Ross MB-651, User Manual, Page: 20 / 42

3–2 • Configuration MB-651 User Manual (Iss. 04)
Using the Front Panel Display
This section provides a brief summary of the display panel located on the front of the MB-651.
From this panel you can monitor the MB-651.
Figure 3.1 MB-651 Front Panel — Display
1. Audio Channel Bar Graph
This sixteen channel bar graph represents the VU/PPM meter where reference can be -20dBFS
(the default value) or -18dBFS. This value can be set in DashBoard via the
Settings tab as
outlined in Table 4.7 on page 4-5.
2. FAST Bar Graph
This ITU 1770-3 LKFS bar graph reports the FAST 1 second integration time.
3. Long Term Readout Time
This value is configurable via the options on the LKFS tab in DashBoard.
• ITU 1770 LKFS non gated moving variable.(1 to 30 seconds)
• ITU 1770-2 LKFS gated moving loudness (LT). (30 seconds)
• ITU 1770-2 LKFS gated window (LT). (1-1200 seconds)
4. True Peak Readout
This value is the ITU 1770-3 LKFS numerical read-out of the true peak (PK).
5. Signal Data Display
This area includes the following fields:
• SIG field — Displays the type of SDI signal.
• GRP field — Indicates which groups of audio are present.
• RST field — Represents the timer and is configured via the Front Panel Display options
on the LKFS tab in DashBoard as follows:
› This field is reset each time you select a different source.
› If the Front Panel Display is set to Var Win , it will display the window set time.
› If the Front Panel Display is set to Gated Win , a fixed 30sec window will be
indicated.
› If the Front Panel Display is set to Integrated , it will count to the Gate Time value
(on the LKFS tab in DashBoard), and stop.
6. Speaker Volume
This area represents the speaker volume level. A flashing number with an
X
underneath it
indicates that the speakers are muted (the
VOLUME
control knob was pushed inwards).
1) Audio Channel Bar Graph 3) Long Term Readout Time 5) Signal Data Display
2) FAST Bar Graph 4) True Peak Readout 6) Speaker Volume
VOLUME HEADSET
1 FAST INT LKFs PEAK — — — 2 3 4 5 6 7 8 dB
SIG:
GRP:
RST: 720P
1234
13:41
-20 -06
4
1 2 3 4
5 6 7 8
L R
Lt/Rt SUM
1
2
5 6
4
3