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P. 22, Connecting external equipment, About the ground terminal – Roland V-1200HD Multi-Format Video Switcher User Manual

Page 22: About the audio selector switch, Gnd cold hot hot cold gnd

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22

Connecting External Equipment

* To prevent malfunction and equipment failure, always turn

down the volume, and turn off all the units before making any

connections.

* Provide cable and adapter plugs to match the connector

configuration on the equipment you’re using.

* This instrument is equipped with balanced (XLR) type jacks.

Wiring diagrams for these jacks are shown below. Make

connections after first checking the wiring diagrams of other

equipment you intend to connect.

AUDIO IN connector

AUDIO OUT connector

GND

COLD

HOT

HOT

COLD

GND

About the Ground Terminal

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Depending on the circumstances of a particular setup, you may

experience a discomforting sensation, or perceive that the surface

feels gritty to the touch when you touch this device, microphones

connected to it, or the metal portions of other objects. This is due

to an infinitesimal electrical charge, which is absolutely harmless.

However, if you are concerned about this, connect the ground

terminal (see figure) with an external ground. When the unit is

grounded, a slight hum may occur, depending on the particulars

of your installation. If you are unsure of the connection method,

contact the nearest Roland Service Center, or an authorized Roland

distributor, as listed on the “Information” page.

Unsuitable places for connection

Unsuitable places for connection

5

Water pipes (may result in shock or electrocution)

5

Gas pipes (may result in fire or explosion)

5

Telephone-line ground or lightning rod (may be dangerous in

the event of lightning)

About the Audio Selector Switch

The V-1200HD’s audio input/output connectors support either

analog or digital (AES/EBU) signals. Use the audio selector switch to

choose the signal type for your connected equipment.

* The audio selector switch setting affects both input and output

signals. For example, selecting “ANALOG” sets both the AUDIO IN

and AUDIO OUT connectors to function as analog connectors.

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