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Section I
INTRODUCTION
Product Description
The INOmini 639 is an FM and FM/HD Radio™ receiver for
professional off-air broadcast monitoring. It receives
standard analog-FM broadcast transmissions as well as
FM/HD Radio digital broadcasts transmitted ‘in-band, on-
channel’ via the FM station’s associated HD1 through HD8
auxiliary digital broadcasting channels.
Analog and digital FM programs are each accompanied by
digitized text and housekeeping data. Analog-FM RDS (Ra-
dio Data System) and digital-HD Radio PAD (Program-
Associated Data) are shown on the INOmini 639 front-panel
LCD display, along with incoming signal quality and other
information. Additionally, RDS and PAD data may be ac-
cessed through the front-panel USB connector for computer
analysis and logging.
A leading feature of the INOmini 639 is that it does
not
au-
tomatically revert to FM reception if the digital signal is lost.
This is of critical importance to the broadcaster, but makes
this product somewhat unsuited to general consumer use.
Product Features
Features of the Receiver include:
Reception of all standard FM and FM-band HD Radio
broadcasts.
Easy setup using the LCD screen and jog-wheel navi-
gation of the receiver’s menu tree.
Direct display of RT+ ‘tagging’ data.
Analog L/R and AES-digital program line outputs.
Front-panel alarms with rear-panel ‘tallies’ for Carrier
Loss, Digital Program Loss and Audio Loss.
Accurate front-panel program audio level display.
Front-panel headphone jack.
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Product Specifications
Tuning Range:
87.5MHz–107.9MHz in 100kHz steps
HD Radio Channels
: Selectable HD1 through HD8
Antenna Input:
75-ohm (F)
Receiver Sensitivity:
10µV for 50dB monaural FM SNR
Audio Response:
Analog FM Mode:
±1dB, 30Hz–15kHz; de-emphasis is
75µs or 50µs, menu-selectable
HD Radio Mode:
±0.25dB, 20Hz–20kHz
Analog Line Output:
L/R balanced (XLR); level adjustable
between –15dBu and +15dBu from the front panel.
Digital Line Output:
AES3 (XLR); 44.1kHz sampling rate;
level adjustable between –30dBFS and 0dBFS from the
front panel.
Headphone Jack:
front-panel (TRS) 3.5mm; volume is ad-
justable from the front panel.
Alarms:
Carrier Loss, Digital Loss, Audio Loss; NPN transis-
tor saturations to ground with menu-programmable log-
ic polarity.
Power Requirement:
12VDC at 230mA (2.1mm x 5.5mm
coaxial); a universal inline switchmode power supply is
provided.
Mounting Options:
An optional rack adapter accepts up to
three INOmini modules in a 1U, 19-inch rack space. The
Receiver 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.
