EuroTel ETL0W474G, Руководство по эксплуатации и техническому обслуживанию

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ETL0W474G Rev. 004
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ETL0W474G: front panel controls, displays & connectors ETL0W474G: front panel controls, displays & connectors
ETL0W474G: front panel controls, displays & connectors
The front panel of the series ETL0W474G TV RF AMPLIFIER is shown in Figure 2. The controls, displays
and connectors on the front panel are as follows:
FRONT PANEL
FRONT PANEL FRONT PANEL
FRONT PANEL ICON
ICON ICON
ICON ITEM
ITEM ITEM
ITEM DESCRIPTION
DESCRIPTION DESCRIPTION
DESCRIPTION
SIGNALS &
SIGNALS & SIGNALS &
SIGNALS &
CONNECTIONS
CONNECTIONS CONNECTIONS CONNECTIONS
1 RF MONITOR BNC socket. Provides a monitoring sample of the RF
output.
2 SERIAL PORT RS232 Type “D”, 9-pin socket. Makes RF Amplifier parameter
data available for display on an external PC or
monitoring system.
(RS-232 format)
PUSHBUTTONS
PUSHBUTTONS PUSHBUTTONS
PUSHBUTTONS
3
SELECT Controls the menu levels and is menu driven, as
explained in detail in the “MENU DESCRIPTION”
following.
~
Normally controls the lower row of the display and is
menu driven.
~
Normally controls the upper row of the display and is
menu driven.
PREV. Controls the menu levels and is menu driven, as
explained in detail in the “MENU DESCRIPTION”
following.
DISPLAYS and LED’s DISPLAYS and LED’s DISPLAYS and LED’s DISPLAYS and LED’s 4 MULTIFUNCTION
METERING DISPLAY Two row, 16-character alphanumeric display. Shows
levels of: RF output power, supply voltage, supply current
and heat-sink temperature. It also shows warning
conditions, alarm conditions and other information.
5
A.C. POWER LED (YELLOW) Shows presence of mains voltage.
ON AIR LED (GREEN) Indicates that the RF Amplifier is operating normally and
RF output is within specified limits.
ALARM LED (RED) When lit, this LED indicates that one alarm has occurred.
In this condition the Metering, alarm and Protection
module immediately disables the amplifier.
V.S.W.R. ALARM LED (RED) This indicator shows that the reflected RF power alarm has
been triggered. As soon as it turns on, the power supply is
disabled.
WARNING LED (YELLOW) Indicates one or more warning conditions in act, if
blinking indicates alarm or warning stored in the EEPROM
non-volatile memory.
Page 14 CMAN0W474G Oct 2013