CPI VZC-6964

400W Compact Medium Power Amplifier
for Satellite Communications
The VZC-6964
400 Watt TWT
Medium Power
high efficiency in a
compact package.
Global Applications
Provides 400 watts of power in a 3 rack unit
package, digital ready, for wideband, single- and
multi-carrier satellite service in the 5.850-6.650
GHz frequency band. Ideal for transportable and
fixed earth station applications where space and
prime power are at a premium.
Meets International Safety Standard EN-60215,
Electromagnetic Compatibility 89/336/EEC and
Harmonic Standard EN-61000-3-2 to satisfy
worldwide requirements.
Employs a high efficiency dual-depressed
collector helix traveling wave tube backed by
many years of field-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.
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 field.
Worldwide Support
Backed by over three decades of satellite
communications experience, and CPI’s worldwide
24-hour customer support network that includes
fifteen 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: [email protected]
400W Compact Medium Power Amplif ier
C-B a n d
TWT Model Number
Electrical (continued)
5.850 to 6.650 GHz, 5.850 to 7.075 GHz,
or 5.725 to 6.525 GHz
Group Delay
(in any 40 MHz band)
Output Power
400 W min. (56.02 dBm)
350 W min. (55.44 dBm)
Primary Power
110 - 240 VAC ±10%,
single phase 47- 63 Hz
• Remote Control Panel
800 or 1225 MHz, depending on configuration
Power Consumption
• Integral Linearizer
75 dB min. at rated power output;
78 dB min. at small signal
1.3 kVA, typ.
1.5 kVA, max.
Power Factor
0.95 min.
• Redundant and Power
Combined Subsystems
RF Level Adjust Range
0 to 20 dB
Environmental (Operating)
Gain Stability
±0.25 dB/24hr max.
(at constant drive and temp.)
Ambient Temperature
-10° to +50°C operating
-40° to +70°C non-operating
Relative Humidity
95% non-condensing
10,000 ft. with standard adiabatic
derating of 2°C/1000 ft., operating;
40,000 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
Acoustic Noise
65 dBA @ 3 ft. from amplifier
• External Receive Band
Reject Filter (Increases
loss by a minimum
65 dB up to 4.8 GHz)
Small Signal Gain Slope
±0.02 dB/MHz max.
Small Signal Gain Variation
0.6 dB pk-pk across any 40 MHz band;
2.5 dB pk-pk across 5.725 - 6.525 GHz;
4.0 dB pk-pk across 5.850 - 6.650 GHz
or 5.850 - 7.025 GHz (2.5 dB pk-pk typ.);
6.0 dB pk-pk across the 1225 MHz band
with linearizer;
4.5 dB pk-pk across 800 MHz band
with linearizer.
Input VSWR
1.3:1 max.
Output VSWR
1.3:1 max.
2.0:1 max. operational; any value for operation
without damage
Residual AM
-50 dBc below 10 kHz
-20[1.3 +log F(kHz)] dBc, 10 kHz to 500 kHz
-85 dBc above 500 kHz
Phase Noise
IESS Phase Noise Profile
AC Fundamental
Sum of All Spurs
AM/PM Conversion
-6 dBc
-36 dBc
-47 dBc
2.5°/dB max. for a single carrier at
8 dB below rated power for 5.85 to 6.65 GHz
configuration; 3.0°/dB max. for all
other configurations
Harmonic Output
-60 dBc at rated power, second and third
Spurious Output
(at rated gain)
<-130 dBW/4 kHz from 3.4 to 4.2 GHz
<-65 dBW/4 kHz from 4.2 to 12.0 GHz
(<-60 dBW/4 kHz with linearizer option)
<-110 dBW/4 kHz from 12.0 to 40.0 GHz
5.85 - 6.65 GHz configuration: -24 dBc max.
with two equal carriers at total output power
7 dB (at 4 dB with optional integral linearizer)
below rated single-carrier output;
All other configurations: -23 dBc max at
7 dB OBO (at 4 dB OBO with 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.
MKT 19, ISSUE 19
0.01 ns/MHz linear max.
0.001 ns/MHz 2 parabolic max.
0.5 ns pk-pk ripple max.
Cooling (TWT)
Forced air with integral blower
Rear air intake & exhaust
RF Input Connection
Type N female
RF Output Connection
WR 137G waveguide flange,
grooved with UNC 2B 10-32
threaded holes
RF Output Monitor
Type N female
Dimensions (W x H x D)
19 x 5.25 x 24 in.
(483 x 133 x 610 mm)
70 lbs (31.8 kg) max.