750W Compact Medium Power Amplifier
for Satellite Communications
K u -B a n d
The VZU-6997AD
750 Watt TWT
Medium Power
high efficiency in a
compact package
Easy to Maintain
Provides 750 watts of power in a 5 rack unit
package, digital ready, for wideband, single- and
multi-carrier satellite service in the 13.75-14.50
GHz frequency band. Ideal for transportable and
fixed earth station applications where space and
prime power are at a premium.
Modular design and built-in fault diagnostic
capability with convenient and clearly visible
indicators for easy maintainability in the field.
Employs a high efficiency dual-depressed
collector helix traveling wave tube backed by
many years of field-proven experience in
airborne and military applications.
Worldwide Support
Backed by over three decades of satellite
communications experience, and CPI’s worldwide
24-hour customer support network that includes
sixteen regional factory Service Centers.
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.
811 Hansen Way
P.O. Box 51625, Palo Alto, CA 94303
tel: +1 (650) 846-3803
fax: +1 (650) 424-1744
e-mail: [email protected]
750W Compact Medium Power Amplif ier
Ku-Ba n d
13.75 to 14.50 GHz
Output Power
750 W min. (58.75 dBm)
650 W min. (58.13 dBm)
750 MHz
75 dB min. at rated power, 88 dB max.
78 dB min. at small signal, 90 dB max.
RF Level Adjust Range
0 to 20 dB (via PIN diode attenuator)
• Integral Linearizer
• Remote Control Panel
Gain Stability
At constant drive & temp.
• Redundant and Power
Combined Subsystems
Over temp., constant drive
(any frequency)
• External Receive Band
Reject Filter (Increases
loss by a minimum of
75 dB up to 12.75 GHz)
Small Signal Gain Slope
Small Signal Gain Variation
Across any 80 MHz band
Across the 750 MHz band
Across 750 MHz,
with linearizer
• Extended Frequency
(12.75 to 14.50 GHz,
Model Number
Electrical (continued)
±0.25 dB/24 hr. max.
(after 30 min. warmup)
±1.0 dB over oper. temp. range (typical)
±0.75 dB over ±10°C (typical)
±0.04 dB/MHz max.
1.0 dB pk-pk max.
3.5 dB pk-pk max.
0.02 ns/MHz linear max.
0.005 ns/MHz sq. parabolic max.
0.5 ns pk-pk ripple max.
Primary Power
Single phase, 208-240 VAC ±10%
47-63 Hz
Power Consumption
2.7 kVA typ. (at saturated
output power)
3.0 kVA max.
Power Factor
0.95 min.
Inrush Current
200% max.
Environmental (Operating)
Ambient Temperature
-10°C to +50°C operating
-40°C to +70°C non-operating
1.3:1 max.
Relative Humidity
95% non-condensing
Output VSWR
1.3:1 max.
Continuous operation
Full spec. compliance
Operation without damage
Any value
10,000 ft. with standard adiabatic
derating of 2°C/1000 ft., operating;
50,000 ft., non-operating
Shock and Vibration
Designed for normal transportation
environment per Section 514.4
MIL-STD-810E. Designed to
withstand 20G at 11 ms (1/2 sine
pulse) in non-operating condition.
AM/PM Conversion
-50 dBc below 10 kHz
-20[1.5+log F(kHz)] dBc,
10 kHz to 500 kHz
-85 dBc above 500 kHz
2.5°/dB max. for a single-carrier at
8 dB below rated power. With optional
integral linearizer, improves to
1.0 deg/dB max.
Harmonic Output
-80 dBc at rated power,
second and third harmonics
Noise and Spurious
<-120 dBW/4 kHz, below 12.7 GHz
<-65 dBW/4 kHz, 12.7 to 18.0 GHz
<-60 dBW/4 kHz, 12.7 to 18.0 GHz
with linearizer option
<-105 dBW/4 kHz, 18.0 to 26.0 GHz
<-125 dBW/4 kHz, 26.0 to 40.0 GHz
Noise Figure
10 dB max.; 15 dB max.
with optional integral linearizer
Certificate Number: 30515
For more detailed information, please refer to the corresponding CPI Technical Description.
Note: Specifications may change without notice as a result of additional data or product refinement.
Please contact CPI before using this information for system design.
Group Delay
(in any 80 MHz band)
5.5 dB pk-pk max.
Phase Noise
phase noise profile
-6 dB
AC fundamentals related
-36 dBc
Sum of spurs (370 Hz to 1 MHz) -47 dBc
-23 dBc or better with two equal
carriers at total output power
level 7 dB (4 dB with optional
integral linearizer) below rated
single-carrier output.
Input VSWR
Residual AM, max.
Forced air with integral blower.
Rear air intake & exhaust.
Maximum external pressure loss
allowable: 0.5 inches water column
RF Input Connection
Type N female
RF Output Connection
WR-75 waveguide flange,
grooved, threaded UNC 2B 6-32
RF Output Monitor
Type N female
Dimensions (W x H x D)
19 x 8.75 x 24 in.
(483 x 222 x 610 mm)
95 lbs (43 kg) max.
Heat and Acoustic
Heat Dissipation
2,000 Watts max.
Acoustic Noise
68 dBA (as measured at 3 ft.)