Emulator bypass, Solo input mode, Unity gain mode – Dolby Laboratories DP570 User Manual

Page 51: 14 emulator bypass, 15 solo input mode, 16 unity gain mode, Figure 4-8, Table 4-6

Using the DP570 Features

Emulator Bypass

Dolby

DP570 Multichannel Audio Tool User’s Manual

Table 4‐6 describes the electrical characteristics.

4.14 Emulator Bypass

When you enable Emulator Bypass, the front‐panel

Esc

button is illuminated. In this

mode, the only settings that affect the output are the router settings. Monitoring options
are limited to program selection. If you are using the

Lt/Rt Input

, that signal is sent, without

decoding, to the Left and Right emulator outputs. Bass management remains active.

4.15 Solo Input Mode

The DP570 provides a two‐channel analog input that can be routed to the analog outputs.
This input is called

Solo

because the feature provides a way to route a standard signal from

a mixer (such as the mixer’s solo bus output) into the monitor chain. The feature can also
be useful as a general‐purpose analog bypass.

Solo Input mode bypasses the digital audio inputs, and only the solo inputs from the

Analog I/O

connector on the back panel route to the Left and Right outputs. If the Mono

speaker output is selected, the input signals are summed and fed to the

Mono

output.

The

Solo

input is available only by driving the Solo Control line on the

GPI/O

port. The Solo

Control line (pin 6) is level‐triggered and is active in the high state. The status of the

Solo

input displays on the front‐panel

Solo

LED and is indicated on the Solo Tally line (pin 5)

on the

GPI/O

port.

4.16 Unity Gain Mode

Unity Gain mode defeats the audible effects of dialogue normalization while allowing the
dialnorm value to be used in choosing dynamic range control settings. It is valuable when
the emulator outputs of the DP570 are returned to the console for use as monitor inputs.

Unity Gain mode is enabled by default. To turn Unity Gain mode off:

Click Setup in the Main window to open the Setup window.

2. Uncheck the Unity Gain Mode box on the left side near the bottom.

Figure 4‐8 shows a detail of the Unity Gain Mode box on the Setup window.

Figure 4-8

Unity Gain Mode Box

Table 4-6 Shaft Decoder Signal Electrical Characteristics

Characteristic

Min

Max

VT+ Positive‐going input threshold voltage

1.2 V

2.1 V

VT– Negative‐going input threshold voltage

0.5 V

1.4 V

VH Hysteresis voltage

0.4 V

1.5 V