Power-Off Bypass; Master Bypass; Bypass Mode Remote Monitor - Nielsen 1000-1161 Series Equipment Manual

Equipment Manual: Encoder 1000-1161
Document #: 1050-1475
Revision: F

3.3.1. Power-Off Bypass

If there is no power applied to the SGE, an internal relay automatically routes the audio input
connectors directly to their respective output connectors, and all input signals pass through the SGE
unchanged.

3.3.2. Master Bypass

While the SGE is powered, pushing the front panel Bypass/Enable push button to the 'out' position
causes the SGE to bypass encoding. This effectively routes the audio input connectors to their
corresponding output connectors.
Certain software diagnostic fault detections (including a high temperature warning) can cause the unit
to place itself in bypass mode automatically. In this case, the LCD displays a message describing the
nature of the problem, and the Encoding Status LED on the front panel will change depending on the
nature of the problem.
When the SGE is in bypass mode with no errors, the Encoding Status LED on the front panel remains
dark, and the LCD displays "Bypass Mode Encoder Disabled."

3.3.3. Bypass Mode Remote Monitor

In addition to providing status information via the front panel LCD display and encoding status LED
indicator, the Encoder provides a means to enable remote monitoring of its status. This is provided
via the DB9 connector on the rear panel of the Encoder. The 3-wire connection will allow another
device to monitor both bypass mode conditions (power off, Enable/Bypass push button position, error
condition) and encoding conditions (normal power-up, bypass mode, enable mode). See Step 8 in
Section 2 for pin-out information.
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