Tx Noise Figure; Out-Of-Tx Band Performance; Tx Gain; Spurious Outside Of Tx-Band When Carrier Present - Honeywell ASPIRE-400 System Description, Installation And Maintenance Manual

SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL
(c)
(2) Tx output port referenced spurious and noise in the Tx-band, 1626.5 MHz to 1662.5 MHz
while the PA is enabled and no carrier input is less than -56.5 dBm/3 kHz.
NOTE:
I.

Tx Noise Figure

(1) The noise figure of the transmit path is < 15 dB under conditions of 0 dB input attenuator
setting.
6.

Out-of-Tx Band Performance

A.

Tx Gain

(1) The gain of the PA is reduced by 40 dB minimum for all frequencies 600 MHz or more
away from the range 1626.5 MHz to 1660.5 MHz.
B.

Spurious Outside of Tx-band when Carrier Present

(1) Under conditions of a carrier signal of carrier rated power and a system applicable
modulation the out-of-Tx-band spurious and noise achieves the performance limits
derived from the specification limits of RTCA/DO-262D and associated notes in concert
with the performance specification behavior of a Type F diplexer.
NOTES:
C.

Spurious Outside of Tx-band When No Carrier Present

(1) Under conditions of no carriers present at the input and with the PA function enabled the
out-of-Tx-band spurious and noise achieves the performance limits derived from the
specification limits of RTCA/DO-262D and associated notes in concert with the
performance specification behavior of a Type F diplexer.
NOTES:
D.

Intermodulation Products Outside of Tx-band

(1) In the presence of two similarly modulated carriers yet of independent sequences and
each at maximum carrier rated power separated by at least 200 kHz and contained to the
1626.5 MHz to 1660.5 MHz Tx-band the achieved network performance at the Antenna
Port of a Type F diplexer connected in-line with the Tx output port incurring a net loss of
2.5 dB at midband is no greater than the performance limits as expressed in Table 2-3:
EFFECTIVITY
ALL
© Honeywell International Inc. Do not copy without express permission of Honeywell.
ASPIRE-400
2.5 dB Tx output to antenna port loss.
In Normal Operation the PA function will not be directed to disable PA function
during periods of burst inactivity.
1 The prescribed selectivity for GNSS-GPS or GNSS-Glonass receivers define
performance for both in-band narrow spurious and broadband spurious. If narrow
band spurious are present they should not form part of the Broadband noise
compliance.
2 Tx in-band spurious 1626.5 MHz to 1660.5 MHz defined elsewhere.
1 The prescribed selectivity for GNSS-GPS or GNSS-Glonass receivers define
performance for both in-band narrow spurious and broadband spurious. If narrow
band spurious are present they should not form part of the Broadband noise
compliance.
2 Tx in-band spurious is 1626.5 MHz to 1660.5 MHz and 1668.0 MHz defined
elsewhere.
23-15-49
3rd rvw Draft as of:
29 January, 2020
Page 2-8
22 Apr 2019