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8.1.6 FULL TUNING DURATION (BASIC CYCLE)
Basic cycle for preparation of user full tuning settings, with automatic storage in the
non-volatile memory:
-
In the range of 1.8 to 10MHz: no more than 5s (2-3s typically)
-
In the range of 10 to 54MHz: no more than 3s (1-2s typically).
8.1.7 INPUT SIGNAL NEEDED TO PREPARE USER TUNING SETTINGS
Non-modulated carrier power 25W +3/-3dB (12.5 to 50W).
8.1.8 POWER SUPPLY
+26VDC +10/-15%, consumption of 25W at most; supplied by an amplifier of the ACOM
transistor series over the input RF coaxial cable.
8.1.9 REMOTE CONTROL
The remote control and indication from an amplifier of the ACOM transistor series is
provided over the input RF coaxial cable of the tuner using a 60kHz/4800bps bidirec-
tional FSK modem.
8.1.10 MAXIMUM LENGTH OF THE INPUT COAXIAL CABLE
The maximum length of the RF coaxial cable between the amplifier output and the
tuner input (S. 8.1.4, S. 8.1.8, S. 8.1.9, S. 8.2.9) is 100m (330ft) for a cable of RG-213
type or similar. The cable characteristic impedance should be 50 Ohm and the DC re-
sistance should be below 1 Ohm for inner and outer conductors altogether.
To achieve maximum distance the coaxial cable must be of copper, not steel
conductors (even though silver plated).
8.1.11 DIMENSIONS AND MASS (OPERATING, EXCLUDING FASTENING ELE-
MENTS)
-
width 345mm (13.6")
-
depth 250mm (9.9")
-
height 190mm (7.5")
-
mass 4.2kg (9.25lbs).
8.1.12 OPERATING ENVIRONMENT
-
protection class: IP 53 (NEMA Type 3)
-
temperature range: -40...+65
-
relative humidity of air: up to 98% at +40
-
altitude without deterioration of parameters: up to 3050m
(10,000ft).
48
48
NOTE
C (-40...+150
F)
o
o
C (104
o
F)
o
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