True-systems PRECISION 8i User Manual download pdf (Page 10)

PRECISION 8i

OPERATION MANUAL

must be of the same type. AC mains power cord must be removed to gain access to

Fuse Drawer 1 for fuse replacement.

BALANCED OUT

1-8

(4-40)

LINK

CONNECT

ONLY

PSU-P8i

DO NOT DISCONNECT

WITH AC POWER ON

S/N

Sunrise Engineering and Design Inc.

TRUE Systems - Precision 8i

Tucson, Arizona USA

Signal Ground Connection: LINK 3 connects signal ground to earth ground. Signal

ground is isolated from earth ground if the LINK jumper is removed. This jumper will

normally be installed. See “Troubleshooting” section for usage tips.

Output Cable Connection: For ease of connection, we’ve provided two styles of

balanced output connector: 8-channel DB25 and individual TRS 4 . Both output types

are electrically equivalent and may be used simultaneously to connect to Line Inputs on

mixing consoles, recorders, etc. If both pairs of outputs are used, care should be taken

to avoid system ground loops. See “Troubleshooting” section for tips on avoiding hum

caused by grounding problems.

The DB25 and TRS output connectors are not electronically isolated. Therefore, if you

chose to connect either one of the output connectors to an unbalanced input, the other

connector will automatically be unbalanced. When connecting an output of the

PRECISION 8i to an unbalanced input, you must connect the negative signal pin (pin

3 of the XLR or “ring” of the TRS) to the shield. Failure to do this will result in audible

distortion.

The wiring configuration used for the output connectors on the PRECISION 8i is:

For TRS:

 Tip is positive (+)

 Ring is negative (-)

 Sleeve is shield

For DB25:

This output connector is wired

according to the Tascam 8-channel

analog wiring configuration. DO NOT

USE TDIF CABLES.

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True-systems PRECISION 8i User Manual Page 10