Orban OPTIMOD-FM 5700i, Operating Manual

Page: 36 / 335

1-10
INTRODUCTION ORBAN MODEL 5700i
Level control of the AES3 input is accomplished via software control through System
Setup (see step 5 on page 2-28) or through PC Remote.
Both analog and digital outputs are active continuously.
The 5700i’s output sample rate and 19 kHz pilot tone frequency can be locked to the
5700i’s internal crystal clock, to the sample rate present at its AES3 input, or to a
compatible reference signal (10 MHz or 1 x wordclock) applied to the sync reference
input.
The 5700i can apply J.17 de-emphasis to signals received at its digital input and J.17
pre-emphasis to the processed signal emitted from its digital output.
2
Analog Left/Right Input/Output
The left and right analog inputs are on XLR-type female connectors on the rear pan-
el. Input impedance is greater than 10k
Ω
; balanced and floating. Inputs can accom-
modate up to +27 dBu (0 dBu = 0.775Vrms).
The left and right analog outputs are on XLR-type male connectors on the rear pan-
el. Output impedance is 50
Ω
; balanced and floating. The outputs can drive 600
Ω
or
higher impedances, balanced or unbalanced. The peak output level is adjustable
from –6 dBu to +24 dBu.
Level control of the analog inputs and outputs is accomplished via software control
through System Setup (see step 3 on page 2-26 and step 10 on page 2-30) or
through PC Remote.
Stereo Analog Baseband Composite Output
The stereo encoder has two unbalanced analog baseband outputs on two BNC con-
nectors on the rear panel. Each output can be strapped for
0
or 7
5Ω
source imped-
ance and can drive up to 16dBu (
±
13.82V peak) into 7
5Ω
in parallel with up to
0.047
μ
F (100ft/30m of RG-59/U cable) before any significant audible performance
degradation occurs.
See the footnote on page 1-16 and refer to Figure 2-3 on page 2-9.
Independent level control of each output is available via software (see step 6 on
page 2-28.
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J.17 is a 6 dB/octave shelving pre-emphasis/de-emphasis standard with break points
at 400 Hz and 4 kHz. It is used mainly in older studio/transmitter links that use
NICAM technology. The 5700i’s provisions for J.17 make it fully compatible with sys-
tems using this standard.