NiCOM USA AP1000FP06 UHF TV AMPLIFIER User Manual USERS MANUAL 3

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Document ID	822026
Application ID	y1RNuU/TRfRa0dfuIf7/BQ==
Document Description	USERS MANUAL 3
Short Term Confidential	No
Permanent Confidential	No
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Document Type	User Manual
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Filesize	11.96kB (149535 bits)
Date Submitted	2007-07-27 00:00:00
Date Available	2007-07-31 00:00:00
Creation Date	2006-05-19 14:17:20
Producing Software	Adobe Acrobat 6.0.2 Paper Capture
Document Lastmod	2006-05-19 14:28:49
Document Title	USERS MANUAL 3
Document Creator	HP PrecisionScan Pro 3.0

Section 3 - Operation
Contents:
3.1 Operation
32 Display
3.3 Menu
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3.1 OPERATION
At stattup, afier initial image, the display shows the main screen withthe RF powers as in Figure 1 :
Tll' Hmplitier 17:42
minnow
lief: mt PEIlK
Figure 1: Main screen
The user may turn on and off the amplifier by means of the switch on the front panel. The control board turns
on all the power supplies, the exciter (if any), and internal cooling fans. While the amplifier is working, the
micro-controller monitors continuously the most important parameters: power supply voltages, absorbed
currents, high power zone temperature, forward andreflected powers, imbalances (if any). Each measure is
associated to a maximum threshold beyond which the amplifier is immediately put in protection status by
turning ofl‘ one or more power supply, depending on the failed block In order to prevent a temporary problem
to triggera definitive protection status, the failed block is turned on again, afier some seconds, for up to five
times If it goes beyond the protection threshold for more than five times, it is declared as FAILED and it will
no longer be turned on. In this case, the amplifier will have to be turned off manually by means of the switch on
the front panel, then turned on again afier performing the needed maintenance.
On the front panel there are also three LEDs labelled ON, REMOTE and ALARM. Their meanings are
explained inTable 1.
The amplifier has been tuned on
The amplifier is on localty but it has been tuned off by
remote
Remote control is
enabled It never bfi rks
An alarm is present It never blinks
Table 1: Meanings of the three LEDs on the front panel
‘ Screenshots in this manual are indicative, so they can be different from those on your equipment.
3.2 DISPLAY
The control board is provided with amodern pixels graphic display with blue background. Normally it always
shows a title bar (on the top line) and a status bar (on the bottom line).
The title bar, see Figure 2, shows the name of the amplifier (TV Amplifier) and the current time. If the amplifier
is a single unit coupled externally with other units in a high power transmitter, the title bar shows the amplifier
number (slave address) too.
i T? llmplifier 1021 b
um“ F?—
Figure 2: Title bar
The status bar (Figure 3) indicates the forward and reflected powers andthe temperature. It also contains two
symbols for the interlock flock) and the alarm (bell).
1&131440“ ll" 27' D
Figure 3: Status Bar
The bell symbol is continuously displayed in case of alarm. It blinks if there has been an alarm which has ended
but has not yet been seen by the user. It stops blinking once the Log has been checked.
The interlock symbol is displayed only when this function is enabled. It may be either a close lock, as in Figure
3, when there is no alarm (interlock chain closed) or an open lock in case of alarm (interlock chain open).
Since the status bar is always showed on the display, regardless of the screen, the user may monitor at any
time the most important parameters and the presence of alarms while moving between different screens.
3.3 MENUS
The user may see or modify locally some configuration parameters using the four buttons on the front panel.
All screens areorganized in a hierarchical menus and the user may move between them in a simple and intuitive
way.
To see the menu it’s sufficient to press the ESC key (see Figure 4).
TV amplifier 11 21
11m:-
Power Supplies
Figure 4: Main menu
The display only shows three items at a time: all the items can be scrolled by the UP and DOWN arrow keys.
Any item can be chosen by selecting it and pressing the RET key. Menu entries with an arrow on the right
lopen sub-menus when chosen. Thus there is ahierarchical structure as in Figure 5. To go back from a sub-
menu to the previous menu, press the ESC key‘ Ifthe ESC key is pressed in the main menu, the RF powers
screen is accessed.
—> View Log/Alarms
Clear Log/Alanns
Log Mode
Exil
—> BacngM
~r| View Tlrner “Comm
RF Power: “me' Rm“ Screens-aver
Power Ex" Exit
Working Timer >
Thresholds ~—’ RMSIPeak'
Seuings > Dale/rime
5in Display
Frequency'
Slave Address
‘ Menu item present
Rem only on certain amplifier
Interbck models.
Release
Serial Number
Exit
Figure 5: Hierarchical menu stmcture
All menu items are described in detail below
- RF Power:
This is the main screen showing the RF powers of the amplifier: forward power, reflected power, imbalances,
if any. For forward power a level bar is displayed. See an example in Figure 1c
- Power Supply
This screen shows all the signals coming fi-orn two power supply. To check the next (previous) power supply
press the UP (DOWN) key. For each power supply, the voltage, the absorbed current and the status (ON or
OFF) are shown.
T? amplifier 23 06
| (ON) 2 (on)
H‘I:49.8‘|’ '1|'E=50.2‘r'
H: 6.6“ IE: 6.9“
Figure 6: Power supply screen
- Log/A [arms
The control board is provided with an external EEPROM and a clock Any alarm or switching event with the
time at which it occurred is saved in the EEPROM. The Log/Alarms sub-menu allows to manage this log.
It is possible to see the events stored in the log by selecting Log/Alarms —>Wew Log/Alarms All events
can be scrolled by pressing the UP and DOWN keys. For example, the event shown in Figure 7 is the tuming
on of the amplifier by means of the local switch. For every event/alarm a short description and the date and
time at which it occurred is displayed.
TU llmplifier 12 38
Event 35!“
Mr‘lflr‘lB 10:20:52
Local DH
Figure 7: Event stored in the log
@J
In case of alarm, the value of the measure which caused the alarm is saved into the log. In case of alarm still
existing afier five firming—on attempts, the parameter is marked as FAILED Table 2 is the list of all the events
which can be logged.
Local ON Amplifier turned on by means otthe local switch
Amplifier turned off by means of the local switch
Amplifier tuned on remotety
Amplifier tuned off remotely
Interlock open Interlock chain open
Intertock closed Interlock chain closed
Power Supply ON Power supply on
Alarm for forward power
Ref Pwr mow Alarm for reflected power
Unbalancing alarm
Power supply voltage alarm
Power supply current alarm
Table 2: Events managed and logged by the control board
The log may be completely deleted by selecting Log/Alarms —-> Clear Log/Alarms.
Amplifier can store inthe log details about alarms and generic events. You can change this behaviour selecting
log/Alarms —>Log/Mode menu item.
- Working Timer
The control board has a working timer which is always enabled while the amplifier is working (i. e. there is at
least one power supply working). The menu entry Working Timer —>View Timer allows to check the hours
for which the timer has been enabled. Working Timer —>T1mer Reset resets the timer.
- Thresholds
This is a screen showing the alarm threshold of each signals monitored by the control board The listcanbe
scrolled by means of the UP and DOWN keys.
fifil
- RMS/Peak
The control board can monitor both the RMS and peak powers, the first used in digital systems. The menu
entry Settings—b RMS/Peak allows to choose the power to be displayed and monitored. This menu is
present only in certain amplifiers.
~ DatflTime
This screen allows to set the current date and time. The setting is changed by pressing the arrow keys, then
pressing the RET key to move to the following value and eventually save the changes. To go back to the
previous menu and discard any change made, press the ESC key. Figure 8 shows an example of this screen.
T'U amplifier 12 58
Set Ilaler‘Time
[E58
MENTOR
Figure 3: Date and time setting screen
- Display
The menu entry Settings —> Display allows to change some settings of the display, such has back light,
contrast and screensaver. The back light and the contrast are set by means of the UP and DOWN arrow
keys. The changes made are saved by pressing the RET key or discarded pressing the ESC key. Figure 9
shows an example of this screen.
With Settings —> Display —> Screensaver you can set an interval time afier which display backlight is
turned off When display backlight is off, press any key to switch it on.
TU Ilmplifier 13:13
Figure 9: Disp|ay contrast setting screen
fii
- Frequency (only for some Amplifiers)
The forward and reflected RF powers is measured by means of a directional coupler. In order to compensate
for the efi'ect due to the sampling made by the coupler, it is possible to set the frequency by menu entry
Settings ——>Frequency. The setting can be changed by pressing the arrow keys. The changes made are
saved by pressing the RET key or discarded pressing the ESC key. Set the video carrier frequency.
- Slave Address
The amplifier may be used either in stand-alone mode or as a slave of a master in a high power multiple units
transmitter. In the latter case an unique address for each amplifier has to be specified, in order for all of them
to communicate with the master on the same RS485 bus. The menu entry Settings —> Slave Address
allows to choose the stand-alone mode or set a slave address by means of the UP and DOWN arrow keys.
The changes made are saved by pressing the RET key or discarded pressing the ESC key. An example of this
screen is shown in Figure 10.
W amplifier 13 56
Set llddress
amplifier 3
Press av to change.
Figure 10:8lave address setting screen
- Remote
The amplifier may be controlled either locally, by means of the keys and display, or remotely There are three
possibilities for remote control:
- using a direct serial connection between amplifier RSZ32 connector and a PC RSZ32;
- using the remote control device manufactured by NicomUsa, Inc (RCU), on the RS485;
- using a general-purpose control system connected to telemeasures.
You can enable/ disable remote control choosing menu item Settings ——> Remote. When remote control
is mabled, the yellow REMOTE LED on the front panel is lit.
- Interlock
One of the pins of the telemeasure connector, located on the rear panel, is used for the interlock alarm. It is an
input line which turns off the amplifier in case of alarm, The interlock check can be enabled or disabled using
menu itemSetfinp Interlock. When it is enabled, the status bar shows the lock symbol (see Figure 3),
which is close if the interlock chain is closed (no alarm) or open if it is open (alarm).
- Firmware Release
The menu entry Settings -—-> Firmware Release allows to display the firmware version number and the
hardware release ofvhe amplifier.
- Serial Number
The menu entry Settings ——> Serial Number allows to display the serial number of the apparatus.

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