CPI VZU-6994 Manual

350/400w compact medium power amplifier

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The VZU-6994

Up to 400 Watt

TWT Medium

Power Ampliﬁ er

— high efﬁ ciency in a

compact package.

350/400W Compact Medium Power Amplifier

for Satellite Communications

K u-Band

Compact

Provides up to 400 watts of power in a 3 rack

unit package, digital ready, for wideband, single-

and multi-carrier satellite service in the Ku-Band

frequency range. Ideal for transportable and ﬁ xed

earth station applications where space and prime

power are at a premium.

Efficient

Employs a high efﬁ ciency dual-depressed

collector helix traveling wave tube backed by

many years of ﬁ eld-proven experience in airborne

and military applications.

Simple to Operate

User-friendly microprocessor-controlled

logic with integrated computer interface.

Digital metering, pin diode attenuation and

optional integrated linearizer for improved

intermodulation performance.

Global Applications

Meets International Safety Standard EN-60215,

Electromagnetic Compatibility 89/336/EEC and

Harmonic Standard EN-61000-3-2 to satisfy

worldwide requirements.

Easy to Maintain

Modular design and built-in fault diagnostic

capability with convenient and clearly visible

indicators behind front panel door for easy

maintainability in the ﬁ eld.

Worldwide Support

Backed by over three decades of satellite

communi cations experience, and CPI's worldwide

24-hour customer support network that includes

ﬁ fteen regional factory service centers.

811 Hansen Way

P.O. Box 51625, Palo Alto, CA 94303

tel: +1 (650) 846-3803

fax: +1 (650) 424-1744

e-mail: marketing@satcom.cpii.com

www.cpii.com/satcom

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Summary of Contents for CPI VZU-6994

Page 1 Worldwide Support Backed by over three decades of satellite communi cations experience, and CPI’s worldwide Efficient Employs a high efﬁ ciency dual-depressed 24-hour customer support network that includes collector helix traveling wave tube backed by ﬁ...
Page 2: Remote Control Panel
Certificate Number: 30515 For more detailed information, please refer to the corresponding CPI Technical Description. Note: Speciﬁ cations may change without notice as a result of additional data or product reﬁ nement. Please contact CPI before using this information for system design.
Page 3 EN60215 safety and 2004/108/EC electromagnetic compatibility requirements. The VZU-6994 CMPA is a member of a comprehensive line of communication amplifiers comprising TWT Amplifiers (TWTAs), High Power Klystron Amplifiers (KPAs), and Solid State Power Amplifiers (SSPAs). All are designed specifically for service in satellite earth stations operating in standard frequency bands.
Page 4: Equipment Description
EQUIPMENT DESCRIPTION General The VZU-6994 CMPA (Figure 1) is packaged in a 5.25 inch tall slide-mounted drawer suitable for standard 19-inch rack mounting. This enclosed assembly houses both the RF and power supply sections of the amplifier. The RF section includes the TWT, solid state intermediate power amplifier (IPA), input/output isolation circuits, input attenuator, RF detectors and output harmonic filter.
Page 5 The filters used in the VZU-6994 series are designed to minimize noise power density in their respective receive bands. Finally, the three port directional coupler provides one reflected...
Page 6: Power Supply Subsystem
The output and reflected power level readouts are also available for remote monitoring via the optional CPI remote panel or the computer interface (CIF) port located on the rear panel. RF drive is adjustable via these ports as well. The standard RF output interface to connect the CMPA to the external waveguide run is a WR-75F (flange) termination.
Page 7: Power Processor Module
for proper fault handling and display via the detail fault LEDs located through the front panel access door. Power Processor Module The power processor circuits provide the necessary line and load regulation of the input 375 volt DC bus, which is converted via a switch regulator and bridge circuit to a nominal 200 volt, 21 kHz to drive the high voltage module.
Page 8 Figure 4 and the Product Specifications below present a complete list of controls, displays, and LED indicators on the front panels. All panel indicators are reliable, bright LEDs. When control power is turned on, the microprocessor self-tests all internal functions and starts HTD (Heater Time Delay).
Page 9: Mechanical Design
Mechanical Design General The VZU-6994 is packaged in a standard rack mounted drawer measuring 19" wide by 5.25" high and 24" deep (plus connectors, fan and air duct adapters). The unit is cooled via a forced-air cooling system consisting of two axial fans, an air filter and an exhaust duct.
Page 10: Product Specifications
PRODUCT SPECIFICATIONS The following specification limits and characteristics apply to the CPI VZU-6994 Series TWTA unless otherwise specified. Electrical Frequency VZU-6994-AC, -AD 13.75 - 14.50 GHz VZU-6994-AB 12.75 to 14.50 GHz VZU-6994-AP 14.7 to 15.2 GHz Output Power •TWT VZU-6994-AC,-AB,-AP 55.44 dBm min.
Page 11 -6 dB •AC fundamental -36 dBc •Sum of all spurs -47 dBc AM/PM Conversion VZU-6994-AC 2°/dB max. for a single carrier at 8 dB below rated power VZU-6994-AB,-AP,-AD 2.5°/dB max. for a single carrier at 8 dB below rated power...
Page 12 Electrical, continued Power Factor 0.95 min. (meets requirements of EN61000-3-2, total harmonic distortion) Power Consumption VZU-6994-AB,-AC,-AP 1.3 kVA (typical) VZU-6994-AD 1.35 kVA (typical) VZU-6994-AB,-AC,-AP 1.4 kVA (max.) VZU-6994-AD 1.5 kVA (max.) Inrush Current 200% max. Environmental Ambient Temperature •operating -10° to +50°C •non-operating...
Page 13: Monitors And Controls
Heat and Acoustic Heat Dissipation 1100 watts max. Acoustic Noise 65 dBA (as measured at 3 ft.) MONITORS AND CONTROLS Control Functions Main Power On/Off TX (Transmit) Select Transmit/Standby (Beam on/off) RF Drive Adjust (manual standard) Local/Remote/Computer (CIF) Select Indicator Test Fault Reset Monitoring RF Output Power...
Page 14: Remote Control Interface
REMOTE CONTROL INTERFACE Control Functions Transmit/Standby (Beam on/off) Fault Reset RF Drive Adjust Monitoring RF Output Power RF Reflected Power Helix Current Helix Voltage Attenuator Setting Control/ Status Power On/Off TX Select (Transmit Select) Heater Time Delay (HTD) Standby Transmit (Beam on) Local/Remote/Computer I/F Meter Select Fault/Alarm Displays...
Page 15 400 W X-Band Characteristics and performance limits are based on current data and are subject to change without notice. Please contact CPI Satcom Division before using this information for system design. ACCESSORIES Several optional accessory items have been designed for use with CPI Ku-band CMPAs.
Page 16: Support Services
Integral Linearizer The Integral Linearizer is an input device intended to improve the intermodulation characteristics of the CPI CMPAs. The unit functions predistort the RF input signal to compensate for the amplitude and phase non-linearities inherent in the TWT. In most applications the CMPA can then be operated 3 dB or more higher in output power (i.e.
Page 17 Courses may be conducted at the CPI factory or on-site. Course duration varies from two days to one or two weeks, depending on the scope of work agreed upon and the skill level of the students.
Page 18 Figure 1. CMPA Outline Drawing (ref. 01018602 rev A dtd 02/06) Note: Before using this drawing for system design, please check with CPI to ensure that it is the latest revision Ku-Band CMPA 04/08 TD-67 Page 16...
Page 19 *SOLID STATE INPUT INPUT AMPLIFIER ISOLA TOR ISOLA TOR I NT EGRATED RF OUTPUT ASSEMBLY RF INPUT RF OUTPUT 40 DB 59 DB 50 DB (WR-75 G ROO VED) *Contains integral PIN Diode Attenuator RF OUTPUT RF OUTPUT RF REFLECT ED SAMPLE PORT POWER POWER...
Page 20 DC Power Coll 1 TW T Basic Remote Control Coll 2 Sw itching I/F Monit or Serial Remot e Control (For use with CPI R emote Panel) Mic ro-controller SSIPA Computer I /F (with attenuator) User Interlocks Power Control Control &...
Page 21 Figure 4. CMPA Front Panel Ku-Band CMPA 04/08 Ku-Band CMPA 04/08 TD-67 Page 19 TD-67 Page 19...
Page 22 Cage Code Sheet 1 of 3 Class Size DWG. NO. SPECIFICATION 59782 01027691 APPLICATION REVISIONS Next Assembly Used On Description Date Approved VZU-6994AD PRE-REL 10/27/99 REL TO ENG. A00195 10/28/99 INC E.C.O. A02083 12/05/01 INC E.C.O. A02122 01/10/02 INC E.C.O. MFG REL/CL A A02717 5/16/03 CLS/GE...
Page 23 Cage Code Sheet 2 of 3 Class Size DWG. NO. SPECIFICATION 59782 01027691 Frequency (Ghz) CMPA Model Number Option Codes 13.750 - 14.500 VZU-6994AD XXXXXXXXX (9 spaces) Space Code Option Description Option Part Number Prime Power Single Phase, 110-240 VAC (Standard) None Front Panel Assembly Standard...
Page 24 Cage Code Sheet 3 of 3 Class Size DWG. NO. SPECIFICATION 59782 01027691 Space Code Option Description Option Part Number 8 & 9 Short Exhaust Duct (See accessories) 01020747-00 Receive Filter, External (See accessories) 01020654-00 High Altitude Heatsink (See accessories) 01027598-00 8 inch dia Intake Duct (See accessories) 01033309-00...

CPI VZU-6994 Manual

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