Analog Audio Output; Aes3 Digital Input And Output - Orban Optimod-FM 8300 Operating Manual

OPTIMOD-FM DIGITAL

If the output of the driving unit is unbalanced and does not have separate
C G
HASSIS ROUND
the black wire to the common (–) or ground terminal of the driving unit.

Analog Audio Output


Electronically balanced and floating outputs simulate a true transformer output.
The source impedance is 50. The output is capable of driving loads of 600 or
higher; the 100% modulation level is adjustable with the AO 100% control over
a –6 dBu to +24 dBu range. The outputs are EMI suppressed.

If an unbalanced output is required (to drive unbalanced inputs of other equip-
ment), it should be taken between pin 2 and pin 3 of the XLR-type connector.
Connect the L
organization's standards) to circuit ground; take the H
maining pin. No special precautions are required even though one side of the
output is grounded.

Use two-conductor foil-shielded cable (Belden 8451, or equivalent).

At the 8300's output (and at the output of other equipment in the system), do
not connect the cable's shield to the CHASSIS GROUND terminal (pin 1) on the
XLR-type connector. Instead, connect the shield to the input destination. Con-
nect the red (or white) wire to the pin on the XLR-type connector (#2 or #3) that
is considered H
to the pin on the XLR-type connector (#3 or #2) that is considered L
standards of your organization.

AES3 Digital Input and Output

There is one AES3 input and one AES3 output. The program input and output are
both equipped with sample rate converters and can operate at 32, 44.1, 48, 88.2,
and 96 kHz. The AES3 output can be switched to emit either the FM processed or HD
(digital radio/netcast) processing signal. (See step (8.J) on page 2-29.)
Per the AES3 standard, each digital input or output line carries both the
left and right stereo channels. The connection is 110 balanced. The
AES3 standard specifies a maximum cable length of 100 meters. While
almost any balanced, shielded cable will work for relatively short runs (5
meters or less), longer runs require used of 110 balanced cable like
Belden 1800B, 1801B (plenum rated), multi-pair 180xF, 185xF, or 78xxA.
Single-pair category 5, 5e, and 6 Ethernet cable will also work well if you
do not require shielding. (In most cases, the tight balance of Category
5/5e/6 cable makes shielding unnecessary.)
The AES3id standard is best for very long cable runs (up to 1000 meters).
This specifies 75 unbalanced coaxial cable, terminated in BNC connec-
tors. A 110/75 balun transformer is required to interface an AES3id
connection to your Optimod's digital input or output.
and (–) (or L ) output terminals, connect both the shield and
OW
pin of the XLR-type connector (#3 or #2, depending on your
OW
by the standards of your organization. Connect the black wire
IGH
INSTALLATION
output from the re-
IGH
by the
OW
2-7