Comtech EF Data CST-5000 User Manual

Page 25

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CST-5000 C-Band Satellite Terminal

Introduction

Rev. 9

1–9

Table 1-2. RFT-500 Specifications

Transmit

Output Frequency (No Inversion)

5.845 to 6.425 GHz

Input Frequency

70 MHz,

±

18 MHz (optional 140 MHz,

± 36 MHz)

Output Power:

at 1 dB compression


+8 dBm
or 5W (+37 dBm)
or 10W (+40 dBm)
or 20W (+43 dBm)
or 40W (+46 dBm)

Third Order Intercept

+18 dBm (for +8 dBm)
or +46 dBm (for 5W)
or +49 dBm (for 10W)
or +52 dBm (for 20W)
or +55 dBm (for 40W)

Nominal Small Signal Gain

26 dB (for +8 dBm)
or 68 dB (for 5W)
or 71 dB (for 10W)
or 74 dB (for 20W)
or 77 dB (for 40W)

Gain Adjust Range

0 to 25 dB, in 0.5 dB steps

Gain Variation:

Over 36 MHz
Over 36 MHz, Temperature, and Aging

±

1 dB maximum

±

2 dB maximum

Noise Figure:

Maximum Attenuation
Minimum Attenuation


23 dB maximum
15 dB maximum

Group Delay

25 ns/36 MHz

Synthesizer Step Size

2.5 MHz (optional 125 kHz)

Synthesizer Phase Noise

-60 dBc/Hz at 100 Hz
-70 dBc/Hz at 1 kHz
-75 dBc/Hz at 10 kHz
-80 dBc/Hz at 100 kHz

Frequency Stability:

At Shipment
Daily at 23

°

C

Annual at 23

°

C

Over Temperature
After 30 Minutes Warm-up
Electrical Adjustment

±

1 x 10

-8

±

1 x 10

-8

±

1 x 10

-7

±

1 x 10

-8

(-40 to +55

°

C) (-104 to +131° F)

±

1 x 10

-8

0.5 x 10

-7

Isolation on Fault Shutdown

-60 dBc

Spurious:

< 250 kHz Carrier Offset
> 250 kHz Carrier Offset


-35 dBc maximum
-58 dBc maximum

HPA Harmonics

-50 dBc maximum

RF Output VSWR

1.5:1 at 50

RF Output Connector

Type N female

IF Input VSWR

1.5:1 at 50

IF Input Connector

Type TNC female

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