Options
A
B
C
Input Isolator: Inserted between the input and the TWT. Input VSWR is reduced to less than 1.5:1.
Input RF Attenuator: 20 dB continuous variation of RF gain. This attenuator is connected after the input isolator.
Harmonic Filter: Inserted after the output isolator. The amount of filtering depends upon the harmonic frequency relative
to the upper band edge.
Frequency
Relative to upper band edge
Attenuation
(Typical)
0.95
1.00
0.35 dB to 18 GHz
0.35 dB to 8 GHz
0.45 dB to 18 GHz
3 dB
1.05
1.20
1.35 and above
30 dB
60 dB
D
E
Output Isolator: Inserted immediately following the TWT to isolate it from load mismatches. The result is improved gain
flatness vs. frequency and protection of the TWT. The output VSWR is reduced to 1.5:1 typically. Max. is 2.0:1.
RF Output Sample Port: -30 dB nominal directional coupler added at the output following the output isolator (-35 dB
nominal for the VZV 2776K4). It is brought to the front panel via a Type N connector.
F
Chassis Slides
G
Remote Control: Rear Panel connector providing remote control of Mains Power ON/OFF, High Voltage ON/OFF – FAULT
RESET and External Interlock.
Mains Power ON requires +12 volts at 30 mA from an external power supply. High Voltage ON/OFF is a contact closure
to ground. External Interlock is a contact closure which must be closed for the amplifier to operate.
All Front Panel status indications are brought to this connector via open collector transistor outputs to ground rated at
14 Volts max. collector to emitter at 30 mA max.
H
J
Elapsed Time Meter
Rear RF Connectors
K
L
230 Vac Mains Prime Power
Solid State Input Pre-Amplifier: Inserted between the RF attenuator and the TWT. Raises the overall gain so that at least
0 dBm will produce rated power output.
Q
U
100 Vac Mains Prime Power
SMA Adapters
Note 1 The incorporation of all microwave options reduces the overall gain of the amplifier by the sum total of the insertion
losses. (See Table 1.)
Note 2 The incorporation of all microwave options at the output reduces the maximum power delivered to the output
connector by the sum total of the insertion losses. (See Table 1.)
Table 1
Insertion Loss (dB) for Various Microwave Option Configurations
Frequency Range (GHz)
Loss Affects
4-8
Pwr Gain
8-12.4
Pwr Gain
12.4-18
Pwr Gain
8-18
Pwr Gain
4-18
Pwr Gain
Option Description
A
B
C
D
E
J
Input Isolator
–
–
0.6
1.0
–
–
0.6
1.0
–
–
0.6
1.0
–
–
0.6
1.5
–
–
2.5
1.0
N/A
N/A
0.8
0.6
RF Gain Adjust
Harmonic Filter
Output Isolator
RF Sample Port
Rear Connector
0.45 0.45
0.6 0.6
0.4 0.4
0.4 0.4
0.45 0.45
0.45 0.45
0.45 0.45
–
0.6
0.4
0.5
0.6
0.4
0.5
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.5
0.6
0.6
0.5
0.6
–
0.8
0.6
Note: Characteristics and operating values are based on performance tests. These figures may change without notice as a
result of additional data or product refinement. Please contact CPI before using this information for system design.
CPI [ COMMUNICATIONS & POWER INDUSTRIES, INC. ]
