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Section I
INTRODUCTION
Product Description
The INOmini 674 is an off-air receiver for standard, medi-
um-wave analog radio broadcasts, specifically targeting pro-
fessional ‘confidence-monitoring’ applications.
The front-panel, back-lighted LCD display is host to various
menu screens, which facilitate easy setup of the INOmini
674, and also display various parameters of received signal
quality.
Product Features
Features of the INOmini 674 include:
A sensitive and selective DSP-based receiver tunes in
either 10kHz (Americas) or 9kHz (European)
increments.
The large, multicolor-backlighted LCD screen and jog-
knob facilitate easy setup and navigation of the
receiver’s intuitive menu trees.
You get an accurate display of received signal
strength and audio levels.
Simultaneous analog and AES-digital program line
outputs have independent audio level controls.
Programmable front-panel alarms with rear-panel
‘tallies’ indicate Low Signal and Audio Program Loss
conditions.
674 firmware is easily updated in the field.
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Product Specifications
Tuning Range:
Tunes 520kHz-1710kHz in 10kHz steps or
531kHz-1611kHz in 9kHz steps.
Antenna Input:
Transformer-isolated 50-0hm (F) input; a
passive outdoor loop antenna is optionally available.
Sensitivity/SNR:
10µV for 50dB S/N; 1mV for 60dB S/N.
Audio Bandwidth:
Selectable 6kHz, 4kHz, 3kHz, 2kHz (ap-
prox. –6dB point); see graph on Page 13.
De-Emphasis:
NRSC (‘truncated’ 75µs) or OFF (flat).
Program Audio Output(s):
Balanced Analog:
(XLR) balanced “dual monaural” Left
and Right, adjustable from –15dBu to +15dBu in 0.1dB
steps.
AES Digital:
(XLR) output at 44.1kHz is adjustable from
–30dBFS to 0dBFS in 0.1dB steps.
Front-Panel Headphone Jack:
(3.5mm TRS) with adjusta-
ble listening level.
Flashing Panel Alarms:
Low Signal:
Alarm and reset trigger levels are adjustable
relative to the RF signal level display.
Audio Loss:
Alarm threshold is adjustable between 0dB
and –30dB; delay interval is adjustable between OFF
and 120 seconds.
Alarm Tallies:
Individual open-collector NPN transistor
outputs for Low Signal and Audio Loss are programma-
ble for logic polarity.
USB Port:
A front-panel mini-USB port enables easy firm-
ware updates.
Power Requirement:
12VDC at 275mA; a universal 90-
240VAC inline switching power supply is provided.
Mounting Options:
An optional rack adapter accepts up to
three INOmini modules in a 1U, 19-inch rack space. The
INOmini 674 may also be fastened to any convenient
surface with two small screws.
Size and Weight:
1.6”H x 5.5”W x 5.5”D; 4 lbs. shipping
weight.
