Imagine communications DAC6800 plus BCA4, Инструкция по установке и эксплуатации

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DAC6800
+
BCA4 and DAC6800
+
BCA4Z Installation and Operation Manual 25
Chapter 3: Operation
Analog Audio Output Level Offset
The Analog Audio Output Level Offset parameter attenuates all analog
audio outputs simultaneously. Using this parameter, you can achieve
analog audio output levels beyond what can be achieved using the
analog level jumpers (see
“Setting Jumpers ‘A’, ‘B’ and ‘C’ for Analog
Level Options” on page 12 ). This parameter has a range of -5.0 to 0 dB
in 0.5 dB steps.
Table 3-1 illustrates the card-edge control and range of the OP Level
Offset parameter.
For example, to set an analog output level of +15 dBu for a digital input
audio level of 0 dBFS, use a combination of analog audio level jumper
settings and adjustment of the
OP Level Offset parameter.
1. Set jumpers 'A', 'B' and 'C' to set the analog audio output level to
+16 dBu (see section "Setting Jumpers 'A', 'B' and 'C' for Analog
Level Options"). For this setting, refer to Figure 2-3 on page 14 of
your
DAC6800
+
BCA4 and DAC6800
+
BCA4Z Four Channel
Digital to Analog Converters Installation and Operation Manual .
2. Adjust the OP Level Offset parameter to -1.0 dB. Use either a
remote control application (e.g. PilotLite, Pilot or Navigator) or
card-edge control to adjust the parameter to this setting.
The combination of these two settings will achieve an analog audio
output level of +15 dBu for a digital input audio level of 0 dBFS.
Note
For information on using
card-edge controls, please refer
to “Understanding Card-Edge
Controls” on page 39 of your
FR6802
+
Installation and
Operation Manual .
Table 3-1. Parameter Options—DAC6800
+
BCA4 and
DAC6800
+
BCA4Z
Bank,
Rotary
Switch
Parameter Function Options
0,1 OP Level Offset Applies attenuation to
analog audio output
levels -5.0 to 0.0 db
(steps of 0.5 dB)