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Section I
INTRODUCTION
Product Description
The INOmini 673 is Inovonics’ second-generation, small
form-factor FM broadcast receiver for station ‘confidence’
monitoring and re-broadcast (translator) service. It receives
standard analog FM broadcast transmissions and also de-
codes and displays program-associated text messaging and
essential metadata from RDS/RBDS data groups.
Product Features
Features of the INOmini 673 Receiver include:
Sensitive and selective DSP-based (SDR) receiver with
extended-band coverage down to 64MHz.
Receives worldwide-standard FM radio broadcasts
and optional associated RDS data.
Easy setup with LCD screen and jog-wheel navigation
of the receiver’s menu tree.
Independently adjustable analog L/R and AES-digital
program line outputs.
Front-panel display of setup parameters, off-air sig-
nal metrics and essential FM RDS information includ-
ing RT+ ‘tagging’ data.
Front-panel alarms with rear-panel ‘tallies’ for RDS
Loss or PI Code Mismatch, Low Signal and Program
Audio Loss.
Accurate front-panel program audio level display.
Front-panel headphone jack with adjustable volume.
When issued, free firmware updates are easily
installed in the field.
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Product Specifications
Tuning Range:
Tunes 64.0MHz-107.9MHz in 100kHz steps.
Antenna Input:
75-ohm (F).
Sensitivity/SNR:
10µV for 50dB monaural S/N; 35dB µV for
70dB monaural S/N.
IF Bandwidth:
Auto (signal-adaptive) or manual selection of
110kHz, 84kHz, 60kHz, 40kHz.
Audio Bandwidth:
15kHz, or may be manually restricted in
steps down to 2kHz.
Program De-Emphasis:
75µs or 50µs, menu-selectable.
FM Stereo Modes:
Stereo, Auto-Blended Stereo (with front-
panel stereo width display), Forced-Mono.
RDS Fields Displayed:
AF, CT, DI, M/S, PI, PS PTY, PTYN, RT
RT+, TA, TP, Groups Received; selectable RDS or RBDS
protocols.
Program Audio Output(s):
Balanced Analog:
(XLR) Left and Right outputs are ad-
justable 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) has adjusta-
ble listening level.
Flashing Panel Alarms:
RDS:
Alarm signals the loss of RDS data or an error be-
tween the received PI code and a user-programmed PI
code entry.
Low Signal:
Alarm and reset trigger levels are inde-
pendently adjustable relative to the RF signal level
display.
Audio Loss:
Alarm threshold is adjustable between 0dB
and –40dB, and alarm delay interval is adjustable be-
tween OFF and 120 seconds.
Alarm Tallies:
Individual open-collector NPN transistor out-
puts for RDS Error, Low Signal and Audio Loss are pro-
grammable for logic polarity.
USB Port:
The front-panel mini-USB port enables easy firm-
ware updates when issued.
