User manual

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VM SDI Digital Series User Manual P/N 821625 Rev-A

Please refer to Figure-2b on the facing page to familiarize yourself with the rear panel features of the VM SDI Digital Series units.

The following sections describe these features and are referenced, by letter, to Figure-2b.

Power Connector

Attach the supplied IEC-320 power cord between this connector and mains power.

SDI Input Connector

This BNC input connector (SDI IN) is configured for unbalanced, 75

ΩΩ

Ω impedance connections. In the VMSDA-1 model,

this input accepts standard SDI formatted digital signals. In the VMMDA-1 model, this input accepts either standard SDI

or HD-SDI (high-definition SDI) formatted digital signals. To monitor the digital source signals entering this input connector,

set the Source Select Switch (Item 10, page 8) to SDI.

Note: The SDI Lock Status LED (Item 4, page 8) will continue to indicate SDI lock status for this input even when the

SDI source is not selected for monitoring.

SDI Output Connector

This BNC connector (SDI OUT) outputs a reclocked (regenerated) copy of the signal entering the SDI Input Connector

(Item B).

Analog Output Connector (Left and Right)

This "mini" Phoenix style (Mini-Combicon) dual vertical, 6-position terminal block connector outputs an analog signal of

the source currently selected for monitoring. When the selected source is digital (AES, SDI, or HD-SDI), the unit will

automatically de-embed the audio to analog for output from this connector. The top three positions are the left output; the

bottom three positions are the right output. Pinout information is silk-screened just below the connector.

AES Balanced Input

This "mini" Phoenix style (Mini-Combicon) 3-position terminal block connector receives AES digital signals and is configured

for balanced 110

ΩΩ

Ω impedance connections. To monitor the source signals entering this input connector, set the Source

Select Switch (Item 10, page 8) to AES.

Note: There is only one AES input channel; do not connect two AES signal sources simultaneously to both the balanced

and unbalanced AES input connectors. Only one AES input connector (balanced or unbalanced) should be used at a time.

AES Unbalanced Input

This female BNC connector receives AES digital signals and is configured for unbalanced 75

ΩΩ

Ω impedance connections.

To monitor the digital source signals entering this input connector, set the Source Select Switch (Item 10, page 8) to AES.

Note: There is only one AES input channel; do not connect two AES signal sources simultaneously to both the balanced

and unbalanced AES input connectors. Only one AES input connector (balanced or unbalanced) should be used at a time.

AES Termination DIP Module

This 2-position DIP switch module is used to set the termination characteristics for the AES input channel (both balanced and

unbalanced). In the event that the AES input channel is fed to downstream equipment, DIP switch section 1 ( left-side switch)

should be placed in the UP (unterminated) position. If there are no downstream connections, then DIP switch section 1 should

be placed in the DOWN (terminated) position. Note: Section 2 of the DIP module is not used.

Analog Input Connector

This "mini" Phoenix style (Mini-Combicon) dual vertical, 6-position terminal block connector accepts standard analog

signals and is configured for balanced 100k

ΩΩ

Ω impedance connections. The top three positions are the left output; the

bottom three positions are the right output. Pinout information is silk-screened just below the connector. To monitor the

analog source signals entering this input connector, set the Source Select Switch (Item 10, page 8) to ANALOG.

Rear Panel Features

Section 2: Operation