INTRODUCTION
The RD1024 Digital Delay is used for speaker distance delay. With the extra
memory it may even be used as part of a broadcast profanity delay. The RD1024
is housed in a single rack space chassis.
PLEASE NOTE: THIS MANUAL ASSUMES THE USER HAS A WORKING
KNOWLEDGE OF BASIC AUDIO CONNECTION AND OPERATION
PRINCIPLES.
DESCRIPTION
FRONT PANEL
pwr
INPUT LEVEL LEDs: Indicate the amount of input signal level, in decibels.
INPUT LEVEL: Adjusts the amount of input signal.
OUTPUT LEVEL: Adjusts the amount of output signal.
DIP SWITCHES: Set the delay time
JUMPER: for setting the maximum delay X 4 if extra RAM has been installed
PWR: Indicates that the RD1024 has power and the power switch is in the ON
position.
REAR PANEL
OUT
IN
- +
- +
MODEL RD1024
120 VAC
50/60 Hz 15 VA
SERIAL NUMBER
1024-
WARNING:
To reduce the risk of
electric shock or fire, do not expose
this device to rain or moisture.
CAUTION:
To reduce the risk of
electric shock do not remove lid. No user
serviceable parts inside. Refer servicing
to qualified service personnel.
RISQUE DE CHOC - NE PAS ENLEVER
MADE IN U.S.A
OUT: The “+” sign indicates the positive or non-inverting terminal, and the “-”
indicates the negative or inverting terminal. Use these, along with the Ground
terminal for a balanced output.
IN: The “+” sign indicates the positive or non-inverting terminal, and the “-”
indicates the negative or inverting terminal. Use these, along with the Ground
terminal for a balanced input. When using the inputs / outputs unbalanced, be
sure to use the + and GROUND terminals.
OPERATION
Setting the Input and Output levels
Use the LED bargraph for setting the input level. With a typical sound level input,
set the Input level as high as possible so the 0 dB LED is on approximately all
the time, and the red +16 dB LED lights occasionally - only on the highest peaks.
Set the output level to drive the power amp or signal processing that follows the
delay. The input level range is from -infinity to unity gain. Remember to run the
input level as high as possible without clipping to achieve the highest signal to
noise ratio. The output level is from minus infinity to 15dB.
OPERATION Cont.
Selecting the Delay range
The number of switches in the up position determines the delay time + 4 mS.
Each switch to the left doubles the delay time and you add the number of
switches up delay times to calculate the total delay then add 4 mS. The Switch
positions are 4 8 16 32 64 128 256 512 mS
Figuring the Time Delay
Time delay in milliseconds (mS) is figured by adding the DIP switch OFF (Switch
Up) positions then add 4.
Example, If the 4 and 64 switches are up and the rest down then the delay time
is
4 + 64 + 4 = 72 milliseconds of delay time.
SCHEMATIC