Orban OPTIMOD-FM 8700, Operating Manual

Page: 284 / 390

4-8
MAINTENANCE ORBAN MODEL 8700i
Set Input to .................................................................................. analog
Analog Ref. Level ...................................................................... +4.0 dBu
Clip Level ................................................................................. +20.0 dBu
Right Channel Balance .................................................................. 0.0 dB
DI REF VU................................................................................ 15.0 dBFS
c) Navigate to the
I
NPUT
/O
UTPUT
> O
UTPUT
1
screen, Set controls as in the table
below:
Analog Out Level .................................................................... +10.0 dBu
Analog Output Source ............................................................... Xmitter
Analog Preemphasis .......................................................................... Flat
AES 1 Out Level ........................................................................ 2.8 dBFS
AES 1 Out Source ........................................................................ Xmitter
Sample Rate ............................................................................... 44.1 kHz
AES 1 Preemphasis ............................................................................. Flat
Word Length ........................................................................................ 20
Dither .................................................................................................. Out
`
d) Navigate to the I
NPUT
/
OUTPUT
U
TILITIES
screen. Set the Multiplex Power
Threshold control to Off .
e) Navigate to S
YSTEM
S
ETUP
. Select T
EST
M
ODES
. Then Activate Bypass mode:
Navigate to the B
YPASS
button and press E
NTER
. Set controls as in the table
below:
Mode ............................................................................................ Bypass
Frequency ...................................................................................... 400 Hz
Mod Level ....................................................................................... 100%
Mod Type ........................................................................................... L+R
Bypass Gain ....................................................................................... 0 dB
NOTE: Bypass defeats all compression, limiting, and program equalization
but retains the selected preemphasis (either 50

s or 75

s).
2. Test the power supply
Number of Red Flashes Problem With
1 + unregulated supply
2 +15V or –15V
3 +5V or –5V
4 +5V Digital
5
Analog

Digital ground connection broken,
or one of the two supplies is not connected to
the AC line
6 DSP A +3.3V supply
7 DSP B +3.3V supply
8 CPU +3.3V supply
9 CPU +2.5V supply
Table 4-1: Decoder Chart for Power Supervisor