Users’ Guide: Networked Receiver Controller - NRC-2.0.1 PAGE 12
11th October 2005 Copyright © 2005 Aegis, Inc wwww.aegis-inc.net [ph. 240-568-9006]
Step 1: Receiver Audio Signal Termination Type
The NRC supports both differential and single-end audio signals, with the factory system default
being configured to support Differential Mode.
If Single-End mode is required, proceed as follows:
1. Ensure the NRC is powered off
2. Remove the top cover of the NRC.
3. Locate the two banks of 4x DIP switches, D1 and D2.
4. Set all switches to the ON position for single-ended operation.
a. Conversely, set each switch to the OFF position for differential operation.
5. Replace the cover and install the screws.
Note: The NRC software’s default configuration is to support Differential Mode,
and hence it must also be configured to match the desired audio signal state. The
NRC Configuration section will address this requirement.
Step 2: Rack Mount the NRC unit
The NRC chassis supports Jonathan Type 375QD-20 chassis slides and these are recommended
for rack mounting the NRC where necessary.
Note: It is not recommended that the NRC Chassis be solely mounted in 19” rack by bolts
through the chassis’ front panel - rack slides or rack shelving recommended.
Step 3: Connect Power
The supplied power cable should connect the power adapter on the back panel power socket of
the NRC. The NRC power supply is an auto-sensing unit which can accept voltages between
100-240VAC @47-63Hz.
Step 4: Connect Receivers
Each brand and model of receiver has specific configuration and installation instructions that
must be followed prior to operation with the NRC. Please refer to Appendix A.
Step 5: Optional - Connect an External Clock
If an external clock connection is desired for A/D synchronization, use a coaxial cable to connect
a 16 KHz TTL (50% duty cycle) external clock signal to the EXT CLK port on the NRC’s back.
The NRC’s default configuration uses the internal clock and hence the system needs to be re-
configured to use an external signal for A/D synchronization. This can be achieved after the
Hardware Installation through the NRC Java client’s “Global NRC Properties” dialog, or via the
programmers’ SDK.
Step 6: Connect to the Network
A Cat-5 cable should be used to connect between the ETH port on the back panel of the NRC
and the local area network.