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Alignment
D/ESAM 820 User’s Guide
Analog Input Alignment, Assy. #04-0160-01
D/ESAM’s Analog Input Module (Assy. #04-0160-01) accepts eight balanced or
unbalanced audio signals. The figure below shows the adjustment locations:
1
2
3
4
5
6
7
8
1
2
3
1
2
3
-5
GND +5
+15
Gain
Trims
Resistor
Networks
ANALOG INPUT MODULE
04-0160-
-15
Input Terminations
(Terminating Resistors)
Analog Input Module (Assy. #04-0160-01)
Each pair of inputs on the module can be set for an operating level of -10dBu to
+14dBU. Operating levels are changed by replacing resistor networks (socketed),
which are available from GPS. Use the table below to select the appropriate resistor
network:
Analog Input Range (Assy. #04-0160-01)
Resistor
Network
Adjustment
Range
10K
-10dBu – 0dBu *
20K
-4dBu – +6dBu
50K
+4dBu – +14dBu
Notes:
* 0 dBu equals 0.775V RMS.
Each input can be terminated by installing a terminating resistor (¼ Watt, 1%, 150
Ω
or 600
Ω
standard values) on the module at locations 2R1 - 5R2.
The Analog Input Module has been factory aligned. Adjustments should not be
required unless reference level or the digital pad has been changed for particular
inputs or components have been replaced.
