NetWave DirectView Broadcast Console Operations & Technical Manual
Revision A
2 - Installation
Harris Broadcast
2-34
PR&E
Channel Logic I/O and Peripherals
In the basic peripheral logic connection example (Table 2-5 and Figure 2-46), active low logic is used, thus
Tally & Pulse Common is connected to the logic ground on the peripheral device (labeled Command Common
on the Denon CD player in the example). In the complex logic example (Table 2-6 and Figure 2-47), active
high logic is used, thus Tally & Pulse Common connects to +5 VDC.
Note: This voltage is more typically supplied directly by the peripheral device to prevent ground
loops, but in this example the peripheral is using isolated connections.
Peripheral devices can turn off the channel through the Ready logic input. This input performs not only an
audio reset to turn off the channel, but it can also control the Off button LEDs when the Off LED parameter is
active on that channel. Otherwise, the Off LEDs turn on automatically at channel Off.
Clock-Timer Interface
An external event timer reset command is on the Clock-Timer PCA (J4, pin 3). It connects to a studio or
external location Event Timer so that it can be reset by the console’s timer reset logic.
This connector has an external timer reset input that is typically not used in this application. A momentary
low on pin 1 resets the Event Timer. This connector also has the input for a master clock signal on pins 5
and 6. The ESE, SMPTE, and Remote Timer Reset subsection covers this connection.
Connection Guides
This subsection gives examples of these typical connections and parameter settings:
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A mic with a mic remote panel
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A CD player with remote logic
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A computer playback system
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The connections to a VistaMax audio management system
Note: To isolate the NetWave console from peripheral devices, use only the isolated control logic
connections. The +5 VDC and logic ground connections are referenced to the console’s
power supply and ground. These should only be connected to isolated devices like mic
control panels or other Harris Broadcast Accessory Panels. Connecting these to non-
isolated devices may result in a ground loop between the console and peripheral.
