Optimod-AM 9400 V1.2 Operating Manual - Orban
Optimod-AM 9400 V1.2 Operating Manual - Orban
Optimod-AM 9400 V1.2 Operating Manual - Orban
- No tags were found...
You also want an ePaper? Increase the reach of your titles
YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.
2-10<br />
INSTALLATION ORBAN MODEL <strong>9400</strong><br />
range. Loading the output with 600 will decrease the output level by 4.0 dB<br />
compared to a high impedance (bridging) load and will reduce the maximum<br />
available output level by 4.0 dB. A software switch in Analog Output screen allows<br />
the output level calibration to be set for a bridging or 600 load.<br />
<br />
<br />
<br />
If an unbalanced output is required (to drive unbalanced inputs of other equipment),<br />
it should be taken between pin 2 and pin 3 of the XLR-type connector.<br />
Connect the LOW pin of the XLR-type connector (#3 or #2, depending on your<br />
organization’s standards) to circuit ground; take the HIGH output from the remaining<br />
pin. No special precautions are required even though one side of the<br />
output is grounded.<br />
Use two-conductor foil-shielded cable (Belden 8451, or equivalent).<br />
At the <strong>9400</strong>’s output (and at the output of other equipment in the system), do<br />
not connect the cable’s shield to the CHASSIS GROUND terminal (pin 1) on the<br />
XLR-type connector. Instead, connect the shield to the input destination. Connect<br />
the red (or white) wire to the pin on the XLR-type connector (#2 or #3) that<br />
is considered HIGH by the standards of your organization. Connect the black wire<br />
to the pin on the XLR-type connector (#3 or #2) that is considered LOW by the<br />
standards of your organization.<br />
AES3 Digital Input and Output<br />
There is one AES3 input and two AES3 outputs (for two transmitters; any output can<br />
alternatively be configured for digital radio / netcasts). The program input and output<br />
are both equipped with sample rate converters and can operate at 32, 44.1, 48,<br />
88.2, and 96 kHz.<br />
Per the AES3 standard, each digital input or output line carries both the<br />
left and right stereo channels. The connection is 110 balanced. The<br />
AES3 standard specifies a maximum cable length of 100 meters. While<br />
almost any balanced, shielded cable will work for relatively short runs (5<br />
meters or less), longer runs require used of 110 balanced cable like<br />
Belden 1800B, 1801B (plenum rated), multi-pair 180xF, 185xF, or 78xxA.<br />
Single-pair category 5, 5e, and 6 Ethernet cable will also work well if you<br />
do not require shielding. (In most cases, the tight balance of Category<br />
5/5e/6 cable makes shielding unnecessary.)<br />
The AES3id standard is best for very long cable runs (up to 1000 meters).<br />
This specifies 75 unbalanced coaxial cable, terminated in BNC connectors.<br />
A 110/75 balun transformer is required to interface an AES3id<br />
connection to your <strong>Optimod</strong>’s digital input or output.<br />
The digital input clip level is fixed at 0 dB relative to the maximum digital<br />
word. The maximum digital input will make the <strong>9400</strong> input meters display<br />
0dB. The reference level is adjustable using the DI REF control.<br />
The <strong>9400</strong> is a “multirate” system; its internal sample rate is 32 kHz and<br />
multiples thereof (up to 512 kHz). The output is strictly band-limited to<br />
16 kHz. Therefore, the output can pass through a 32 kHz uncompressed