COM-power corporation ARI-6000-100W User manual

Page 1 of 42
INSTRUCTION MANUAL
ARI-6000-100W RF Power Amplifier

19121 El Toro Rd ●Silverado, California 92676 ●[phone] ●com-power.com
REV011718
INSTRUCTION MANUAL
for
RF POWER
AMPLIFIER
Model:
ARI-6000-100W

Page 2 of 42
INSTRUCTION MANUAL
ARI-6000-100W RF Power Amplifier

- TABLE OF CONTENTS -
19121 El Toro Rd ●Silverado, California 92676 ●[phone] ●com-power.com
REV011718
Table of Contents
1.0 Introduction ........................................................................................................... 5
2.0 Products Available from Com-Power ................................................................. 6
3.0 Product Information .............................................................................................. 7
3.1 Product Description................................................................................................................. 7
3.2 Incoming Inspection............................................................................................................... 7
3.3 Safety Information................................................................................................................... 8
3.3.1 Definitions of Safety Notes and Symbols ...................................................................... 8
3.3.2 General Safety Considerations ...................................................................................... 8
3.3.3 General Safety Instructions/Precautions ...................................................................... 9
3.4 Product Features ................................................................................................................... 11
3.5 Product Specifications..........................................................................................................13
4.0 Installation............................................................................................................ 15
4.1 Power Requirements .............................................................................................................15
4.2 Earthing .................................................................................................................................. 15
4.3 Load Requirements ...............................................................................................................15
4.4 Cable Connections...............................................................................................................15
4.5 Statement Against Unspecified Use .................................................................................... 15
4.6 Controls, Indicators, and Connectors ................................................................................. 15
4.7 Before Turn On ....................................................................................................................... 16
4.8 Turn On ................................................................................................................................... 16
4.9 Basic Operation..................................................................................................................... 17
4.9.1 ON/OFF Switch................................................................................................................ 17
4.9.2 AC Power Indicator Lamp ............................................................................................ 17
4.9.3 Fault Indicator Lamp...................................................................................................... 17
4.10 Turn Off ................................................................................................................................... 17
5.0 Operation............................................................................................................. 18
5.1 Front Panel Controller ........................................................................................................... 18
5.1.1 Introduction..................................................................................................................... 18
5.1.2 Controls and Display...................................................................................................... 18
5.1.3 Run Mode ........................................................................................................................18
5.1.4 User Interface..................................................................................................................19
5.1.5 Display.............................................................................................................................. 19
5.1.6 Faults ................................................................................................................................ 21
5.1.7 Run Mode Status Displays ............................................................................................. 22
5.1.8 User Configuration Options........................................................................................... 25
5.1.8.1 Example: Setting the VSWR Monitor ............................................................................. 27

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INSTRUCTION MANUAL
ARI-6000-100W RF Power Amplifier

- TABLE OF CONTENTS -
19121 El Toro Rd ●Silverado, California 92676 ●[phone] ●com-power.com
REV011718
5.2 GPIB, RS-232 and RS-422 Command Summary.................................................................. 29
5.2.1 Serial Communication Parameters ............................................................................. 30
5.2.2 GPIB Parameters............................................................................................................. 31
5.2.2.1 Message Terminator ........................................................................................................ 31
5.2.2.2 Commands ....................................................................................................................... 31
5.2.2.3 Status Reporting ............................................................................................................... 32
5.3 Calibration ............................................................................................................................. 34
5.3.1 System Calibration and Configuration Menu............................................................ 35
5.3.1.1 Forward Power ................................................................................................................. 35
5.3.1.2 Reverse Power .................................................................................................................. 36
5.3.1.3 Gain/VVA Levels .............................................................................................................. 37
5.3.1.4 Monitor Options................................................................................................................ 37
5.4 Interface Pin Assignments .................................................................................................... 40
5.4.1 Connector: GPIB (IEEE-488) Connector ...................................................................... 40
5.4.2 Connector: RS-232 Serial I/O ........................................................................................ 40
6.0 Maintenance and Troubleshooting................................................................... 41
6.1 Performance Test .................................................................................................................. 41
6.2 Adjustment Procedure.......................................................................................................... 41
6.3 Troubleshooting Procedures................................................................................................. 41
6.3.1 Improper Power Distribution ......................................................................................... 41
6.3.2 Low or No RF Output Power ......................................................................................... 41
6.4 Cleaning ................................................................................................................................ 41
7.0 Warranty............................................................................................................... 42

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INSTRUCTION MANUAL
ARI-6000-100W RF Power Amplifier

- LIST OF FIGURES -
19121 El Toro Rd ●Silverado, California 92676 ●[phone] ●com-power.com
REV011718
List of Figures
FIGURE 1 - Product Features – Front Panel 11
FIGURE 2 - Product Features – Rear Panel 12
FIGURE 3 - Product Dimensions 14
FIGURE 4 - Front Panel Display and Controls 18
FIGURE 5 - GPIB Status Reporting Structure 33

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INSTRUCTION MANUAL
ARI-6000-100W RF Power Amplifier

SECTION 1 - INTRODUCTION
19121 El Toro Rd ●Silverado, California 92676 ●[phone] ●com-power.com
REV011718
1.0 Introduction
This owner’s manual contains operating instructions for the ARI-6000-100W Power
Amplifier.
Information contained in this manual is the property of Com-Power Corporation. It is
issued with the understanding that the material may not be reproduced or copied
without the express written permission of Com-Power.

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INSTRUCTION MANUAL
ARI-6000-100W RF Power Amplifier

SECTION 2 - PRODUCTS AVAILABLE FROM COM-POWER
19121 El Toro Rd ●Silverado, California 92676 ●[phone] ●com-power.com
REV083017
2.0 Products Available from Com-Power
www.com-power.com

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INSTRUCTION MANUAL
ARI-6000-100W RF Power Amplifier

SECTION 3 - PRODUCT INFORMATION
19121 El Toro Rd ●Silverado, California 92676 ●[phone] ●com-power.com
REV011718
3.0 Product Information
3.1 Product Description
The power amplifier operates in the RF frequency range. The input to the power
amplifier is rated at 0 dBm nominal CW signal input for the 0.7 to 6.0 GHz
frequency range. The output of the power amplifier is specified at 60 Watts CW
(non-saturated); and 100W (saturated). Detailed specifications for the power
amplifier are given in Section 3.5.
3.2 Incoming Inspection
WARNING!
The power amplifier has been mechanically and electrically inspected prior to
shipment. If the equipment has been damaged or if electrical performance is
not within specification, notify Com-Power immediately.

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INSTRUCTION MANUAL
ARI-6000-100W RF Power Amplifier

SECTION 3 - PRODUCT INFORMATION
19121 El Toro Rd ●Silverado, California 92676 ●[phone] ●com-power.com
REV011718
3.3 Safety Information
3.3.1 Definitions of Safety Notes and Symbols
The following safety notes and symbol are used in this manual and on the
equipment. Familiarize yourself with each and its meaning before
operating this equipment.
Caution Caution denotes a hazard. It calls attention to a procedure
that, if not correctly performed or adhered to, would result in
damage to, or destruction of, the equipment. Do not proceed
beyond a caution note until the indicated conditions are fully
understood and met
Warning Warning denotes a hazard. It calls attention to a procedure
which, if not correctly performed or adhered to, could result in
injury or loss of life. Do not proceed beyond a warning note
until the indicated conditions are fully understood and met.
The instruction documentation symbol. The product is marked
with this symbol when it is necessary for the user to refer to the
instructions in the documentation.
3.3.2 General Safety Considerations
The following safety instructions have been included in compliance with
safety standard regulations. Please read them carefully.
Warning This is a safety Class I product provided with a protective
earthing ground incorporated in the AC power cord. The AC
power cord shall only be inserted in a socket outlet provided
with a protective earth contact. Any interruption of the
protective conductor, inside or outside of the equipment, is
likely to make the equipment dangerous. Intentional
interruption is prohibited.
Warning No operator serviceable parts inside. Refer servicing to
qualified personnel. To prevent electrical shock, do not
remove covers.
Warning If this equipment is used in a manner not specified by Com-
Power Corporation, the protection provided by the equipment
may be impaired.
Caution Before switching on this equipment, make sure that the line
voltage is correct and that an External Load has been applied.
(refer to Section 4.3)

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INSTRUCTION MANUAL
ARI-6000-100W RF Power Amplifier

SECTION 3 - PRODUCT INFORMATION
19121 El Toro Rd ●Silverado, California 92676 ●[phone] ●com-power.com
REV011718
3.3.3 General Safety Instructions/Precautions
• READ AND RETAIN INSTRUCTIONS - Read all safety and operating
instructions before operating the instrument. Retain all instructions for
future reference.
• HEED WARNINGS - Adhere to all warnings on the instrument and
operating instructions.
• FOLLOW INSTRUCTIONS - Follow all operating and use instructions.
• WATER AND MOISTURE - Do not use the instrument near water.
• VENTILATION - The instrument should be used/installed only in locations
where the flow of air through the ventilation openings is not impeded.
• MOUNTING – The instrument can be used in Horizontal or vertical
orientation as long as the ventilation holes are not obstructed and the
protective grounding is not defeated.
• HEAT - The instrument should be situated away from heat sources such as
heat registers or other instruments which produce heat.
• POWER SOURCES - Connect the instrument only to the type of power
source described in the operating instructions or as marked on the
instrument.

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INSTRUCTION MANUAL
ARI-6000-100W RF Power Amplifier

SECTION 3 - PRODUCT INFORMATION
19121 El Toro Rd ●Silverado, California 92676 ●[phone] ●com-power.com
REV011718
• POWER CORD PROTECTION - Place power supply cords so that they are
not likely to be walked on or pinched by items placed on them or against
them.
• CLEANING – Clean the instrument outside surfaces of the device with a
soft, lint-free cloth. If necessary, a mild detergent may be used.
• NON-USE PERIODS - Unplug the power cords of the instrument when it
will be left unused for a long period of time.
• OBJECT AND LIQUID ENTRY - Take care that objects do not fall into the
instruments and that liquids are not spilled into the enclosure through
openings.
• DEFECTS AND ABNORMAL STRESS - Whenever it is likely that the normal
operation has been impaired, make the equipment inoperable and
secure it against further operation.
• SITTING OR CLIMBING - Do not sit or climb upon the instrument or use it
as a step or ladder.
• ENVIRONMENTAL CONDITIONS -This equipment is designed for indoor
use. Ambient temperature range during operation should be between 5°
C to 40° C.
• STORAGE AND PACKAGING - The device should only be stored at a
temperature between –25 and +70 °C. During extended periods of
storage, protect the device from dust accumulation. The original
packaging should be used if the device is transported or shipped again. If
the original packaging is no longer available, the device should be
packed carefully to prevent mechanical damage.

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INSTRUCTION MANUAL
ARI-6000-100W RF Power Amplifier

SECTION 3 - PRODUCT INFORMATION
19121 El Toro Rd ●Silverado, California 92676 ●[phone] ●com-power.com
REV011718
3.4 Product Features
FIGURE 1 - Product Features – Front Panel
Main Power Switch
1
Turns on/off amplifier system power.
AC Power Indicator Lamp
2
When lit, Indicates that the system power is ON, and power is distributed throughout the
amplifier properly.
RF Input Port Connector
3
Coaxial N-Type (female) Connector for Amplifier RF Input Port.
Air Intake Vents
4
Air intake slots for system cooling.
Amplifier Mode Control Buttons
5
These four buttons are used for selecting the amplifier’s operating mode.
Front Panel Digital Display
6
Displays the selected operating parameters during amplifier operation.
Up/Down Buttons
7
These two buttons are used for incrementing the displayed value up and down,
respectively.
Fault Indicator Lamp
8
When lit, indicates that the internal temperature of the amplifier has exceeded 80°C, and
that the DC bias voltage to the main amplifier modules has been turned off.
RF Output Port Connector
9
Coaxial N-Type (female) Connector for Amplifier RF Output Port.
Handles
10
Handles attached to either side of the front panel.

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INSTRUCTION MANUAL
ARI-6000-100W RF Power Amplifier

SECTION 3 - PRODUCT INFORMATION
19121 El Toro Rd ●Silverado, California 92676 ●[phone] ●com-power.com
REV011718
FIGURE 2 - Product Features – Rear Panel
Exhaust Fans
11
Exhaust fans for cooling mounted onto exterior of amplifier rear panel.
RS232 (Serial) Communications Port
12
DB9 pin (female) connector for remote control of amplifier through RS232 or RS422 serial
communications.
IEEE-488 Communications Port
13
GPIB connector for remote control of amplifier through GPIB interface.
System Power Input Port
14
IEC C20 Inlet Connector for system power.
Ethernet Communications Port
15
RJ45 ethernet receptacle for factory maintenance purposes only.

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INSTRUCTION MANUAL
ARI-6000-100W RF Power Amplifier

SECTION 3 - PRODUCT INFORMATION
19121 El Toro Rd ●Silverado, California 92676 ●[phone] ●com-power.com
REV011718
3.5 Product Specifications
GENERAL
Frequency Range 700 MHz to 6 GHz
Class of Operation A/AB
Output Power (saturated) 100 Watts (typical)
P1dB Output Power 60 Watts (minimum)
Small Signal Gain 53 dB (minimum)
Power Gain Flatness ±5 dB @ 0 dBm input (maximum)
Input/Output Impedance 50 ohms (nominal)
Input VSWR 2:1 (maximum)
Output VSWR 2:1 operating into*
RF Input 0 dBm (nominal)
+3 dBm with no damage
ELECTRICAL
AC Input Power
100 to 240 VAC, 50/60 Hz, 1-Phase
3000 Watts
(maximum)
INPUT/OUTPUT CONNECTORS
Input Connector
N-type
(female)
Output Connectors
N-type
(female)
AC Input Connector
IEC C20 Receptacle
RS232/RS-422 Serial Interface
DB9pin
(female)
Connector
GPIB Interface
GPIB Connector
ENVIRONMENTAL
Operating Temperature
32° F to 122° F
(0° C to 50° C)
Operating Humidity Range
95% (non-condensing)
Temperature Protection
Shut-down @ 80°C (minimum)
Cooling System
Internal Forced Air
MECHANICAL
Dimensions (H)x(W)x(D) (5U) 8.75” x19” x24.5”
(22 cm x 48.3 cm x 62.2 cm)
Weight 95 lbs. (43.1 kg)
* Any output VSWR match >2.5:1 may result in reduced power and/or activate amplifier’s “Reverse
Power” protection.
Specifications given at 25°C.
Specifications subject to change without notice.

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INSTRUCTION MANUAL
ARI-6000-100W RF Power Amplifier

SECTION 3 - PRODUCT INFORMATION
19121 El Toro Rd ●Silverado, California 92676 ●[phone] ●com-power.com
REV011718
FIGURE 3 - Product Dimensions

Page 15 of 42
INSTRUCTION MANUAL
ARI-6000-100W RF Power Amplifier

SECTION 4 - INSTALLATION
19121 El Toro Rd ●Silverado, California 92676 ●[phone] ●com-power.com
REV011718
4.0 Installation
4.1 Power Requirements
The power amplifier requires a power source of 100 to 240 VAC, 50/60 Hz capable
of delivering 3000 Watts. Turn off the front panel ‘ON/OFF’ switch before
connecting the AC power source.
4.2 Earthing
Earthing is achieved simultaneously with connection of the AC power cord to a
properly grounded power source.
4.3 Load Requirements
The power amplifier requires an output load, antenna, or dummy load with a 50-
Ohm nominal impedance.
CAUTION Make this external load connection before applying power to the
equipment.
4.4 Cable Connections
The AC power cable connection is made at the rear of the power amplifier via
the receptacle connector. RF connections for Input and Output are made at via
the front Type-N connectors.
4.5 Statement Against Unspecified Use
This amplifier must be used as specified by the manufacturer. Use of this
equipment in any way not specified by the manufacturer may result in bodily
injury and/or damage to the equipment.
4.6 Controls, Indicators, and Connectors
When set to ‘ON’, the AC power indicator lamp will light, indicating that AC
power is present. The RF INPUT and OUTPUT connections are located on the front
of the power amplifier. Refer to the following discussion and Section 3.1 for the
location and functional description of all controls, indicators, and connectors.
IMPORTANT NOTE! - User Selectable Control
There are three control options available for operation of this system:
1) Manual control via the front panel controls.
2) Optional Remote control via the IEEE-488 bus.
3) Optional Remote control via RS-232/422.

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INSTRUCTION MANUAL
ARI-6000-100W RF Power Amplifier

SECTION 4 - INSTALLATION
19121 El Toro Rd ●Silverado, California 92676 ●[phone] ●com-power.com
REV011718
4.7 Before Turn On
CAUTION! Do not obstruct the airflow at the front and rear of the power
amplifier. If you do not verify that this equipment has an unobstructed
airflow, you may cause this equipment to overheat or otherwise impair
its operation.
Perform the following preliminary procedures before energizing the equipment:
Check that the ON/OFF switch is set to the ‘OFF’ position.
At the rear of the RF power amplifier, verify that the AC cord is properly inserted
into the AC system power input receptacle.
Verify that the RF Input Port is properly connected to the RF source, having a
nominal output impedance of 50 ohms. ENSURE THAT THE RF OUTPUT OF THE RF
SOURCE EQUIPMENT IS TURNED OFF OR OTHERWISE DISABLED.
Verify that the RF Output Port is properly connected to its intended load, antenna
or other device, having an appropriate RF power rating and a nominal input
impedance of 50 ohms.
4.8 Turn On
Perform the following procedure to energize the equipment:
a) Set the ON/OFF switch on the front panel to the ‘ON’ position. Verify that
the AC power indicator lamp is lit;
b) Enable the RF output of the source equipment.
CAUTION! To maintain specified performance and retain certain operating
characteristics, RF input power shall not exceed +3 dBm.

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INSTRUCTION MANUAL
ARI-6000-100W RF Power Amplifier

SECTION 4 - INSTALLATION
19121 El Toro Rd ●Silverado, California 92676 ●[phone] ●com-power.com
REV011718
4.9 Basic Operation
4.9.1 ON/OFF Switch
In the ‘ON’ position, AC power is supplied to the power amplifier.
4.9.2 AC Power Indicator Lamp
Illumination of the green AC power indicator lamp indicates proper
distribution of AC power throughout the power amplifier.
4.9.3 Fault Indicator Lamp
Illumination of the red FAULT lamp indicates that the internal temperature
exceeded 80º C, which automatically disables the DC bias voltage to the
main amplifier modules. In addition, a message indicating high
temperature will appear on the digital display on the front panel. The DC
bias voltage will automatically be restored once the temperature is less
than 75º C.
4.10 Turn Off
Turn off the RF power amplifier by first lowering or removing the RF Input drive level
and then placing the ON/OFF switch in the ‘OFF’ position.
WARNING In the event of ANY power failure; whenever possible and practical, it
is advisable to reset the ON/OFF switch on the front panel to the “OFF”
position before you reconnect AC power to the power amplifier. This
is to prevent any possible electrical damage to the amplifier, due to
the initial power surge, once power is restored.

Page 18 of 42
INSTRUCTION MANUAL
ARI-6000-100W RF Power Amplifier

SECTION 5 - OPERATION
19121 El Toro Rd ●Silverado, California 92676 ●[phone] ●com-power.com
REV011718
5.0 Operation
5.1 Front Panel Controller
5.1.1 Introduction
The front panel display operates in three distinct modes. The first mode is
called the Run Mode. This is the normal operation mode, where the
amplifier is controlled either by the front panel or via the GPIB/IEEE-488,
the RS-232 or RS-442 interfaces. The second mode is User Configuration. In
this mode, the end user can configure the system to more closely support
their needs. The final mode is the System Calibration mode. This mode that
is designed to be used only by an authorized technician. Within the
System Calibration mode, all aspects of the amplifier configuration and
calibration can be adjusted.
5.1.2 Controls and Display
The layout of the controls and display on the front panel is depicted in
Figure 4. A description of each of the controls and the display is
contained in Table 1 (page 19). General comments on the operation of
the controller are contained in Table 2 (page 20).
FIGURE 4 - Front Panel Display and Controls
5.1.3 Run Mode
When the unit first powers up, a self-test operation is conducted. If any
portion of the system is un-calibrated, or an error in the calibration data or
settings is encountered, an appropriate message will appear on the
display, and the unit will not power up. If the unit passes self-test, it will
place itself in the power up mode specified by the user in the User
Configuration; or. if no mode has been specified, in STANDBY with 0% Gain
(Voltage Variable Amplifier, or VVA) amplification.
MODE STBY ALC GAIN
FAULT
A
B C D E
F
G
..................... LINE 1 .....................
..................... LINE 2 .....................

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INSTRUCTION MANUAL
ARI-6000-100W RF Power Amplifier

SECTION 5 - OPERATION
19121 El Toro Rd ●Silverado, California 92676 ●[phone] ●com-power.com
REV011718
5.1.4 User Interface
There are six buttons used to control the amplifier. The first two buttons are
the UP and DOWN buttons, which are used to set values used by the
amplifier. The values that can be changed include the amplifier output
level (either specified in Gain % or dBm), and the VSWR alarm point.
The functions associated with each button are described in Table 1 in the
following section.
5.1.5 Display
The display is used in conjunction with the mode button to display the
current amplifier status. Pressing the MODE button cycles through all of the
status displays. See the tables later in this document for summaries of the
displays in the different operational modes.
Table 1 - Run-Mode Controls and Display Descriptions
Item Description Comments
A Display Displays information on command from the microprocessor based on
queries from the front panel control switches, IEEE interface, or from
fault detection circuitry.
B Mode Button Allows toggling thorough the following modes:
•Gain Control (Adjustable Output power)
•Forward and Reflected power
•Max Power (FWD, REV)
•VSWR Cut off (Fwd - Rev in dB)
•Gain (VVA) Voltage in %
•Monitors (8 inputs, If Applicable),
•IEEE-488 (GPIB) interface address
•Firmware revision
C Standby Button Places the amplifier in minimum gain mode (Gain/VVA @ 0% voltage).
The standby condition is indicated via the LED on Standby button.
D ALC Button Turns ALC (Automatic Level Control) mode ON and VVA (Variable
Voltage Attenuator) control mode (also known as the GAIN mode) OFF.
The ALC mode is on when the LED on ALC button is illuminated. This
button is used in conjunction with the UP/DOWN buttons to change the
ALC setting in 0.1 dB steps.
E Gain Button Turns VVA control mode ON and ALC mode OFF. ON is indicated when
the LED on GAIN button is illuminated. This button is used in conjunction
with the UP/DOWN buttons to change the Gain of the amplifier through
0.1% steps. Note that the percentage of gain is a relative function and
is not linear.
F & G Up and Down
Buttons
Controls gain of the amplifier when in the Gain mode and the output
level when in the ALC mode. These buttons manipulate various
parameters depending on the operating mode of the amplifier.

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INSTRUCTION MANUAL
ARI-6000-100W RF Power Amplifier

SECTION 5 - OPERATION
19121 El Toro Rd ●Silverado, California 92676 ●[phone] ●com-power.com
REV011718
Table 2 - General Notes on Operation
Item Description Comments
1 Default Power-Up
Setting
Standby ON (VVA @ 0% voltage), ALC OFF and GAIN ON. UP/DOWN
arrow keys adjust Gain of the amplifier in 0.1% steps. After adjusting to
desired power output, press Standby key once. Amplifier will display
actual power output and relative VVA voltage in percentage. Press
Standby key again and amplifier will again be in Standby mode.
2 Fault Conditions If fault occurs during normal operation, the information is shown on the
display and the red fault LED on the front panel illuminates. It also
reports the fault information via the IEEE-488 bus, RS-232 port and RS-422
ports, if queried. To clear a fault, after fault condition is repaired, push
the STBY button.
•High Temperature – Turns OFF bias voltage, illuminates red fault
LED and sends fault status condition to IEEE-488 bus, RS-232 port
, RS-422 port, and Ethernet Port if queried. A normal operating
condition will be only restored once the fault has been
removed and Standby has been pressed (to acknowledge
fault). MESSAGE: “Temp”.
•High power – The amplifiers are programmed to automatically
reduce the drive level if the forward, reverse or input power
levels exceed factory-set values. Message: “Fwd Pwr”, “Rev
Pwr”, or “Input Pwr”.
•High VSWR – The amplifiers are programmed to reduce output
power to a factory-set maximum reverse-power level under
high load VSWR conditions. As with all other faults, the
controller will illuminate the fault LED Message: “VSWR”.
•Monitors – Occurs when DC input(s) exceeds or falls below
configured levels. If configured for amplifier shutdown, the
controller turns OFF the bias voltage and illuminates the fault
LED. A normal operating condition will be only restored once
the fault has been removed and Standby has been pressed (to
acknowledge fault). If configured for Notification Fault, the
controller will only display the fault without affecting the current
control status of the amplifier. Message: “Mon X”, where “X” is
the number of the monitor that tripped.
•Uncalibrated - If EEPROM is damaged or has lost its' stored
data, front panel will indicate “Error – Calibrate” and the
controller will not be useable. Complete re-calibration will be
required Message: “Error – Calibrate”
3 Basic Operating
Instructions
Drive the amplifier with a nominal level indicated by the specifications
included with the specific model of amplifier.
Adjust the desired output level or the gain using the Set ALC or Set VVA
level function, respectively.