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Section I
INTRODUCTION
Product Description
The INOmini 661 is Inovonics’ second-generation, small
form-factor off-air monitoring receiver for EBU-specified
DAB and DAB+ digital radio transmissions. It provides
high-quality confidence monitoring and delivers a dual au-
dio feed with independently-adjustable analog and AES digi-
tal audio outputs.
Text metadata that accompanies the broadcast is presented
in multiple menu levels on the front-panel display. The
large, lighted LCD screen also shows pertinent signal quality
metrics and audio levels. Front-panel and remote alarms
indicate transmission problems, and the compact size al-
lows the mounting of three units in a 1U rack space.
Product Features
Features of the INOmini 661 Receiver include:
Sensitive and selective DSP-based (SDR) receiver for
EBU Band III DAB and DAB+ digital broadcasts.
Easy front-panel setup uses jog-wheel navigation of
the receiver’s intuitive menu tree.
Independently adjustable analog L/R and AES-digital
program line outputs.
Front-panel display of program metadata, audio lev-
els, setup parameters and off-air signal metrics.
Front-panel flashing alarms with rear-panel ‘tallies’
for DAB Loss, Low Signal and program Audio Loss.
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:
DAB Band III, Mode 1 (174.928MHz-
239.200MHz; all EBU-sanctioned frequency allocations
(Blocks 5-12, A-D) plus Block 13 A-F.
Antenna Input:
75-ohm (BNC).
Sensitivity:
10µV for error-free reception.
Audio Codecs:
MPEG-1, Audio Layer 2 (MP2); HE-AAC
(AAC+).
Audio Response:
±0.25dB, 20Hz-20kHz.
Signal Parameters Displayed:
FQ (FIC Quality), RF (RSSI),
SNR, CNR.
Metadata Displayed:
Ensemble Label, Component List & ID,
Service List & ID, Dynamic Label, PTY, Sample Rate, Bit
Rate, Gain Mode, Service Mode, Protection Info, Current
CU & Address, Country, Language, Time & Date.
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:
DAB Loss:
Fixed metrics determine loss of digital radio
reception.
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
outputs for DAB Loss, Low Signal and Audio Loss are
programmable for logic polarity.
USB Port:
The front-panel mini-USB port enables easy firm-
ware updates when issued.
