Aetechron 2110 User manual

2110/2120
Operator’s Manual
Gradient Ampliers
574.295.9495 | www.aetechron.com
2507 Warren Street, Elkhart, IN 46516

Limited One-Year Warranty
HOW TO OBTAIN WARRANTY SERVICE
When you notify us of your need for warranty service,
we will give you an authorization to return the product
for service. All components must be shipped in a factory
pack or equivalent which, if needed, may be obtained
from us for a nominal charge. We will take corrective ac-
tions within a reasonable time of the date of receipt of
the defective product. If the repairs made by us are not
satisfactory, notify us immediately.
DISCLAIMER OF CONSEQUENTIAL AND
INCIDENTAL DAMAGES
You are not entitled to recover from us any consequen-
tial or incidental damages resulting from any defect in
our product. This includes any damage to another prod-
uct or products resulting from such a defect.
WARRANTY ALTERATIONS
No person has the authority to enlarge, amend, or
modify this warranty. The warranty is not extended by
the length of time for which you are deprived of the use
of this product. Repairs and replacement parts provided
under the terms of this warranty shall carry only the
unexpired portion of this warranty.
DESIGN CHANGES
We reserve the right to change the design of any
product from time to time without notice and with no
obligation to make corresponding changes in products
previously manufactured.
LEGAL REMEDIES OF PURCHASER
There is no warranty that extends beyond the terms
hereof. This written warranty is given in lieu of any oral
or implied warranties not contained herein. We disclaim
all implied warranties, including, without limitation, any
warranties of merchantability or tness for a particular
purpose. No action to enforce this Warranty shall be
commenced later than ninety (90) days after expiration
of the warranty period.
AE Techron, Inc.
Customer Service Department
2507 Warren Street
Elkhart, IN 46516
U.S.A.
574.295.9495
www.aetechron.com
SUMMARY OF WARRANTY
AE TECHRON INC. of Elkhart, Indiana (Warrantor) war-
rants to you, the ORIGINAL COMMERCIAL PURCHASER
ONLY of each NEW AE TECHRON INC. product, for a
period of one (1) year from the date of purchase, by the
original purchaser (warranty period) that the product
is free of defects in materials or workmanship and will
meet or exceed all advertised specications for such a
product. This warranty does not extend to any subse-
quent purchaser or user, and automatically terminates
upon your sale or other disposition of our product.
ITEMS EXCLUDED FROM WARRANTY
We are not responsible for product failure caused by
misuse, accident or neglect. This warranty does not
extend to any product on which the serial number has
been defaced, altered, or removed. It does not cover
damage to loads or any other products or accessories
resulting from AE TECHRON INC. product failure. It does
not cover defects or damage caused by the use of unau-
thorized modications, accessories, parts, or service.
WHAT WE WILL DO
We will remedy, at our sole discretion, any defect in
materials or workmanship by repair, replacement, or
refund. If a refund is elected, you must make the defec-
tive or malfunctioning component available to us free
and clear of all liens or other encumbrances. The refund
will be equal to the actual purchase price, not includ-
ing interest, insurance, closing costs, and other nance
charges less a reasonable depreciation on the product
from the date of original purchase. Warranty work can
only be performed at our authorized service centers or
at our factory. Expenses in remedying the defect will be
borne by AE TECHRON INC., including one-way surface
freight shipping costs within the United States. (Pur-
chaser must bear the expense of shipping the product
between any foreign country and the port of entry in the
United States and all taxes, duties, and other customs
fees for such foreign shipments.)

DECLARATION OF CONFORMITY
Technical Construction File Route
Issued By: AE Techron, Inc. For Compliance Questions Only: Larry Shank
2507 Warren Street 574-295-9495
Elkhart, IN 46516 ls[email protected]om
This Declaration of Conformity is issued under the sole responsibility
of AETechron,Inc.,and belongs to the following product:
Equipment Type: Industrial Power Amplifiers
Model Name: 2110
EMC Standards:
EN 61326-1: 2013 –Electrical equipment for measurement, control and laboratory use
—EMC Requirements
EN 55011:2009+ A1: 2010 –Industrial, scientific and medical (ISM) radio-frequency equipment:
—Radio disturbance characteristics
—Limits and methods of measurement
EN 61000-4-2: 2009 –Electromagnetic compatibility (EMC) Part 4: Testing and measurement techniques:
Electrostatic discharge immunity test
EN 61000-4-3: 2006 + A2: 2010 –Electromagnetic compatibility (EMC) Part 4: Testing and measurement techniques:
Radiated radio-frequency electromagnetic field immunity test
EN 61000-4-4: 2004 + A1:2010 –Electromagnetic compatibility (EMC) Part 4: Testing and measurement techniques:
Electrical fast transient/burst immunity test
EN 61000-4-5: 2006 –Electromagnetic compatibility (EMC) Part 4: Testing and measurement techniques:
Surge immunity test
EN 61000-4-6: 2009 – Electromagnetic compatibility (EMC) Part 4: Testing and measurement techniques:
Immunity to conducted disturbances induced by radio frequency field
EN 61000-4-8: 2010 –Electromagnetic compatibility (EMC) Part 4: Testing and measurement techniques:
Power frequency magnetic field immunity test
Safety Standard:
BSEN61010-1:2010 (inc Corr. May 2011) –Safety requirements for electrical equipment for measurement, control, and laboratory use
I certify that the product identified above conforms to the requirements of the EMC Council Directive 2004/108/EC (until 19th April, 2016) and Directive
2014/30/EU (from 20th April, 2016), and the Low Voltage Directive 2006/95/EC (until 19th April, 2016) and Directive 2014/35/EU (from 20th April, 2016).
Signed:
Larry Shank Place of Issue: Elkhart, IN, USA
President Date of Issue: March 18, 2016
CE Affixing Date: March 4, 2011

DECLARATION OF CONFORMITY
Technical Construction File Route
Issued By: AE Techron, Inc. For Compliance Questions Only: Larry Shank
2507 Warren Street 574-295-9495
Elkhart, IN 46516 ls[email protected]om
This Declaration of Conformity is issued under the sole responsibility
of AETechron,Inc.,and belongs to the following product:
Equipment Type: Industrial Power Amplifiers
Model Name: 2120
EMC Standards:
EN 61326-1: 2013 –Electrical equipment for measurement, control and laboratory use
—EMC Requirements
EN 55011:2009+ A1: 2010 –Industrial, scientific and medical (ISM) radio-frequency equipment:
—Radio disturbance characteristics
—Limits and methods of measurement
EN 61000-4-2: 2009 –Electromagnetic compatibility (EMC) Part 4: Testing and measurement techniques:
Electrostatic discharge immunity test
EN 61000-4-3: 2006 + A2: 2010 –Electromagnetic compatibility (EMC) Part 4: Testing and measurement techniques:
Radiated radio-frequency electromagnetic field immunity test
EN 61000-4-4: 2004 + A1:2010 –Electromagnetic compatibility (EMC) Part 4: Testing and measurement techniques:
Electrical fast transient/burst immunity test
EN 61000-4-5: 2006 –Electromagnetic compatibility (EMC) Part 4: Testing and measurement techniques:
Surge immunity test
EN 61000-4-6: 2009 – Electromagnetic compatibility (EMC) Part 4: Testing and measurement techniques:
Immunity to conducted disturbances induced by radio frequency field
EN 61000-4-8: 2010 –Electromagnetic compatibility (EMC) Part 4: Testing and measurement techniques:
Power frequency magnetic field immunity test
Safety Standard:
BSEN61010-1:2010 (inc Corr. May 2011) –Safety requirements for electrical equipment for measurement, control, and laboratory use
I certify that the product identified above conforms to the requirements of the EMC Council Directive 2004/108/EC (until 19th April, 2016) and Directive
2014/30/EU (from 20th April, 2016), and the Low Voltage Directive 2006/95/EC (until 19th April, 2016) and Directive 2014/35/EU (from 20th April, 2016).
Signed:
Larry Shank Place of Issue: Elkhart, IN, USA
President Date of Issue: March 18, 2016
CE Affixing Date: March 4, 2011

Contents
1 Introduction....................................................................................................................................7
1.1 Features.............................................................................................................................7
2 Amplier Unpacking and Installation..............................................................................................8
2.1 Safety First.........................................................................................................................8
2.2 Unpacking..........................................................................................................................8
2.3 Installation..........................................................................................................................8
3 Connections and Startup ...............................................................................................................9
3.1 Other Operation Modes and Congurations ......................................................................9
3.2 Connecting the Load..........................................................................................................9
3.3 Connecting the Input Signal.............................................................................................10
3.4 Connecting the AC Supply ...............................................................................................11
3.5 Start-up Procedure...........................................................................................................12
4 Amplier Operation ......................................................................................................................13
4.1 Front-Panel Controls & Display........................................................................................13
4.2 Back-Panel Controls and Connectors..............................................................................18
5 Advanced Conguration...............................................................................................................20
5.1 Factory Defaults...............................................................................................................20
5.2 Accessing the Main Board ...............................................................................................20
5.3 Conguration Settings Located on the Main Board .........................................................20
5.4 Adjusting the Bi-Level Power Supply Switch ...................................................................23
6 Applications..................................................................................................................................24
6.1 Controlled Current Operation...........................................................................................24
6.2 Remote Status and Control using the SIM Interlock I/O Connector.................................28
6.3 Multi-amplier Systems....................................................................................................32
7 Maintenance ................................................................................................................................36
7.1 Clean Amplier Filter and Grills........................................................................................36
8 Troubleshooting ...........................................................................................................................37
8.1 Introduction & Precautions...............................................................................................37
8.2 Visual Inspection..............................................................................................................37
8.3 No Signal .........................................................................................................................38
8.4 No LEDs Illuminated or No Fans .....................................................................................38
8.5 OverVoltage Warning Message .......................................................................................38
8.6 Standby LED Remains Illuminated ..................................................................................38
8.7 Amplier Overheats (Over Temp Fault Condition) ...........................................................39
8.8 Fault LED is Illuminated...................................................................................................40
8.9 Factory Service................................................................................................................40
9 Specications...............................................................................................................................41

List of Figures
Figure 1.1 – 2110 Front Panel .......................................................................................................7
Figure 3.1 – Closeup of the Output Terminal Resistor .................................................................10
Figure 3.2 – Controlled Voltage Hookup ......................................................................................10
Figure 3.3 – Closeup of SIM card ................................................................................................10
Figure 3.4 – Input Select switch functions on the Input Terminals ...............................................11
Figure 3.5 – 208V 3-Phase AC Mains Wiring ..............................................................................11
Figure 3.6 – 380/400/415V 3-Phase AC Mains Wiring ................................................................11
Figure 4.1 – Push Buttons ...........................................................................................................13
Figure 4.2 – Main Status Indicators .............................................................................................14
Figure 4.3 – Main Status Indicators for Stand-Alone Ampliers...................................................14
Figure 4.4 – Main Status Indicators .............................................................................................15
Figure 4.5 – Fault Status Indicators for Stand-Alone Ampliers ..................................................15
Figure 4.6 – Main Status Indicators for Multi-Amplier Systems .................................................16
Figure 4.7 – Fault Status Indicators for Multi-Amplier Systems .................................................17
Figure 4.8 – Back Panel Controls and Connectors......................................................................18
Figure 5.1 – Master or Slave Setting ...........................................................................................20
Figure 5.2 – Gain Trim Control.....................................................................................................21
Figure 5.3 – Controlled-Voltage or Controlled-Current Mode Setting ..........................................21
Figure 5.4 – Compensation Setting .............................................................................................22
Figure 5.5 – Ready/Run Mode or Standby Mode on Power-Up Setting ......................................22
Figure 5.6 – Standby Mode on Overload Setting.........................................................................22
Figure 5.7 – Bi-Level Power Switch Location ..............................................................................23
Figure 6.1 – Input to Output Comparison, Controlled-Voltage Operation ....................................24
Figure 6.2 – Input to Output Comparison, Controlled-Current Operation ....................................24
Figure 6.3 – Factory-installed Default RC Network......................................................................25
Figure 6.4 – Custom Compensation Location..............................................................................27
Figure 6.5 – Compensation E󰀨ects on Waveform .......................................................................27
Figure 6.6 – Square Wave Showing a Decrease in R is Required ..............................................27
Figure 6.7 – Square Wave Showing an Increase in R is Required..............................................27
Figure 6.8 – Square Wave Showing an Increase in C is Required..............................................27
Figure 6.9 – Remote Status and Control Pinouts ........................................................................28
Figure 6.10 – Remote Status and Reset Schematic....................................................................29
Figure 6.11 – Remote Run/Standby Monitor................................................................................30
Figure 6.12 – Remote Enable/Standby........................................................................................31
Figure 6.13 – Remote Current Monitoring ...................................................................................31
Figure 6.14 – Remote Current Monitoring, Alternate Method ......................................................32
Figure 6.15 – Blanking Activation.................................................................................................32
Figure 8.1 – +Vcc and –Vcc Point Locations ...............................................................................37
Figure 8.2 – Amplier cover removed for inspection....................................................................37
Figure 8.3 – Fuse F1 Location.....................................................................................................38
Figure 8.4 – Interlock I/O Connector............................................................................................38
Figure 8.5 – +TEMP and -TEMP test point locations...................................................................39

97-2120001_7-8-19 Information subject to change 7
2110/2120 OPERATOR’S MANUAL – SECTION 1
1 Introduction
The AE Techron 2110 /2120 are high-power, DC-
enabled linear ampliers and integrated power
supplies that o󰀨er exceptional control of drift and
distortion. The 2110 /2120 function as a voltage
or current source, making them a great choice for
use in the lab or classroom. Their linear design
provides a very-low noise oor and fast current
rise times. Because the 2110 /2120 have no ripple
noise, no synching with the console is required.
The AE Techron brand is known throughout the
world for its robust, low-noise gradient ampliers
as well as its product service and support.
1.1 Features
• Output of up 200 amperes peak, 180 volts
(2120) or 110 amperes peak, 195 volts (2110).
• 4-quadrant linear design.
• Blanking feature lowers the noise floor on the
amplifier by shutting down the output stage.
This action occurs in less than 10 µs.
• Current mode response: –3 dB at 5 kHz (com-
pensation dependent); Voltage mode response:
DC-20 kHz at rated power.
• Robust, linear power supply results in extreme-
ly low noise; bi-level switch design limits heat
dissipation to output devices.
• Provides precision control of output offset, DC
drift and gain linearity.
• Protection circuitry guards against input over-
loads, improper output connection (including
shorted and improper loads), over-temperature,
over-current, and supply voltages that are too
high or low.
• Shipped ready to operate from 208-volt (±10%)
3-phase AC mains; 400-volt model available on
request.
Figure 1.1 – 2110 Front Panel

Information subject to change 97-2120001_7-8-19
2110/2120 OPERATOR’S MANUAL – SECTION 2
8
2 Amplier Unpacking and
Installation
The 2110 / 2120 ampliers are precision instru-
ments that can be dangerous if not handled prop-
erly. Lethal voltages are present in both the AC
input supply and the output of these ampliers. For
this reason, safety should be your primary concern
when you setup and operate this amplier.
2.1 Safety First
Throughout this manual special emphasis is
placed on good safety practices. The following
graphics are used to highlight certain topics that
require extra precaution.
with the following:
1. Toolkit (contains one 1/8-inch Allen drive and
three 2.7-ohm resistors)
2. NEMA connector for power cord
3. 2110 / 2120 Operator’s Manual and Quick Start
DANGER represents the most severe
hazard alert. Extreme bodily harm or
death will occur if these guidelines are
not followed. Note the explanation of the
hazard and instruction for avoiding it.
DANGER
WARNING alerts you to hazards that
could result in severe injury or death.
Note the explanation of the hazard and
the instructions for avoiding it.
WARNING
CAUTION indicates hazards that could
result in potential injury or equipment
or property damage. Once again, note
the explanation of the hazard and the
instructions for avoiding it.
CAUTION
2.2 Unpacking
All ampliers are tested and inspected for damage
before leaving the factory. Carefully unpack and
inspect the amplier for damage. Please note any
damage for future reference and notify the ship-
ping company immediately if damage is found.
Also, please save the shipping carton and materi-
als as evidence of damage and/or for returning the
amplier for repair.
Along with any additional accessories purchased
by the customer, all 2110 / 2120 ampliers ship
Never attempt to lift the amplier with-
out assistance. Crushing bodily injury
can result if care is not taken during
installation. Cabinets may overturn if
not secured.
WARNING
2.3 Installation
The 2110 / 2120 ampliers have rack “ears” on
each side of the front panel for mounting to a stan-
dard EIA (Electronic Industries Association) rack.
Use standard rack mounting hardware to mount
the amplier.
NOTE: The 2110 weighs approximately 103
pounds and the 2120 weighs approximately 153
pounds. Be sure this weight is properly supported
using all the screw locations.
When mounting the amplier in a rack cabinet,
the sidewalls of the rack must be at least 2 inches
away from the chassis on both sides.
Allow for hot air discharge through the amplier’s
rear grill. If your cabinet has a rear door, you must
provide adequate airow through the door. Pro-
vide a source of cool air for fan intakes. If the rack
is crowded or rack ventilation is poor, use a vent
tube to the outside of the rack. Cooling capacity
required is 300 ft3/min. total per amp.
When operating the MODEL 2110 / 2120 in a dusty
environment, use commercial furnace lters, or
equivalent, to prevent rapid clogging of the lters
on the amplier.
Do not operate the amplier in a small
sealed chamber of any kind. Improper
operations and overheating will result.
CAUTION

97-2120001_7-8-19 Information subject to change 9
2110/2120 OPERATOR’S MANUAL – SECTION 3
3 Connections and Startup
This section details the wiring and startup proce-
dures for a single 2110 or 2120 amplier operat-
ing in Controlled-Voltage mode (factory default).
Before connecting the amplier, make sure the AC
power is disconnected.
For Series operation in Controlled-Current
mode, you should select one amplier to be oper-
ated as the “Master” amplier of the system, and
then refer to the “Applications” section of this
manual for instructions on conguring this ampli-
er for operation in Controlled-Current mode. After
the Master amplier is congured and tested for
Controlled-Current operation, refer to the Multi-
Amp Conguration Guide (available for down-
load from aetechron.com) for information on Series
system conguration.
For Parallel operation in Controlled-Voltage
mode, refer to the Multi-Amp Conguration
Guide (available for download from aetechron.com)
for information on Parallel system conguration.
For Parallel operation in Controlled-Current
mode, please contact AE Techron Technical
Support for assistance.
3.2 Connecting the Load
3.2.1 Preparation and Cautions
Before connecting the amplier, make sure the
AC power is disconnected.
Connection to the output of the amplier is to a
four-position terminal barrier block (accepts up to
#4 AWG wire). Always use the appropriate wire
size and insulation for the maximum current and
voltage expected at the output. Never connect the
output of the amplier to any other model amplier,
power supply, signal source, or other inappropriate
load; re can result.
NOTE: The 2110 / 2120 amplier comes with a
factory-installed 2.7-ohm, 2W, 5%, metal-oxide re-
sistor connecting the terminals marked “SAMPLED
COMMON” and “CHASSIS GROUND” (see Figure
3.1). This resistor should NOT be removed.
WARNING: Removing this resistor can cause dan-
gerous output and/or damage to the load unless
the amplier is being used as a Slave amplier in
a Series multi-amp system. See the AE Techron
Multi-amp Conguration Guide for more infor-
mation on these advanced congurations.
ELECTRIC SHOCK HAZARD.
Output potentials can be lethal. Make
connections only with AC Power OFF
and input signals removed.
WARNING
3.1 Other Operation Modes and
Congurations
The 2110/2120 amplier can be eld-congured
for operation in a number of di󰀨erent ways. These
would include Controlled-Voltage or Controlled-
Current mode, and it also can be congured for
operation as a part of a multi-amplier system.
These alternate congurations may require special
output wiring and/or additional components.
3.1.1 Controlled-Current Operation of a
Stand-Alone Amplier
If your application requires Controlled-Current
operation, the 2110/2120 amplier rst should be
wired and tested in Controlled-Voltage mode to
verify that the amplier and input signal are operat-
ing correctly. Once proper operation is conrmed,
refer to the “Applications” section of this manual
for instructions on conguring and operating your
amplier in Controlled-Current mode.
3.1.2 Multi-Amp Operation
If your application requires multi-amp operation for
increased voltage or current, each amplier should
rst be wired and tested individually in Controlled-
Voltage mode to ensure proper operation.
For Series operation in Controlled-Voltage
mode, refer to the Multi-Amp Conguration
Guide (available for download from aetechron.
com) for information on Series system congura-
tion.

Information subject to change 97-2120001_7-8-19
2110/2120 OPERATOR’S MANUAL – SECTION 3
10
3.2.2 Connecting the Outputs
Locate the four-position terminal barrier block la-
beled OUTPUTS on the amplier back panel. See
Figure 3.2.
Connect the negative terminal of the load to the
SAMPLED COMMON terminal.
NOTE: Alternately, the COMMON terminal may be
used when operating in Controlled-Voltage mode;
Figure 3.3 – Closeup of SIM card
switch functions by connecting/ disconnecting the
inverting (–) pin on each input connector to the
amplier ground through a 4.7-ohm resistor (see
Figure 3.4). When the Input Select switch is in the
LEFT position, the shield on the BNC connector
and the inverting (–) pin on the terminal block con-
nector are tied to the amplier ground, allowing the
connectors to be used for Unbalanced input wiring.
When the Input Select switch is in the RIGHT
position, the inverting (–) pin on the terminal block
connector is oating, allowing the connector to be
used for Balanced input wiring.
IMPORTANT: The Input Select switch can also
function as a Ground Lift switch for the BNC
Figure 3.2 – Controlled Voltage Hookup
Figure 3.1 – Closeup of the Output Terminal Resistor
however, the integrated current monitor will not
function if the COMMON terminal is used, since
it depends on feedback from the Sampled Com-
mon terminal. For operation in Controlled-Current,
mode, the SAMPLED COMMON terminal must be
used.
Connect the load’s positive terminal to the ampli-
er’s OUTPUT terminal.
3.3 Connecting the Input Signal
The signal is connected to the amplier through a
“SIM” (Specialized Input Module) located on the
amplier back panel (see Figure 3.3). The SIM
card o󰀨ers the choice of BNC or terminal block
input connectors.
The Input Select switch, located on the SIM mod-
ule between the input connectors, allows conve-
nient selection of balanced or unbalanced input
wiring and also can function as a ground-lift switch
for the BNC input connector. The Input Select

97-2120001_7-8-19 Information subject to change 11
2110/2120 OPERATOR’S MANUAL – SECTION 3
Figure 3.4 – Input Select switch functions on
the Input Terminals
Input connector. If circulating currents/ground
loops/60-Hz Hum occur when using the BNC
Input, move the Input Select switch to the right
to lift the ground on the connector.
We recommend that you use cables that are high
quality and shielded to minimize noise and to
guard against possible feedback.
Note: See the “Applications” section for informa-
tion on using the Interlock – I/O Connector located
on the SIM card.
Figure 3.5 – 208V 3-Phase AC Mains Wiring Figure 3.6 – 380/400/415V 3-Phase AC Mains Wiring
The risk of lethal ELECTRICAL SHOCK
exists when connecting AC mains! Dis-
connect the source before connecting
AC power wires to the connector.
DANGER
3.4 Connecting the AC Supply
The 2110 / 2120 amplier requires 3-phase wir-
ing. Always operate the 2110 / 2120 amplier from
proper AC mains. The 3-phase, 47 - 60 Hz voltage
must be 208 VAC (or optionally 400 VAC) with no
more than 10% variance above or below the line
voltage. The amplier will not operate properly
outside these limits.
The 2110 / 2120 amplier includes a NEMA style
locking AC connector as standard equipment.
Connect the amplier to the proper 3-phase AC
mains with this connector. See Figures 3.5 and
3.6 for proper AC Mains wiring. The connector
then plugs into the 2110 / 2120 amplier.

Information subject to change 97-2120001_7-8-19
2110/2120 OPERATOR’S MANUAL – SECTION 3
12
3.5 Start-up Procedure
3.5.1 Voltage-Mode Operation
1. Turn down the level of your signal source.
2. Check to make sure the AC Mains Switch/
Circuit Breaker is in the o󰀨 position
(DOWN).
3. Apply AC power to the amplier.
4. Move the AC Mains Switch/Circuit Breaker
to the on position (UP) to turn the amplier
ON. Wait for the yellow READY and green
RUN LEDs to illuminate.
5. Adjust the level of your input signal source
to achieve the desired output level.
3.5.1 Current-Mode Operation
Before conguring your amplier for Current mode
operation, it is important to verify the amplier is
operating correctly in Voltage mode. Perform the
steps provided in the “Voltage-Mode Opera-
tion” Start-up Procedure to test the amplier in
Controlled-Voltage mode. Use care if your load is
very-low impedance since high currents can be
caused by low input levels. Then refer to the “Ap-
plications” section of this manual for instructions
on Controlled-Current conguration and operation.

97-2120001_7-8-19 Information subject to change 13
2110/2120 OPERATOR’S MANUAL – SECTION 4
4 Amplier Operation
4.1 Front-Panel Controls & Display
This section provides an overview of Front-Panel
controls and indicators found on the 2110 / 2120.
The Front Panel contains the following:
1. Push Buttons
2. Main Status Indicators
3. Fault Status Indicator
4.1.1 Push Buttons
The 2110/2120 provides three front-panel soft-
touch Push Buttons (see Figure 4.1):
Enable –For stand-alone ampliers, Enable will
release the amplier from Standby mode and
place the amplier in Run mode (both Ready and
Run LEDs will be lit). When the amplier is placed
in Run mode, the amplier will amplify the input
signal. If an amplier is disabled using a Remote
Standby application, the amplier will be placed in
Ready mode (both Ready and Standby LEDs will
be lit). To return the amplier to Run mode, release
the Standby condition using the remote switch.
See the “Applications” section of this manual for
more information on remote amplier operation.
By default, the amplier will automatically be
Enabled and enter Run mode on power-up. To
change the factory-default setting and congure
the amplier to power-up in Standby mode, please
see the “Advanced Conguration” section.
In multi-amp systems that have been congured
to start up in Run mode (factory default setting),
when an amplier is powered on, the amplier will
be placed in Ready mode (Ready and Standby
LEDs lit) and remain in Ready mode until all ampli-
ers in the system have been powered on. The
system will automatically proceed to Run mode
when all ampliers in the system are powered on
and achieve Ready mode.
In multi-amp systems that have been congured
to start up in Standby mode, when an amplier is
powered on, the amplier will be placed in Standby
mode (Stop and Standby LEDs lit). When the
Enable button is pressed on each amplier, that
amplier will be placed in Ready mode (Ready and
Standby LEDs lit) and remain in Ready mode until
all ampliers in the system have been Enabled.
The system will automatically proceed to Run
mode when all ampliers in the system achieve
Ready mode.
Stop – For stand-alone ampliers, Stop will place
the amplier in Standby mode (both Standby and
Stop LEDs will be lit). When the amplier is part of
a multi-amp system, pressing the Stop button on
any amplier in the system will place all ampliers
in Standby mode. When an amplier is in Standby
mode, the low-voltage transformer is energized but
the high-voltage transformers are not.
Reset – For stand-alone ampliers, when the am-
plier has stopped due to a fault condition, press-
ing the Reset button will return the amplier to Run
mode if the condition causing the fault condition
has been cleared. When the amplier is part of a
multi-amp system, pressing the Reset button on
the amplier reporting the fault condition will return
Figure 4.1 – Push Buttons

Information subject to change 97-2120001_7-8-19
2110/2120 OPERATOR’S MANUAL – SECTION 4
14
all of the ampliers to Run mode if the condition
causing the fault condition has been cleared; how-
ever, pressing the Reset button on other ampliers
in the system will NOT clear the fault condition.
4.1.2 Main Status Indicators
Four Main Status indicators are located on the am-
plier’s front-panel (see Figure 4.2). These LEDs
monitor the internal conditions of the amplier and
indicate the current state of operation. The chart in
Figure 4.3 details the operational modes indicated
by the Main Status indicators.
Figure 4.2 – Main Status Indicators
Figure 4.3 – Main Status Indicators for Stand-Alone Ampliers
Indicator is lit Indicator is not lit Indicator may be lit
Main Status
Indicators State of Operation Action Needed to Return to Run Mode
Run
Ready
Standby
Stop
Run mode: The amplier’s high-voltage transformers
are energized and the unit will amplify the input signal.
Run mode is initiated by: (1) the Enable push button, or
(2) when the amplier powers up in Run mode (factory
default). See the “Advanced Conguration” section for
more information.
N/A
Run
Ready
Standby
Stop
Standby mode: Standby mode indicates that the am-
plier is functioning properly and all Fault Status modes
are clear, but it is being held in Standby by an external
condition. As congured from the factory (Run mode on
startup), the amplier will enter Standby mode briey
after powering up, and then will move automatically into
Run mode. In Standby mode, the amplier’s low-voltage
transformer is energized but the high-voltage transformers
are not.
If the amplier remains in Standby mode,
it is being held in Standby by remote con-
trol through the SIM Interlock I/O connec-
tor. Open the Enable/Standby switch to
clear this remote Standby condition and
return the amplier to Run mode. See the
“Applications” section of this manual
for more information on remote amplier
operation.
Run
Ready
Standby
Stop
Stop mode: When the Stop button on the amplier front
panel is pressed, the amplier will enter Stop mode. The
amplier may also enter Stop mode after powering up if
the amplier is congured to enter Stop mode on startup.
In Stop mode, the amplier’s low-voltage transformer is
energized but the high-voltage transformers are not.
To release the amplier from Stop mode,
press the Enable button.
4.1.3 Fault Status Indicator
The Fault Status indicator is located on the ampli-
er front panel (see Figure 4.4). This LED moni-
tors the internal conditions of the amplier and will
illuminate when a fault condition occurs. Depend-
ing on the fault condition and the conguration of
the unit, the amplier may be placed in Standby
mode when a fault condition occurs. Refer to the
chart in Figure 4.5 to determine the fault condition
being indicated and the action required to clear the
fault condition.

97-2120001_7-8-19 Information subject to change 15
2110/2120 OPERATOR’S MANUAL – SECTION 4
Figure 4.5 – Fault Status Indicators for Stand-Alone Ampliers
Indicator is lit Indicator is not lit Indicator may be lit
Main Status
Indicators
Fault Status
Reported on
LCD Display State of Operation
Action Needed to Clear Fault
Condition and Return to
Run Mode
Run
Ready
Standby
Stop
WARNING!
OUTPUT
DEVICE FAULT
Output Device Fault: This indicates
that an Output Fault condition has oc-
curred and the amplier has been placed
in Standby mode. The Fault indicator
will light under two conditions: 1) High-
frequency oscillation is causing high
shoot-through current; or 2) An output
transistor has shorted, causing the output
fault condition.
This fault condition cannot be cleared
using the front-panel Reset button. See
the ”Troubleshooting” section for more
information on diagnosing and clearing this
fault condition.
Run
Ready
Standby
Stop
WARNING!
OVERLOAD
Overload: This indicates that the output
of the amplier could not follow the input
signal due to voltage or current limits. Un-
der normal operation with the factory-de-
fault settings, an Over Load condition will
not place the amplier in Standby mode.
If the amplier has been congured to
be forced to Standby on Over Load, the
amplier will be placed in Standby mode
when the Over Load indicator lights.
To remedy the Overload fault during
operation, turn down the level of the input
signal until the Fault indicator turns o󰀨. To
clear an Overload fault condition when the
amplier is forced to Standby, turn down
the level of the input signal, then push the
Reset button.
Run
Ready
Standby
Stop
WARNING!
OVERTEMP
Overtemp: The amplier monitors
the temperature inside the high-voltage
transformers, low-voltage transformer
and in the output stage heat sinks. The
Fault indicator will light and the amplier
will be placed in Standby mode when the
temperature sensors detect a condition
that would damage the amplier. If the
Overtemp pulse is extremely short, as in
the case of defective wiring or switches,
the Fault LED may be lit too briey to
observe.
To reset after an Over Temp fault has oc-
curred, make sure the amplier fans in all
ampliers are running, and then remove
the input signal from the system. Allow
the fans to run for about 5 minutes until
the system automatically returns to Run
mode. If the system has been congured
for Standby mode on Over Temp, then the
system will not automatically return to Run
mode. In that case, push and hold the Re-
set button on any amplier displaying the
Over Temp status until the Standby LED
turns o󰀨, then release the Reset button to
return the system to Run mode. Please
see the “Troubleshooting” section for
information on correcting the cause of an
Over Temp fault condition.
Run
Ready
Standby
Stop
WARNING!
OVERVOLTAGE
Overvoltage: This indicates that the
AC mains voltage is more than +10% of
nominal. The amplier will be forced to
Standby when an Overvoltage condition
occurs. When the Overvoltage condition
is cleared, the amplier will automatically
return to Run mode.
To clear an Overvoltage fault condition,
the AC mains must be brought down to
the nominal value. If the amplier does not
return to Run mode when the Overvolt-
age condition has cleared, the amplier
may require servicing. Please see the
”Troubleshooting” section for more
information.
Figure 4.4 – Main Status Indicators

Information subject to change 97-2120001_7-8-19
2110/2120 OPERATOR’S MANUAL – SECTION 4
16
4.1.4 Main Status Indicators for
Multi-amplier Systems
The Main Status indicators on each amplier in
a multi-amp system are used to determine the
operational status of the amplier. When evaluated
along with the statuses of other ampliers in the
system, the Main Status indicators can be used
to determine the system status and the action
required to return the system to Run mode. See
Figure 4.6.
4.1.5 Fault Status Indicators for
Multi-Amp Systems
The four Fault Status indicators located on each
amplier’s front panel are used to monitor the
internal conditions of the amplier and will illumi-
nate when a fault condition occurs. All ampliers
in the system may be placed in Standby mode
when a fault condition occurs, depending on the
fault condition and the conguration of the sys-
tem. Typically, the system can be released from
Figure 4.6 – Main Status Indicators for Multi-Amplier Systems
Indicator is lit Indicator is not lit Indicator may be lit
Main Status
of One or
More Amps in
the System
Main Status of
Other Amps in
the System State of Operation Action Needed to Return to Run Mode
Run
Ready
Standby
Stop
Run
Ready
Standby
Stop
Run mode: All of the ampliers in the
system are in Run mode. The ampliers’
high-voltage transformers are energized
and the system will amplify the input
signal.
N/A
Run
Ready
Standby
Stop
Run
Ready
Standby
Stop
Remote Standby Condition: All of
the ampliers in the system are being
held in Standby mode by an external
condition. In Standby mode, the ampli-
ers’ low-voltage transformers are ener-
gized but the high-voltage transformers
are not.
If the ampliers remain in Standby
mode, the system is being held in
Standby by remote control through the
SIM Interlock I/O connector. Open the
Enable/Standby switch to clear this
remote Standby condition and return
the system to Run mode. See the
”Applications” section of this manual
for more information on remote ampli-
er operation.
Run
Ready
Standby
Stop
Run
Ready
Standby
Stop
System Not Ready: If one or more
of the ampliers has no LEDs lit, the
amplier has no power or has not been
turned on, and the other ampliers in the
system will be held in Standby mode.
In Standby mode, the amplier’s low-
voltage transformer is energized but the
high-voltage transformers are not.
Make sure all ampliers have AC
power and have been turned on. When
all ampliers attain Standby status, all
ampliers in the system will simultane-
ously be placed in Run mode.
Run
Ready
Standby
Stop
Run
Ready
Standby
Stop
Stop mode: When the Stop button on
any amplier in the system is pressed,
that amplier will enter Stop mode and
all other ampliers will enter Standby
mode. The system may also enter Stop
mode after powering up if one or more
ampliers in the system is congured
to enter Stop mode on startup. In Stop
mode, the amplier’s low-voltage trans-
former is energized but the high-voltage
transformers are not.
To release the system from Stop mode,
press the Enable button on the ampli-
er displaying the Stop mode status.

97-2120001_7-8-19 Information subject to change 17
2110/2120 OPERATOR’S MANUAL – SECTION 4
Standby mode by pressing the Reset button on the
amplier displaying the Fault status. Refer to the
chart below to determine the fault condition being
Figure 4.7 – Fault Status Indicators for Multi-Amplier Systems
Indicator is lit Indicator is not lit Indicator may be lit
One or More Amps in System
Main Status
Indicators of
Other Amps
in System State of Operation
Action Needed to Clear
Fault Condition and Re-
turn to Run Mode
Main Status
Indicators
Fault Status
Reported on
LCD Display
Run
Ready
Standby
Stop
WARNING!
OUTPUT
DEVICE FAULT
Run
Ready
Standby
Stop
Output Device Fault sta-
tus: This indicates that an Out-
put Fault condition has occurred
in the amplier displaying the
Fault status, and the system has
been placed in Standby mode.
The Fault indicator will light
under two conditions: 1) High-
frequency oscillation is causing
high shoot-through current; or 2)
An output transistor has shorted,
causing the output fault condi-
tion.
This fault condition cannot be
cleared using the front-panel
Reset button. See the ”Trou-
bleshooting” section for more
information on diagnosing and
clearing this fault condition.
Run
Ready
Standby
Stop
WARNING!
OVERLOAD
Run
Ready
Standby
Stop
Overload status: This
indicates that the output of the
system could not follow the input
signal due to voltage or current
limits. Under normal operation
with the factory-default settings,
an Overload condition will not
place the system in Standby
mode. If the system has been
congured to be forced to Stand-
by on Overload, the system
will be placed in Standby mode
when the Fault indicator lights.
To remedy the Overload fault
during operation, turn down the
level of the input signal until
the Overload indicator turns
o󰀨. To clear an Overload fault
condition when the amplier is
forced to Standby, turn down
the level of the input signal,
then push the Reset button on
the amplier(s) displaying the
Overload status.
Run
Ready
Standby
Stop
WARNING!
OVERTEMP
Run
Ready
Standby
Stop
Overtemp status: Each am-
plier in the system monitors the
temperature inside the high-volt-
age transformers, low-voltage
transformer and in the output
stage heat sinks. The Overtemp
indicator will light and the system
will be placed in Standby mode
when the temperature sensors
detect a condition that would
damage the amplier system. If
the Overtemp pulse is extremely
short, as in the case of defective
wiring or switches, the Fault LED
may be lit too briey to observe.
To reset after an Overtemp
fault has occurred, make sure
the amplier fans in all ampli-
ers are running, and then
remove the input signal from
the system. Allow the fans to
run for about 5 minutes until the
system automatically returns to
Run mode. If the system has
been congured for Standby
mode on Overtemp, then the
system will not automatically re-
turn to Run mode. In that case,
push the Reset button on any
amplier displaying the Over-
temp status to return the system
to Run mode. Please see the
”Troubleshooting” section
for information on correcting
the cause of an Overtemp fault
condition.
indicated and the action required to clear the fault
condition and return the system to Run mode. See
Figure 4.7.

Information subject to change 97-2120001_7-8-19
2110/2120 OPERATOR’S MANUAL – SECTION 4
18
One or More Amps in System
Main Status
Indicators of
Other Amps
in System State of Operation
Action Needed to Clear
Fault Condition and Re-
turn to Run Mode
Main Status
Indicators
Fault Status
Reported on
LCD Display
Run
Ready
Standby
Stop
WARNING!
OVERVOLTAGE
Run
Ready
Standby
Stop
Overvoltage status: This
indicates that the AC mains
voltage is more than +10% of
nominal. All ampliers in the
system will be forced to Standby
when an Overvoltage condition
occurs. When the Overvoltage
condition is cleared, the system
will automatically return to Run
mode.
To clear an Overvoltage fault
condition, the AC mains must
be brought down to the nomi-
nal value. If the system does
not return to Run mode when
the Overvoltage condition has
cleared, one or more ampliers
may require servicing. Please
see the “Troubleshooting”
section for more information.
4.2 Back-Panel Controls
and Connectors
This section provides an overview of Back-Panel
controls and connectors found on the 2110/2120
amplier. Please refer to Figure 4.8 for visual loca-
tions.
AC Power Connector - This is a NEMA style twist
lock, 4 pin (208V) or 5-pin (400V), three-phase
connector. See page Error! Bookmark not dened.
for terminal connections.
Low-Voltage Fuse - This is a 1Aslow blow type
600-volt rated fuse.
Figure 4.8 – Back Panel Controls and Connectors
AC Mains Switch/Circuit Breaker - This dual
function power switch and circuit breaker opens all
legs of the AC mains. The rating is 20A (2110) or
30A (2120) for 208 volts.
Output Terminal Block - Connect output lines
from the load to this 4-terminal block. It accepts up
to #4 AWG wire. Drive the load in the Controlled
Current mode using the OUTPUT terminal and the
SAMPLED COMMON terminal only.
BNC Input Connector - This input option provides
a standard unbalanced input.

97-2120001_7-8-19 Information subject to change 19
2110/2120 OPERATOR’S MANUAL – SECTION 4
Input Selector Switch - When the Input Select
switch is in the LEFT position, the shield on the
BNC connector and the inverting (–) pin on the
terminal block connector are tied to the amplier
ground through a 4.7-ohm resistor, allowing the
connectors to be used for Unbalanced input wir-
ing. When the Input Select switch is in the RIGHT
position, the inverting (–) pin on the terminal block
connector is oating, allowing the connector to be
used for Balanced input wiring. The Input Select
switch also functions as a Ground Lift switch for
the BNC input connector.
Terminal Block Input Connector - This input op-
tion provides a balanced input.
Interlock Connector - This 25-pin, D-sub connec-
tor is used for interlocking and combining functions
in a multi-amp system. It can also be used for re-
mote control and monitoring applications (see the
”Applications” section for more information).

Information subject to change 97-2120001_7-8-19
2110/2120 OPERATOR’S MANUAL – SECTION 5
20
5 Advanced Conguration
The 2110/2120 amplier was designed to o󰀨er
exceptional power and versatility in operation. You
can choose from a range of eld-congurable op-
tions, including:
• Operate as a stand-alone amplifier or as part of
a multiple-amplifier system.
• Trim the overall gain of the amplifier.
• Select Controlled-Current or Controlled-Voltage
modes of operation.
• Adjust the Compensation for Controlled-
Current mode of operation.
• Standby Mode/Ready Mode setting for selec-
tion of power-up state.
• Stop on Overload setting to trigger Standby
Mode when amplifier senses an Overload state.
5.1 Factory Defaults
Your 2110/2120 amplier has been congured to
operate to the following factory defaults:
• Controlled-Voltage mode
• Master/ Single mode
• CC1 Compensation network
• Power-Up into Ready mode
• Stop Mode on Overtemp disabled
• Stop on Overload disabled
If you need to make changes to your amplier’s
conguration, please follow the instructions con-
tained in this chapter.
5.2 Accessing the Main Board
The 2110/2120 amplier Main Board can be ac-
cessed by removing the amplier front panel.
IMPORTANT: Before removing the Front Panel,
make sure the amplier is turned o󰀨 for at least 3-5
minutes and the AC mains are disconnected.
1. Turn the power to the amplier “OFF”.
2. Remove the four hex-head screws, located
along the left and right edges of the amplier
front panel using a Torx T15 driver.
3. Remove the front cover by pulling straight
towards you.
5.3 Conguration Settings Located on
the Main Board
The following custom settings can be made via
settings on the Main Board, which is located be-
hind the amplier front panel.
5.3.1 Master or Slave Setting
The 2110/2120 amplier can be congured for op-
eration within a multi-amplier system, with up to
four ampliers congured for series or parallel op-
eration. To enable the 2110/2120 amplier for use
as a Slave amplier in a multi-amplier system,
adjust the jumper settings on Jumpers P1 and
P2 by placing BOTH jumpers in the DOWN posi-
tion (lower pair of pins). To enable the 2110/2120
amplier for use as a single amplier or as the
Master amplier in a multi-amplier system, ad-
just the jumper settings on Jumpers P1 and P2 by
placing BOTH jumpers in the UP position (upper
pair of pins). See Figure 5.1.
Do not attempt to access the Main Board
while the amplier is running. Turn the
amplier o󰀨 and disconnect the AC
Mains before removing the amplier
front panel.
WARNING
After turning the amplier o󰀨, let the unit
sit for 3-5 minutes before removing the
front panel. This will allow the electrical
charge in the Power Supply capacitors
to discharge.
CAUTION
Figure 5.1 – Master or Slave Setting