Analog Devices Hittite HMC-T2220 User manual

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HMC-T2200 Synthesized Signal Generator Family
HMC-T2220/40/70
HMC-T2220B
HMC-T2220/40/70
HMC-T2220B
131302 Rev H - v07.0512
User Manual
Installation, Operation & Maintenance Guide
for HMC-T2220, HMC-T2220B, HMC-T2240, and HMC-T2270
Analog, Digital & Mixed-Signal ICs, Modules, Subsystems & Instrumentation
2 Elizabeth Drive • Chelmsford, MA 01824
978-250-3343 tel • 978-250-3373 fax • [e-mail]
Order On-Line at: www.tm-hittite.com
Receive the latest product releases - click on “My Subscription”
ECN# CP120624

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HMC-T2200 Synthesized Signal Generator Family User Manual
Notice
Hittite Microwave Corporation has prepared this manual for use by Hittite personnel and customers as a
guide for the proper installation, operation, and maintenance of Hittite equipment and computer programs.
The drawings, specications, and information contained herein are the property of Hittite Microwave Corpora-
tion, and any unauthorized use or disclosure of these drawings, specications, and information is prohibited;
they shall not be reproduced, copied, or used in whole or in part as the basis for manufacture or sale of the
equipment or software programs without the prior written consent of Hittite Microwave Corporation.
Table of Contents
1. Introduction............................................................................3
2. Package Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
3. General Overview of Instrument Capabilities ................................................4
4. Installation of Equipment and Safety .......................................................4
4.1 Safety Precautions for Lithium Ion Battery Packs (HMC-T2220B) ..............................5
4.2 Safety Features of the HMC-T2220B. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
5. Operation and Setup.....................................................................7
5.1 Equipment Setup and Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
5.2 Hardware Interfaces. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
5.3 Environmental Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
5.4 Fan Air Inlets ...................................................................... 15
5.5 GUI Instrument control...............................................................15
5.6 Software Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
6. Maintenance ..........................................................................20
6.1 Instrument Calibration ...............................................................20
6.2 Field Power Calibration ..............................................................21
6.3 External Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
7. Programming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
8. Technical Support......................................................................30
9. Warranty. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
10. Appendix ............................................................................31

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1. Introduction
This User’s Manual describes the HMC-T2200 Synthesized Signal Generator Family units (SG). Most of the
pertinent information can be quickly located through the table of contents and highlighted sections.
The following conventions and indicators are used in this user’s guide:
This indicator calls attention to critical or important information, concerning an operation or
maintenance procedure or practice, which if not strictly followed and observed, could potentially
result in serious injury to operating personnel. An example is the proximity of high AC line voltage.
This indicator draws attention to a situation relating to the equipment set-up, operating or
maintaining the equipment, which if not observed, could result in permanent damage to sensitive
microwave devices or other electronic components.
This indicator highlights a required equipment preparation, fundamental procedure, practice,
condition or statement. Other indicators in bold Blue capital lettering emphasize important points
of information, input or output connections and signal generator specication headings.
The following nomenclature is affixed to the signal generator front and back panels:
HITTITE MODEL NUMBER: HMC-T2200 four-digit alphanumeric, front panel.
This user’s guide should be thoroughly read in depth and reviewed again completely before
attempting to unpack, install or operate the SG unit.
2. Package Contents
The SG unit and packaging material weigh approximately 8 lbs. Before unpacking, check for any
physical damage to the shipping container. If any noticeable damage is observed, immediately
contact Hittite Microwave Corporation. Carefully open the shipping container and inspect the SG
unit for any visible signs of damage. Save the shipping container to repackage the SG unit, or
for submitting necessary damage claims to the transporter. Remove the documentation packet
and any other separately supplied components before attempting to remove the SG unit from the
shipping container. It is highly recommended as a preventative measure, to exercise antistatic
safeguards when handling the SG unit.
Verify that all of the following components are included with the shipment:
Item Quantity
HMC-T2220(B)/40/70 Signal Generator 1
AC Wall Power Supply 1
AC Power Cord 1
CD ROM (Contains User manuals and software) 1
Calibration Certicate 1
HMC-T2200 Family Quick Start Guide 1
LI-ION Battery Packs (HMC-T2220B only) 2
Table 1. Packing List

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3. General Overview of Instrument Capabilities
The HMC-T2220(B), HMC-T2240, and HMC-T2270 Synthesized Signal Generators are single output
frequency synthesizers with 10 MHz to 20 GHz, 10 MHz to 40 GHz, and 10 MHz to 70 GHz bandwidths
respectively. The HMC-T2220B is a portable synthesizer which will operate for 4 hours from internal batteries,
and charge the batteries when operated from AC power. The block diagram for this unit is shown in gure
1. This unit provides one RF output channel with programmable output frequency and output power. The
output frequency is programmable over the specied frequency range, in 1 Hz increments. The synthesizer
provides an internal 10 MHz reference source which can be overridden by an external source. An AC wall
type power supply is provided to generate the required DC power for the unit. The detailed performance
specications for the synthesizers are listed in the datasheet on the Hittite website.
The user may control the frequency, power, and RF Standby functions from either the Front Panel or the
peripheral interfaces which include a USB, Ethernet and GPIB interface. The RF Standby function will
apply the maximum attenuation to the RF output.
10 MHz
REFIN
10 MHz
REFOUT
RF
OUT
FRONT PANEL
I/O
I/O
CONTROLLER
SYNTHESIZER
SYNTHESIZER
CONTROLLER
POWER
CONTROL
10 MHz
TCXO
PLL
+12 VDC
GPIB
ENET
USB
RS232
Trigger In
Trigger Out
PLL
Figure 1. HMC-T2220/40/70 Block Diagram
4. Installation of Equipment and Safety
The guidelines shown below must be followed for proper installation of the SG equipment:
• TheSGequipmentwasdesignedforLABORATORY USE ONLY and is not protected against
moisture.
• Utilize appropriate ESD handling procedures and precautionary measures when installing this
equipment.
• TheSGunitisintendedforplacementonalaboratoryworkbench.
• Duringinstallmakecertaintherearenoobstructionsthatwouldimpedeairowtotheventingof
the unit on the sides of the enclosure, or the fans located on the rear panel.
• EnsurethatallexternalcomponentsandRF/microwavecoaxialcablesareinpropercondition.

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• Agrounded,threepinACpowerreceptacleshallbeusedtoconnectpowertotheACwallpower
supply. It is recommended that the ON/OFF power switch on the front panel be used to interrupt
power to the unit. Interrupting power by pulling out the AC cord may result in injury or unit damage.
• ThedetachableACpowercord,andthepowerswitchonthefrontpanelmustbeeasilyaccessible
to facilitate removal of power from the unit.
• VerifythefacilityAClinevoltageiswithinspecicationsbeforeapplyingpowertotheunit,orthe
applied DC power source is within the specications of the unit. See paragraph. 5.2.6 to determine
the acceptable input AC voltage, and frequency range.
• TheDCpowerconnectorhasGNDpinswhichconnecttothechassis.Bothofthesemust be
connected to GND for safe operation of the unit.
4.1 Safety Precautions for Lithium Ion Battery Packs (HMC-T2220B)
WARNING:
These safety instructions and the separately provided instructions of the battery manufacturer must be
read carefully and must be fully understood before attempting use. Misusing the battery may cause the
battery to get hot, rupture, ignite, or explode. Be sure to follow all of the safety rules listed below. Failure
to do so may cause serious injury or damage to equipment.
CAUTION
• Use only battery packs supplied by Hittite Microwave Corporation in the HMC-T2220B.
• Remove batteries when packaging the unit for shipment.
• Do not place the battery on or near res, stoves, or other high-temperature locations, as that could
cause the battery to rupture, ignite or explode.
• Do not install the battery backwards so that the polarity is reversed.
• Do not connect the positive terminal and the negative terminal of the battery to each other with any
metal object (such as wire), as a short circuit and resulting re of batter damage may occur.
• Do not carry or store the batteries together with necklaces, hairpins, or other metal objects, as a
short circuit and resulting re of batter damage may occur.
• Do not pierce the battery with nails, strike the battery with a hammer, step on the battery, or
otherwise subject it to strong impacts or shocks.
• Do not solder directly on the battery.
• Do not expose the battery to water or salt water, or allow the battery to get wet.
• Do not disassemble or modify the battery. The battery contains safety and protection devices
which, if damaged, may cause the battery to generate heat, rupture or ignite.
• Do not place the battery in direct sunlight or store the battery inside cars in hot weather. Doing so
may cause the battery to generate heat, rupture, or ignite. Using the battery in this manner may also
result in a loss of performance and a shortened life expectancy.
• Do not discharge the battery using any device other than the HMC-T2220B synthesized signal
generator. If the battery is used in devices aside from the specied device it may affect the perfor-
mance of the battery or reduce its life expectancy, and if the device causes an abnormal current to
ow,itmaycausethebatterytobecomehot,rupture,origniteandcauseseriousinjury.

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• Always keep the battery pack out of reach of infants or small children.
• Do not place the battery in microwave ovens, high-pressure containers, or on induction cookware,
as this could cause the battery to get hot, rupture, ignite or explode.
• Intheeventthatthebatteryleaksandtheuidgetintoone’seye,donotrubtheeye.Rinsewell
withwaterandimmediatelyseekmedicalcare.Ifleftuntreatedthebatteryuidcouldcausedamage
to the eye.
• Use of the battery outside the specied devices operating temperature range may damage the per-
formance of the battery or may reduce its life expectancy.
• When charging the battery, use only the HMC-T2220B or a specied battery charger ensuring that
the battery charging conditions specied are met.
• Do not attach the battery to a power supply plug or directly to a car’s cigarette lighter.
• Do not continue charging the battery if it does not recharge within the specied charging time. Do-
ing so may cause the battery to become hot, rupture, or ignite.
• The temperature range over which the battery can be charged is +5°C to +35°C. Charging the bat-
tery at temperatures outside of this range may cause the battery to become hot or to break. Charg-
ing the battery outside of this temperature range may also harm the performance of the battery or
reduce the battery’s life expectancy.
• Immediately discontinue use of the battery if, while using, charging, or storing the battery, the bat-
tery emits an unusual smell, feels hot, changes color, changes shape, or appears abnormal in any
other way.
• Never dispose of used battery packs with other solid wastes, since they contain toxic substances.
Always dispose of used battery packs in accordance with the prevailing community regulations that
apply to the disposal of batteries. Cover the metal terminals with insulating tape in order to prevent
accidental short-circuiting, and hence possible heating and re, when disposing of the battery.
4.2 Safety Features of the HMC-T2220B
The HMC-T2220B contains 2 thermal shutdown features to protect the batteries from a potentially un-safe
operating condition caused by over-temperature. One feature is implemented within the software, and the
second feature is implemented with a thermal switch. The thermal switch is implemented as a backup
mechanism for the software. In the majority of cases it is expected that the software will disable the output
from the batteries.
4.2.1 Software Controlled Thermal Shut-down
The microcontroller, located on the battery charger board, monitors the temperature during normal
operation. If the temperature becomes higher than the shutdown temperature threshold (50 deg. C), the
microcontroller disables the power output from the battery. In the event that this shutdown condition has
been triggered, after allowing the unit to cool down, the user can recover by performing one of the following
actions:
1. Remove and replace the batteries.
2. Connect the external 12V DC power supply to the unit, turn on the 12V DC power supply, and turn on
the synthesizer using the front panel power switch.

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4.2.2 Thermal Switch Controlled Shut-down
The thermal switch when activated, will disable the power output from the battery. The thermal switch has
a nominal temperature threshold of 65 deg. C. In the event that this switch is activated it may be reset by
pressing the reset button located in the battery compartment. See the photograph below which identies
the location of the thermal switch.
Figure 2. View of thermal switch reset button in T2220B battery compartment
5. Operation and Setup
The SG unit control features and setup are detailed in this section.
5.1 Equipment Setup and Operation
Before the SG unit can be operated, external coaxial cables, equipment and instrumentation are
required to be set-up. The instruction steps listed below must rst be completed:
1. Use appropriate ESD precautions when connecting cabling, and external equipment to the
HMC-T2220/40/70, and HMC-T2220B Signal Generators.
2. Verify that the front panel power switch is switched to the “OFF” (Button not depressed) position.
3. Connect DC power cable to rear panel (DIN style DC power connector).
4. Ensure that the ON/OFF switch on the AC power adapter is in the OFF position.
5. Connect the AC power cable to an appropriate 3 prong AC receptacle.
6. Place the ON/OFF switch on the AC power adapter in the ON position. The LED indicator located on
the adapter should be illuminated green in this condition.
7. Connect the RF output to the peripheral equipment using a compatible connector. See below:

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Model Connector
HMC-T2220 SMA (F)
HMC-T2240 2.92 mm (F)
HMC-T2270 1.85 mm (F)
Table 2. RF Connectors
8. If desired, connect the USB, GPIB, or Ethernet connectors to the Host PC or equivalent.
9. If desired, connect the appropriate BNC connectors to external equipment to provide an external 10
MHz reference.
10. If desired, connect the 10 MHz reference input to external equipment.
11. If desired, connect the appropriate BNC connectors to external equipment to provide trigger functions.
12. Press the front panel power switch to the “ON” (labeled 1) position.
13. It is recommended that the user allows a minimum of 30 minutes warm-up time before using the
instrument.
14. Verify the unit is powered on by monitoring the front panel LCD display.
15. Using either the Front Panel Controls or the peripheral interfaces, control the operation of the SG.
5.2 Hardware Interfaces
The front panel of the unit contains a multi-function rotary knob, an RF Standby switch, power On/Off
switch, LCD display, and the connector for the RF output. See gure 2 for a view of the front panel. The
rear panel of the unit contains the connectors for the External Reference Input, Reference Output, Trigger
In, Trigger Out, DC power, GPIB, Ethernet, and USB interface. See gure 3 for a view of the rear panel.
Figure 3. Front Panel View (Front panel may be labeled differently per unit)

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Figure 4. Rear Panel View (Rear panel may be labeled differently per unit)
5.2.1 RF Output Standby
The RF output connector is located on the front panel. The RF output may be commanded to the Standby
State by either the RF Standby switch on the front panel, or by commanding the unit via one of the
peripheral interfaces. When in the Standby State, the output power attenuators are set for maximum
attenuation. The RF output specications are located in the data sheet on the Hittite website. Please
note that while the SG unit is in the Standby state, there is still a minimal level of RF power at the signal
generator RF output.
5.2.2 Front Panel Rotary Control Knob
The large rotary knob on the front panel is used to control the synthesizer’s frequency and power output.
When the knob is depressed it will cycle through its two functions. One function selects the frequency or
power eld that the user wants to adjust. The second function allows the user to adjust the value of the eld
by turning the knob. The frequency and power adjustment elds consist of the following:
1. Increment/Decrement frequency with 1 Hz steps
2. Increment/Decrement frequency with 10 Hz steps
3. Increment/Decrement frequency with 100 Hz steps
4. Increment/Decrement frequency with 1 kHz steps
5. Increment/Decrement frequency with 10 kHz steps
6. Increment/Decrement frequency with 100 kHz steps
7. Increment/Decrement frequency with 1 MHz steps
8. Increment/Decrement frequency with 10 MHz steps
9. Increment/Decrement frequency with 100 MHz steps
10. Increment/Decrement frequency with 1 GHz steps
11. Increment/Decrement Output Power with 0.1 dB steps
12. Increment/Decrement Output Power with 1.0 dB steps
The front panel knob is also used to access alternate LCD display menus. These menus may be accessed
by pressing and holding the knob for 1.5 seconds. To navigate through the alternate menus the user will
rotate the knob to select the eld of interest, and then depress the knob to select. To return to a previous
menu, select “BACK” and depress the knob. To return to the main LCD display, press and hold the knob
for 1.5 seconds. See paragraphs 5.2.2.1 through 5.2.2.7 for additional information.

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Note: When the front panel controls have been locked out due to computer commands via one of the
peripheral interfaces, the rotary knob may be depressed for approximately 1.5 seconds to re-enable
front panel controls, and disable computer controls, unless the Lockout command is in effect. See the
Programmers Guide.
5.2.2.1 GPIB Address Menu
The GPIB address can be set to a value of 0 through 30 using either the front panel knob or SCPI
commands (See the Programmer’s Guide).
5.2.2.2 Ethernet Conguration Menu
The following Ethernet parameters may be congured via the front panel knob or SCPI commands
(See the Programmer’s Guide). Conguration through the front panel is available in SW Version 2.3
and greater.
1. DHCP: ON/OFF
2. IP Address
3. Network Mask
4. Port Number
5.2.2.3 T2100 Compatibility Mode Menu
Any HMC-T22XX containing SW Version 2.2 or greater can be set to T2100 Compatibility Mode via
SCPI commands (See the Programmer’s Guide) or the front panel knob (SW Version 2.3 and up).
When a unit is set to T2100 Compatibility Mode, the unit’s frequency resolution, maximum output
power, minimum output power, and minimum dwell time (sweep timing) will change to be consistent
with that of the HMC-T2100. While in T2100 Compatibility Mode, any changes to these parameters
using the front panel display and knob will likewise be limited to the capabilities of the HMC-T2100.
While in this mode, the unit will identify itself as an HMC-T2100.
5.2.2.4 Battery Status Display (HMC-T2220B)
The rst line of battery status displays the Percent Charged for each battery installed. The second
line of status contains one of the following: Time Remaining (Operating from battery power), Time
to Fully Charged (Batteries charging), blank line (Either fully charged, or time remaining is zero).
This display is updated once a second. Note that if the battery charger changes modes (charging,
discharging) while this screen is displayed, it will typically take multiple screen updates before the
second status line has settled. This information is also accessible using SCPI commands (See the
Programmer’s Guide). This information is available for SW Versions 2.3 and greater.
5.2.2.5 Serial Number and Software Version Display
This menu displays the Serial Number of the unit, Software Version number, Firmware Version number,
and Battery Controller Software Version number. Battery Controller Software Version is available in
Software Version 2.3 and greater.

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5.2.2.6 Output Blanking
”Output Blanking” On/Off enables or disables Output Blanking. While the output frequency is changing,
the output is attenuated if it’s enabled, the output is not attenuated if it’s disabled. This feature is
supported for Software Version 2.3 and greater and FPGA Version 4.6 and greater.
5.2.2.7 Temp Compensation
”Temp Compensation” On/Off enables or disables Temperature Compensation. When the Temperature
Compensation is enabled, the software will adjust the output power based on the synthesizer’s internal
temperature, so the output power will stay relatively stable. This feature is supported for SW Version
2.4 and greater and FPGA Version 5.1 and greater.
5.2.3 Front Panel Frequency & Power LCD Display
5.2.3.1 Main Screen
At power turn-on the LCD will display the units Serial Number, Model Number, as well as the rmware
revision. Sometime thereafter the LCD will change to display its operational state. The operational
state provides the information listed in the Table below.
Function Units Comments
Frequency Hz Output Frequency
RF Output Power dBm Commanded Output Power
RF Status N/A Output ON or OFF
Unit Status N/A L – PLL loss of lock
R – Remotely controlled via one of the peripheral
interfaces.
Reference Source N/A I (Internal) E (External)
Selected Function Indicator N/A Underlined character indicates which eld the rotary
knob controls frequency or power, and this determines
the resolution step size.
RF Power Status N/A Blank – Output Power Leveled
C- Calibration Error
* - Commanded power is out of range
Fan Failure N/A “Fan Fault” is displayed
Over Temperature N/A “Over Temperature Fault” is displayed
Battery Status (HMC-T2220B only) N/A PRSNT BATTERY PRESENT
CHRG BATTERY CHARGING
LOW BATTERY LOW
Table 3. Front Panel Display

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5.2.3.1.1 Front Panel Power Level Status
The HMC-T2220/40/70, and HMC-T2220B includes a power level indicator on the Front Panel display
which can be monitored by the user to determine if the output power specied by the user is within
the instruments calibrated output range (See the data sheet). When the instrument is commanded to
a Frequency and Power combination which is beyond the units specied calibration range, the “ * ”
indicator will appear on the display.
Figure 5.HMC-T2220/40/70 and HMC-T2220B Un-calibrated Output Power Indicator
(Front panel may be labeled differently per unit)
5.2.4 Computer Peripheral Interfaces
The synthesizer’s status and programmable functions are identied in the Programmer’s guide document.
5.2.4.1 USB Interface
The USB connector is located on the rear panel. The USB interface is compliant with USB 1.1, and USB
2.0. The mating connector for this unit is a USB Series B plug style connector.
5.2.4.2 Ethernet Interface
The Ethernet connector is located on the rear panel. The mating connector is a standard RJ-45 plug
style connector. The Ethernet interface is a 10/100 Base T interface.
5.2.4.3 GPIB Interface
The GPIB connector is located on the real panel. The mating connector is a standard 24 pin male
connector. The GPIB interface is compliant with IEEE 488.2.
5.2.4.4 RS232 Interface
The RS-232 connector is a modular phone jack. This interface is not recommended because of its
speed, but is informally supported for customers wishing to control the T2200 from a microcrontroller or
FPGA. Please contact Hittite for pinout and other information.
5.2.5 Trigger In
The Trigger In, is an input only signal which connects to a BNC connector on the rear panel. This input is
compatible with TTL signal levels. When the external trigger is enabled by software, the rising edge of the
signal will trigger a sweep function. See the Programmers Guide for more information.
5.2.6 Trigger Out
The Trigger Out, is an output only signal which connects to a BNC connector on the rear panel. This output
is compatible with TTL signal levels. See the Programmers Guide for more information.
*

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5.2.7 External Reference/Internal Reference
5.2.7.1 Internal Reference Out
The HMC-T2220/40/70, and HMC-2220B Signal Generator includes an internal precision 10 MHz
reference. The performance of this reference output is specied in the datasheet on the Hittite website.
The 10 MHz reference output is located on the rear panel BNC connector.
5.2.7.2 External Reference In
The internal reference can be overridden by connecting an external reference to the BNC connector
located on the rear panel. The unit automatically detects and uses the external reference if present,
unless overriden by the ROSC commands (see the Programmers Guide).
5.2.8 Power Input
The unit is powered using the supplied AC wall supply.
5.2.8.1 AC Power adapter
The AC power adapter will operate from a single phase AC source of 100 to 240 VAC, with a frequency
of 47 - 63 Hz. The AC power adapter automatically adjusts to the connected power source. A power
cable is provided with each unit. The appropriate cable must be selected from the available options in
the data sheet when ordering. The AC power adapter contains a power switch, and a power on indicator
LED.
5.2.8.2 Power On/Off
Power is turned On/Off with the switch located on the front panel of the enclosure.
5.2.9 Battery Unit (HMC-T2220B)
The HMC-T2220B can be tted with single or dual Lithium-Ion battery packs which make it independent of
an external power source. The unit can be operated for approximately 2 hours with a single battery, and up
to 4 hours with 2 batteries before the battery packs require recharging. Status indicators on the front panel
display monitor the battery status. The battery packs inside the HMC-T2220B will be charged whenever the
external power supply is connected. When powered ON, the unit may be operated normally while charging
the battery packs concurrently. Typical charging time for each battery pack is approximately 6 hours, and
dual batteries are charged concurrently. Battery performance and life will be affected by temperature and
number of recharge cycles
5.2.9.1 Safety Summary
Please carefully read and follow all warnings and cautions in this document before handling and
operating the HMC-T2220B and battery packs. Serious injury and equipment failures may occur if the
safety warnings and cautions are not followed.
CAUTION:
Only battery packs supplied by Hittite Microwave Corporation can be used in the HMC-T2220B.
Remove batteries when packaging the unit for shipment.
5.2.9.2 Battery Installation
Disconnect the external power supply cable from the back of the HMC-T2220B.
To install either one or two of the lithium-ion battery packs, simply remove the top cover by loosening
the two captive screws. Prior to installation, battery charge status can be checked by depressing the

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red button on the battery pack. A series of four LEDs will indicate the battery charge status. This status
may also be checked in the same manner once installed.
Figure 6.HMC-T2220B Battery Compartment
Insert the battery pack(s) into the HMC-T2220B and verify that the battery pack connector fully engages
the HMC-T2220B receptacle connector. Reinstall the cover and tighten the two captive screws. The unit
is now ready to be operated from battery power. If so desired, re-install the external power supply cable.
5.2.9.3 Operating on Battery Power
Operate the HMC-T2220B normally until the battery indicator on the front panel LCD indicates a low
battery warning. You should be able to use the unit for an average of 2 hours, (single battery), or
4 hours, (dual batteries) when batteries are new without having to recharge. Once the battery low
condition occurs, you should have approximate 5-10 minutes of operation until the internal power
monitoring circuitry will automatically shut down the unit to prevent over discharging the batteries. It is
recommended that the batteries be re-charged before the automatic shutdown engages.
5.2.9.4 Battery Charging
The battery pack(s) are charged by connecting the external power supply to the rear of the unit. With
the external power supply turned off, insert the battery(s) into the unit. Turn on the external power
supply. Turn on the unit with the front panel power button. The battery present indicator should be on, or
the battery charging indicator will be on when the battery(s) are charging. The battery charging indicator
will go off when the battery(s) are fully charged and the battery present indicator will be on.
NOTES:
1. The battery unit will shut itself off. Under normal operation at the manufacturers minimum
operating voltage, preventing the battery from being discharged.
2. If a battery pack becomes over discharged, or the battery pack’s internal protection circuits
have been activated, battery charge time may be longer than typical.

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3. If a battery pack has been over discharged resulting in a lower than expected voltage, the
battery charging circuit may not turn on when the battery is inserted into the unit while operating
from the external power supply. In this event, the external power supply should be turned off
before inserting the battery(s).
4. The charging circuits include an internal safety timer. Under normal conditions charging time
will be less than 7 hours. In the event that battery charging time is greater than 8 hours, the
battery(s) are considered defective and should be replaced and properly disposed.
5. Batteries may be left in the unit at all times. The battery charger will charge and maintain the
battery(s) level as long as the external power supply is on. If the battery pack(s) are left on the
shelf, the battery charge level will reduce over time.
6. As the number of charge and discharge cycles increase, the operating duration from battery
power will reduce. The battery pack should be disposed of to the appropriate recycling agency.
5.2.9.5 Battery Status
Battery status is available from the Frequency & Power LCD display, Battery Status Display, or via SCPI
commands (See the Programmer’s Guide).
5.2.9.6 Battery Storage Recommendations
The batteries should be stored at room temperature, charged to about 30 to 50% of capacity. It is
recommended that the batteries be charged at least once a year to prevent over-discharge.
5.2.9.7 Replacement Batteries
Replace batteries with Lithium-Ion batteries, Honeywell Batteries part number HD220R-Li. These
batteries may be purchased through Hittite, as Hittite part number HMC-T2220B-BATTERY.
5.3 Environmental Requirements
The unit is designed to be operated in an environment meeting the following requirements:
Environment Condition Value
General Usage Indoors
Temperature 0 to 35 degrees C
Humidity 15% to 95% non-condensing (See Datasheet)
Altitude Less than 3000 meters
Table 4. Environmental Operating Conditions
5.4 Fan Air Inlets
The unit utilizes fans, mounted on the rear panel for cooling. Please ensure that the fans, and vent
openings are not obstructed or the unit may overheat and damage may result.
5.5 GUI Instrument control
The instrument may be controlled from a computer using the Hittite Supplied GUI application. The features
of the GUI are described in this section. A picture of the GUI is shown in gure 7.

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Figure 7.HMC-T2200 GUI Application
(GUI may appear differently per unit)
5.5.1 Hardware Selection and Control
The application software supports multiple HMC-T2220/40/70, and HMC-2220B synthesizers being
connected to the computer at one time. With the supplied software GUI, only one synthesizer can be
selected and controlled from the GUI application at one time. Multiple synthesizers can be controlled by
changing the selected synthesizer from the drop-down list at the top of the GUI, or by launching multiple
copies of the GUI. Please refer to section 7.0 herein. The Control Menu may be accessed by pointing to
the GUI and performing a Right Click with the mouse. The functions available from this menu are ReMap
Hardware, Open, Close and Refresh. The top pull-down menu will provide a list of connected synthesizers
after the application has been opened. Some of the features below may be accessed through the button
below the hardware pull-down menu. The function of this button changes depending on the state of the
software.
5.5.2 ReMap Hardware
If synthesizers are added to the computer after the application has been opened, the ReMap Hardware
function may be used to force the computer to go and check for any new synthesizer units.
5.5.2.1 Open
The Open function is used to establish a connection to a specied synthesizer. A synthesizer is
selected with the upper right hand pull-down menu.

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5.5.2.2 Close
The Close function is used to disconnect the currently selected synthesizer. A new synthesizer may
then be selected with the upper right hand pull-down menu, and the Open function.
5.5.2.3 Refresh
Once a synthesizer has been selected with the Open command, the Refresh function may be used
to read the current status of the synthesizer. If the GUI checkbox for Remote and Local Lockout has
not been checked, the Refresh function will read the current status of the unit as commanded via the
synthesizer’s front panel.
5.5.3 Synthesizer Selection Menu
This is a pull-down menu at the top right hand side of the GUI. All synthesizers which have been detected
by the software are displayed in this menu. If synthesizers are added to the computer after the application
has been started, use the ReMap Hardware function to force the software to check for other synthesizers.
5.5.4 Remote
The Remote feature is enabled by a checkbox available within the GUI. When the checkbox is selected,
computer controlled operation via the USB is enabled. If this checkbox is not selected, the software
application will not change any settings in the synthesizer. However in this state, if the Refresh button is
depressed, the current Frequency and Power elds will be updated with the current settings within the
synthesizer.
5.5.5 Local Lockout
The Local Lockout feature is enables by a checkbox within the GUI. When the checkbox is selected, local
control from the front panel will not resume after pressing and holding the rotary knob for at least 1.5
seconds.
5.5.6 Frequency Field
The Frequency of the synthesizer may be controlled with the text box. The desired frequency can be
typed into the provided text box. Also, the up and down arrows on the keyboard and next to the GUI eld
may be used to increment or decrement the frequency by the amount indicated in the Step box. After
a new frequency has been entered, the application attempts to set the synthesizer to the commanded
frequency. If the specied frequency is out of range or contains non-numeric characters, the eld will be
highlighted in yellow.
5.5.7 Power eld
The power of the synthesizer may be controlled with the text box. The desired power can be typed into the
provided text box. Also, the up and down arrows on the keyboard and next to the GUI eld may be used to
increment or decrement the frequency by the dBm indicated in the Step box. After a new power level has
been entered, the application attempts to set the synthesizer to the commanded power. If the specied
power is out of range or contains non-numeric characters, the eld will be highlighted in yellow.
5.5.8 RF Output On
The RF Output On checkbox is used to enable and disable the RF output of the Signal Generator.
5.5.9 Synthesizer Frequency Sweeping Controls
The GUI provides a number of controls to allow the user to perform frequency and power sweeps.
5.5.9.1 Sweep Mode Dropdown Menu
The user can choose to sweep Frequency, Power, Frequency List, Power List, Frequency+Power List
or None using this dropdown menu.

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5.5.9.2 Start / Stop
When the start button is pressed, a single sweep is performed with the selected parameters.
Depressing the “Stop” button will stop the current sweep. At the normal completion of any sweeps, the
unit will remain at the last programmed (STOP condition) power and frequency.
5.5.9.3 Continuous
If Continuous is selected (checked), sweeping nuns continuously for the parameters selected. If Stop is
depressed the sweep is reset to the rst parameter of the sweep and then continues sweeping
5.5.9.4 Start Frequency / Stop Frequency / Step Size
For sweep operations, the user can select the start frequency, the stop frequency, and the step size
between frequencies.
5.5.9.5 Dwell Time
A text box is provided to enter the value of the “Dwell Time” for each step in the sweep. Valid values for
this eld are 0.001 secs to 3600 secs with 1 µsec resolution. The value may be entered by typing the
desired value or using the up and down arrows to increment or decrement the time duration.
5.5.9.6 Sweep Count
The user can enter a value to specify the number of sweeps which are enabled by a single trigger
event.
5.5.9.7 Direction
The user can select UP/DOWN from this dropdown menu to control the direction of the sweep.
5.5.9.8 Trigger Source
The user can select IMMediate, EXTernal, or BUS from this dropdown menu to control the trigger
source of the sweep.
5.5.9.9 Slope
The user can select POSitive, NEGative and EITHer from this dropdown menu to control the trigger
event occurring on the rising edge, falling edge, or either edge of the signal.
5.5.10 ContextMenuStrip Control
Go to an empty part of your GUI, away from any icons, and click the right mouse button, and you will see a
menu open that shows a list.
5.5.10.1 Remap Hardware
Selecting “Remap Hardware” will have the same function as clicking the “Remap Hardware” button.
5.5.10.2 Open
Selecting “Open” will have the same function as clicking the”Open” button.
5.5.10.3 Refresh
Selecting “Refresh” will have the same function as clicking the “Refresh” button.
5.5.10.4 Close
Selecting “Close” will have the same function as clicking the “Close” button.
5.5.10.5 T2100 Compatible
Selecting “T2100 Compatible” will cause the unit to reboot and to go to T2100 Compatible mode;
Deselecting “T2100 Compatible” will cause the unit to reboot and to go to the Normal operation mode.