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TB9400 Specifications Manual
Base Station Specifications
27
© Tait Limited July 2017
Duty cycle
Up to 3600m (11810ft) altitude
Above 3600m (11810ft) altitude
100% at maximum rated output power
d
at +60°C
(+140°F) ambient temperature
100% at maximum rated output power
d
at +50°C
(+122°F) ambient temperature, or output power
derated by 1.5dB at +60°C (+140°F)
d. Measured directly on PA output.
Mismatch capability
Ruggedness
Stability
open and short circuit load at any phase angle for one
hour
e
5:1 load VSWR at all phase angles
e
e. Under power foldback.
Protection
f
Temperature
Current
Supply voltage
VSWR
Feedback loop instability
power foldback to 35W if RF power devices exceed
safe operating conditions
power foldback and shutdown if RF power devices
exceed safe operating currents for more than 5
seconds
power foldback to 35W when supply voltage is 24V to
26V and 30V to 32V; shutdown when supply voltage
is <24V and >32V
power foldback to 35W when VSWR >3:1
power reduces to maintain loop stability within safe
margins
f. Power foldback to 35W occurs only if the output power is set to more than 35W. If the output power is set to less than
35W, the power stays at the set level during foldback conditions.
Adjacent channel power
g
All modulation types
< –67dBc TIA-102.CAAA and TIA-102.CCAA
Adjacent channel power (B3 and H bands only)
All modulation types
< –60dBc EN 300 113
g. 762-776MHz band complies with FCC 47 CFR 27.53(e)(6) and 47 CFR 90.543(a)
Modulation emission spectrum
TIA-102.CAAB-D paragraphs 3.2.5.1 and 3.2.5.2,
LSM, and TIA-102.CCAB paragraph 3.2.5.1
Modulation fidelity
<2% TIA-102.CAAA and TIA-102.CCAA
Intermodulation
better than 65dB TIA-102.CAAA and TIA-102.CCAA
(typical)
General (Continued)