Allen&Heath Scepter USER GUIDE - Manual (Page 34)

Audio Owner Manual Section 4
DC POWER CONNECTOR
male XLR for connection to Allen Heath power supply unit. MPS-8R is
normally supplied with the Scepter, but an MPS-9, or RPS-1 with the
proper cable can also be used. Your warranty will be void if a power supply not
supplied or approved by Allen Heath is used.
The Scepter is designed to allow. the user to lift the chassis from the audio
ground. This is useful in rack mounting situations since the rack rails may be at a
different potential than the audio ground. This can cause ground loops. By allowing
the chassis to be lifted from the audio ground, the ground loops can usually be
eliminated. See the USER CONFIGURED OPTIONS section for this procedure.
DC connector (For Reference only)
. volts 500mA
Pin 2 ................................. 0 volts (Audio ground)
Pin 3 ................................. 0 volts (Audio ground)
Pin 4 ................................. 5 volts 500mA
Pin 5 ................................. volts
Shell ................................. Chassis
Chassis connection tied to Pin 3 (Audio gnd, Ovolts) with 22 Ohm link.
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