Honeywell 90402651-000, Описание системы, руководство по установке и обслуживанию

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Page 2-4
22 Apr 2019
23-15-49
SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL
ASPIRE-400
4. Tx RF Modes of Operation
A. General
Table 2-1. Tx RF Input/Output
Tx Type
Description
dB(s)
Tx RF Input VSWR The VSWR looking into the Tx RF interface does not exceed
1.5:1 when measured with respect to a characteristic
impedance of 50 ohms anywhere within the L-band Tx
frequency range. N/A
Tx RF Input Dynamic
Range
The HPA meets transmit performance requirements for per
carrier input levels +10 dBm to -33
dBm
Tx RF Input
Instantaneous Dynamic
Range After system calibration and the setting
of the input attenuator value the
instantaneous dynamic range of carriers
post the input attenuator is 20 dB.
Instantaneous per carrier dynamic range
accounts for: Inmarsat System
per carrier gain
adjustment 10 dB
Antenna reporting
gain range
8 dB
AES system gain
adjustments to
overcome gain
tolerance ±2 dB
Tx RF Input Damage
Level The HPA meets the transmit performance requirements after
exposure to a total average input power of: +20 dBm
Tx RF Load VSWR
Capability The HPA does not sustain permanent damage if operated
continuously at full output into an infinite VSWR load at any
phase angle.
During steady state operation, the HPA does not exhibit
oscillations for any combination of input and output load
impedance within the 2:1 VSWR circle.
The VSWR looking into the RF output port does not exceed
1.5:1 when measured with respect to a characteristic
impedance of 50 ohm anywhere within the L-band Tx
frequency range.
Under conditions of a single modulated carrier, at rated output
power, the measured power with respect to that measured
into a matched resistive load when measured into any load
within the 2:1 VSWR circle is: >=0.9 dBr
DRAFT
3rd rvw Draft as of:
29 January, 2020