MRC DRS4000, Руководство пользователя и техническое руководство

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Routine Operation 2-8 DRS4000 Receiver User and Technical Manual
• Audio
• Bit Rate.
Preset Line This region displays the current Preset as a
number and a text label.
Service Line This line displays the read-only service ID of the
active transmitter.
Data Status Line This region displays the following information:
• BER (Bit Error Rate)
• COFDM Lock - When green. indicates COFDM is locked;
when red, indicates COFDM is unlocked
• Vid Lock (video lock) - When green, indicates video is
locked; when red, indicates video is unlocked.
Signal Displays Area These areas displays real-time
indications of all antenna inputs as a set of animated vertical
bars.
• The RCL group of readings displays receive carrier levels
(RCL) in dBm.
• The SNR group displays signal-to-noise ratios (SNR) in
dBm.
• The Link Qual group displays link quality as a derived
number from 0 to 9 with 9 being the best signal.
Menu Buttons This region contains the menu selection buttons
that provide access to other menus and settings screens.
2.5 Using the Video Monitor
The video monitor provides a live view of the incoming video
signal. With the spectrum viewer option, the monitor overlays
the video picture with an RF spectrum of the signal.
The video monitor is typically blank when there is no incoming
video signal.
If, for any reason, the receiver should lose the incoming signal,
the monitor will display either a freeze frame or a blank screen.
This setting is controlled by the
Video Fail Mode menu under
the Setup menu.
2.6 Keypad Operation
The control screen and keypad are shown in Figure 2-4 . The
keypad consists of membrane-type switches that provide
momentary contact closure when pressed.
Figure 2-4: Control Menu and Keypad- Typical
The keypad keys have the following functions:
Arrow Keys On the control screen, the arrow keys move the
highlighting cursor around the screen. Press the left or right
arrows to move across the screen, and press the up or down
arrows to move up or down the screen.
Preset 1: XXXXXXXXXXXXX
Service No Service
BER 2.16x10 COFDM Lock Vid Lock
Setup Presets
Camera
Options
DRS4000
Chan 1 (0) (17MHz)
Freq 1999.000 MHz
RFBand 1.9-2.5GHz
Mode DVB-T
Mod QPSK
BW 8MHz
FEC 2/3
G/I 1/8
Video SD
Audio Analog
BitRt 15.61Mbps
Polarity Norm
RCL dBM SNR dB Link Qual
-6
A
A
A B B B
-44
-20
20 21 6
7
B
D
D
D C C C
13
-57
-50
5
5
2 BACK OK