User guide

VAMP2 Series User Guide

Front Panel Features

When CVBS 1 or 2 is selected, one of the two corresponding CVBS

inputs on the rear panel is selected for monitoring. See the Audio

Select

button (page 14) for information about selecting audio

inputs with video monitoring. Note that the selected CVBS LED will

glow green when selected.

• Channel Indicators (LEDs, 1 through 4): These four LEDs (1, 2, 3,

and 4) indicate when the associated channel is assigned to one or

both speakers. When these LEDs glow green, the channel is

assigned to the left speaker, when amber, the right speaker. When it

alternates between green and amber, the channel is assigned to both

speakers. The LEDs are not lit when the channel is not assigned to

either speaker.

• Level Meters (53-Segment Bar Graph): These high-resolution, LED

bar graph meters display audio levels for metered audio signals.

Ballistics for these meters are factory set to display a single floating

PPM dot above a VU bar; each segment’s color is fixed according to

its position on the scale. Reference level is +4 dBu. Dynamic range

for these meters is 66 dB.

• Phase (Bi-Color Red/Green LED): The audio phase indicator

shows the phase relationships between audio channels A (1) and B

(2). The LED indicates the average phase condition by glowing

green for in-phase conditions or red for out-of-phase conditions.

While it is normal for stereo signals to contain some intermittent

instantaneous out-of-phase and in-phase conditions (flickering red)

a steady red glow of the phase indicator almost always indicates an

out-of-phase alarm condition.

• Speaker Select (Push Button): This switch routes the audio signal

to either the internal speakers or to external speakers connected to

the terminal posts on the rear panel.

• SDI Signal Lock (LED): When the monitor receives a valid and

locked SDI video signal, this LED lights green.

• SDI Select (SEL) (Push Button and LED Indicators): This control

selects one of two inputs, HD/SD-SDI (MDA model) or SD-SDI

source (SDA model) for monitoring when either the

Video Source

select button or the

Audio Source select button is set to SDI. When

the SDI 1 source is selected for monitoring, the LED will not be lit.

When the SDI 2 source is selected, the LED indicator will glow

green.