Ross DRA-8204, Руководство пользователя

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3–2 • User Controls DRA-8204 User Manual (Iss. 05)
Card Overview
This section provides an overview of the DRA-8204 components. The DRA-8204 is a dual
channel Distribution Amplifier, and will only have components installed into the
CHANNEL A
and B sections of the card-edge. Channel C is not applicable to the DRA-8204.
Figure 3.1 DRA-8204 — Card-edge Controls
1. Card Control (JP1)
JP1 selects whether the Output Mute and Output Channel Configuration jumper settings are
respected or ignored by remote control settings. Using Figure 3.1 , the card labeling, and the
following descriptions, select one of the following options on JP1 :
• REMOTE — the local jumper settings are ignored and the card is configured remotely.
• LOCAL — the local jumper settings are respected and card is controlled locally. The
card controls and status can be read remotely but not changed (default setting).
2. Loss of Signal (JP2)
Using Figure 3.1 , the card labeling, and the following descriptions, select one of the following
options on JP2 to enable or disable the Loss of Signal option:
• MUTE — a channel’s outputs will be muted if the input signal degrades to the point that
the input EQ can no longer guarantee error-free performance. When the red ERROR LED
is on, the outputs will be muted.
• If you have input channels set to any rate other than Auto mode, we recommend this
jumper position. The output of the card would then mute if an incorrect data rate is
applied to the input, or if the input signal became too weak for the input equalizer to
compensate for.
• NO MUTE — a channel’s outputs will work to the limits of the input stage (default
setting).
3. BNC 2 and 4 Configuration (JP3)
Using Figure 3.1 , the card labeling, and the following descriptions, select one of the following
input channels on JP3 to output:
• A — BNCs will output the signal input on Channel A (default setting).
• B — BNCs will output the signal input on Channel B.
1) Card Control (JP1) 4) BNC 3 and 5 Configuration (JP4) 7) Channel B Rate Selection Button
2) Loss of Signal (JP2) 5) BNCs 6-10 Configuration (JP5) 8) Bootload Button
3) BNC 2 and 4 Configuration (JP3) 6) Channel A Rate Selection Button
Note
—
This setting applies to control of the jumpers only. Card-edge buttons and
switch settings can be configured remotely or locally in either setting
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