Grass Valley M-Series iVDR Service Manual - Manual (Page 24)

24 M-Series Service Manual 6 July 2004
Chapter 1 Product Description
The optional Front Panel provides a control panel user interface for the M-Series
iVDR. The panel attaches directly to the front of the iVDR or remotely with an
optional cradle and extension cable. The Front Panel includes the following
components:
The display is a color flat panel display overlaid with a touch screen that translates
finger contact into mouse-type USB control information. The VGA resolution of the
display is 640 x 480 pixels.
The manual controls on the Front Panel include an audio level control knob, four
transport control buttons, a Jog/Shuttle knob with three control buttons, four channel
selection buttons, and a selection knob.
LEDs indicate current control activities. Buttons have integrated LEDs that light up
when the button is activated. The channel selection buttons also have adjacent LEDs
that light up as indicators when the channel is under remote control.
The audio interface includes a stereo headphone connection with a volume knob,
powered by a stereo amplifier integrated into the Front Panel. The volume knob can
be configured to also control the volume level of the iVDR rear panel audio monitor
output.
Two USB ports are provided on the bottom edge of the Front Panel for directly
connecting keyboard and mouse.
The brightness control adjusts the Front Panel display. The knob is located on the
back of the Front Panel.
The cable and connection is a DVI-D connector with a modified pin-out specific to
the iVDR. The DVI connection provides graphical, audio, and USB control signals to
the Front Panel. It also provides a +12 volt power source. For local mounting, the
Front Panel is connected to the AGP board via a front-facing connector and short
cable. For remote mounting with the optional cradle kit, the Front Panel is connected
to the AGP board via a rear-panel connector and five meter extension cable.
Refer to “Front Panel or door removal” on page 70 for procedures.
Refer to the M-Series User Manual for instructions on using the Front Panel.
Media drives
The media drives are accessed from the front of the iVDR. They are located behind
the Front Panel or door and fan module. Media drives operate in groups of three, for
a total of either three or six drives in an iVDR. The drives in each group of three must
be identical. Drives are available in different sizes to accommodate a range of storage
capacity needs.
Media data is written or “striped” across a group of three drives in a continuous
fashion, which makes the three drives a “stripe group”. Stripe groups appear as the V:
drive to the Windows operating system. Because of this stripe group relationship, if
one media drive is removed during media access or is faulty, all data is lost on the
entire stripe group. To make a new stripe group you must use the Storage Utility
“Make File System” feature.
Refer to “Media disk removal” on page 71 for procedures.