Temperature Guidelines; Rack Mounting; Powering Up Your Dp/4 In A Midi Set Up - ENSONIQ DP/4 Musician's Manual

Introduction
Temperature Guidelines
The inner workings of the OP / 4 contain a substantial amount of computerized and electronic
circuitry that can be susceptible to damage when exposed to extreme temperature changes.
When the OP
/4
is brought inside after sitting in a cold climate (i.e. the back seat of your car),
condensation builds up on the internal circuitry in much the same way a pair of glasses fogs up
when you come inside on a cold day. If the unit is powered up as this condensation occurs,
components can short out or be damaged. Excessively high temperatures also pose a threat to the
unit, stressing both the internal circuits as well as the case. With this in mind, it is highly
advisable to follow these precautions when storing, mounting and setting up your OP /
4:
• Avoid leaving the OP / 4 in temperatures of less than 50 degrees Fahrenheit or more than 100
degrees Fahrenheit.
• When bringing the OP / 4 indoors after travel, allow the unit at least twenty minutes to reach
room temperature before powering up. In the case of excessive outdoor temperatures (below
50 degrees Fahrenheit or above 100 degrees Fahrenheit), allow an hour or more before power
up.
• A void leaving the OP / 4 inside a vehicle exposed to direct sunlight.
Rack Mounting
Because the OP / 4 operates with an internal transformer, there is a certain amount of heat
generated by this unit. For better reliability, we recommend that you do not install this unit
beneath devices that are sensitive to heat, or above power amps, tube equipment, or other rack-
mount units that emit a lot of heat.
Powering Up Your DP/4 In a MIDI Set Up
iv
Just as you would power up the individual components before turning on the amplifier in your
home stereo system, you should first tum on the MIDI data transmitting source (processors,
keyboards, modules, etc.) before you power up the receiving MIDI source. For instance, if you're
using the DP / 4 to receive MIDI information from a keyboard/ sequencer, you would tum the
keyboard on before the OP / 4. This will prevent any unwanted MIDI information from being
"spit" out of the transmitting source (keyboard/sequencer) during power up, which could
confuse the MIDI receivers, thereby disabling them. If this should occur, tum off the receiving
module, and then tum it back on.
ENSONIQ
DP/4
Musician's Manual