— 3 —
Section II
INSTALLATION AND CONNECTION
Unpacking and Inspection
Immediately upon receipt of the INOmini 674, inspect for
possible shipping damage. If damage is found or suspected,
notify the carrier at once, and then contact Inovonics.
We recommend that you set aside the original shipping car-
ton in the event that return for Warranty repair is required.
Shipping damage sustained as a result of improper packing
for return may invalidate the Warranty!
Warranty Registration
Please complete the Warranty Registration process. Not on-
ly does registration assure coverage of the equipment under
terms of the Warranty (printed inside the back cover of this
manual), but the user automatically receives any specific
service and modification instructions and firmware updates.
Register online at:
www.inovonicsbroadcast.com/productRegistration
Mounting
The INOmini 674 AM Monitor Receiver is packaged in a
compact ‘clamshell’ chassis that defines Inovonics’ stand-
ardized INOmini module. The unit may simply be set on
top of an existing piece of rack-mounted equipment, as long
as at least 1U of panel space is left open
above
the rack-
mounted ‘host’ to access the receiver. Alternatively, a pair
of mounting holes on the chassis base allows the 674 to be
fastened to the inside of an equipment rack cabinet with
two #4 self-tapping screws.
An available optional rack-mount kit can house up to three
INOmini modules. The kit comes with blanking panels for
unused spaces and with two ‘daisy-chain’ power cables so
that two or three INOmini modules may share a single pow-
er supply.
— 4 —
AC Mains Power
Each Inovonics INOmini module is supplied with an out-
board universal, 90-240VAC switching-type power supply.
As the actual power consumed by the INOmini 674 is
240mA at 12 volts DC, a second DC connector on the rear
panel allows the user to ‘daisy-chain’ INOmini
modules.
This means that two or more units may be fed from the
same AC supply, but with the caution that the total input
power specification of a given assortment of INOmini mod-
ules must not exceed the current rating noted on the power
supply label.
Battery Operation
The INOmini 674 may optionally be powered by either a wet
or a sealed (gel) 12-volt lead/acid battery. The nominal in-
put voltage should never exceed 15V, and protection should
be afforded against voltage surges from charging circuits.
Radio Frequency Interference (RFI)
Although we have anticipated that the INOmini 674 will be
used in a broadcast environment, please do practice reason-
able care in locating the unit away from
abnormally
high RF
fields, especially as mentioned in the next subheading.
Antenna Considerations
Despite the advanced technology afforded by software-
defined DSP receiver architecture, this revolutionary topolo-
gy is not particularly good at rejecting strong signals close
to the target frequency. A strong carrier, even several
channels away from the desired signal, may desensitize the
INOmini 674 to a certain degree.
The 50-ohm
ANTENNA
connector is insulated from the rear
panel to offer a quasi-balanced antenna input. Connect a
whip or wire antenna to the center terminal of the ‘F’ con-
nector, and provide a ground or second ‘counterpoise’ con-
nection to the shell.
As a problem-solving option, Inovonics offers a rugged out-
door, untuned loop antenna with a ‘figure-eight’ pickup pat-
tern that can help null an interfering signal.
