rack frame is a 1U 19-inch full width panel, finished in black, punched to take sixteen isolators mounted from the rear by means of the mounting flanges, so that the BNC connectors are on either side of the rack. The LMPG02 rack frame is a 1U 19-inch half width panel, punched to take eight isolators, mounted in the same way as the full width panel.