TRUE Systems PRECISION 8i User Manual
Page 8

PRECISION 8i
OPERATION MANUAL
8
Mounting
The 
PRECISION 8i is designed for conventional rack mounting, or stand-alone
mounting by use of the adhesive rubber feet supplied. Avoid locating the unit next to 
equipment that emits strong electromagnetic fields. If the unit is to be permanently 
mounted in a high-vibration environment, you may wish to provide additional side or 
rear support to prevent possible distortion of the mounting ears.
 Do not locate the unit where it is exposed to rain, moisture, or liquid spills.
 Do not locate the unit where it is exposed to temperature extremes.
 Do not mount the Power Supply Unit closer than one rack space from the 
preamp unit. This avoids coupling unwanted magnetic interference into the 
preamp unit.
Ventilation
We recommend that you provide adequate ventilation so that the air temperature 
surrounding the unit does not exceed 55
C (122F). If multiple units are to be mounted
in a poorly ventilated rack or travel case, a 1 3/4” blank space should be located after 
every two units (two units mounted together, blank space, two more units, etc.).
OPERATION
Connections
PSU-P8i
240
1
AC Mains Connection: Prior to connecting the AC mains power cord to the 
Power Supply Unit, verify that the Voltage Selector is set for the AC mains 
voltage in your area. The currently selected voltage appears in the window 
on the Fuse Drawer 1 . It is important that the voltage is set correctly for both safety 
reasons and to insure that the 
PRECISION 8i will operate according to specifications.
Note also that the correct fuse type must be used. See Table below. Product damage 
caused by incorrect voltage settings or fuse selections cannot be covered under 
warranty.
