Orban OPTIMOD-FM 5500 Operation Manual page 66

2-18
INSTALLATION
If you are sending the analog output of the 5500 through a digital link
that uses lossy compression (like MPEG, APT-X, or Dolby), set the output
.
Lossy codecs cannot handle pre-emphasized signals.
F
LAT
12. Set digital output to be flat or pre-emphasized.
(See the notes in step 10 above.)
A) Press the Next button.
B) [Skip this step if you will not be using the digital output.]
Turn the knob to choose P
J.17 (for a J.17 pre-emphasized output), P
emphasis cascaded with J.17 pre-emphasis), or F
75µs de-emphasis after the processing).
Regardless of the setting of this control, the processing is always internally pre-
emphasized and thus always controls peaks to follow the 50 or 75µs pre-emphasis
curve.
13. Set the digital output sample rate.
A) Press the Next button.
B) [Skip this step if you will not be using the digital output.]
Turn the knob to set the Digital O
or 96 kHz.
The internal sample rate converter sets the rate at the 5500's digital output. This ad-
justment allows you to set the output sample rate to ensure compatibility with
equipment requiring a fixed sample rate. In all cases, the 5500's fundamental sample
rate is 32 kHz, ensuring that the output bandwidth is always strictly limited to 16
kHz and that the processed signal can be passed through a 32 kHz uncompressed
STL without addition of overshoot.
If the DO S
/ D O
IGITAL
be defeated. To set this control internally you must have the P
set to Internal and the DO S
14. Prepare to set output levels.
A) Press the Next button.
You can use either program material or tone to set the output level (and
thus, the on-air modulation).
 To use tone, press the Y
You must use tone if you are setting up
the 5500 as a stand-alone stereo encoder.
 To use program material, press the N
(for a 50 or 75µs pre-emphasized output),
-
RE E
UTPUT
and P controls have been previously set in the IO
S
YNC ILOT YNC
calibration screens, the O
UT
set to P
YNC
button.
ES
ORBAN MODEL 5500
+J17 (for 50 or 75µs pre-
RE
(which applies 50 or
LAT
S R to 32, 44.1, 48, 88.2,
AMPLE ATE
control might
S R
UTPUT AMPLE ATE
.
S
ILOT YNC
button.
O
S
ILOT YNC