Preparation For Use And Installation; Unpacking And Inspection; Mounting; Antenna - Ten-Tec RX-340 Technical Manual

PREPARATION FOR USE AND INSTALLATION

2-1 UNPACKING AND INSPECTION: Examine the shipping carton for damage
before unpacking. If the carton is damaged, attempt to open it in the presence of an agent
of the shipping carrier. If undamaged, retain the carton and packing material for further
inspection in case damage to the unit is discovered later.
Remove the bubble packing from the top of the unit, then lift the radio free from its
carton (there are no additional packing materials inside the radio's cabinet). Replace the
bubble packing material in the carton and save for possible reshipment at a future time.
Inspect the unit for external damage. Pay particular attention to dents or bent sheet metal.
If external damage is evident, remove the top and bottom covers and inspect for internal
damage such as cracked circuit boards or broken components. Do not attempt to operate
the unit if internal damage is noted.
2-2 MOUNTING: RX-340 is designed for ETA standard 19" panel space rack. Slide-
mechanism attachment points (10-32 thread) are compatible with Jonathan slide type
375QD.
2-3 POWER: A fused power receptacle accepts a standard 3-wire instrumentation-type
AC power cord. Receiver operates from 90-264 VAC (48-440 Hz) without setting
switches or jumpers.
2-4 ANTENNA: A standard 50Ω antenna input connection is provided at BNC jack J5.
2-5 IF OUT: A DSP-processed 455 kHz output with 120 dB AGC range and adjustable
bandwidth is available at J4 (inverted, 1 Hz tuning step).
2-6 SIG MON: A 455 kHz inverted signal with 16 kHz bandwidth and 80 dB AGC
range is available at J3 (1 kHz tuning step).
ST MIXER OUT: An inverted 45.455 MHz signal with no AGC and bandwidth
2-7 1
determined by preselector is available at J9 (1 kHz tuning step).
ND MIXER OUT: A 455 kHz inverted signal with fixed 16 kHz bandwidth and no
2-8 2
AGC is available at J10 (1 kHz tuning step).
2-9 EXT REF: A 1 MHz, 2 MHz, 5 MHz or 10 MHz @200 mV rms (minimum) signal
may be applied to J2 to automatically override the internal 10-MHz reference.
2-10 RS-232: A RS-232 input jack at J1 accepts a standard DB-25 connector for remote
operation.
CHAPTER 2
2-1