Voyager 3000 User Guide
3-4
Switch
Signal Name
Description
Default Setting
SW1
ID2
Address Bit 2
Setting is
SW2
ID1
Address Bit 1
position
SW3
ID0
Address Bit 0
dependent
SW4
Sync
Spindle Sync
Off
SW5
DLYSEN
Drive Spinup Enable
On
SW6
DLYSON
Drive Spinup Delay
Off
SW7
Term Pwr 1
Termination Power
Enable Bus One
On
SW8
Term Pwr 1
Termination Power
Enable Bus Two
On
SW1
à
SW3 are used to set the I
2
C bus ID. A device with address 0 is designated as the
master. Any other ID caused the EMU to appear as a slave device. Table 3-2 lists the ID
setting for the EMU.
Table 3-2 ID settings for the EMU
SW1
SW2
SW3
EMU ID
Off
Off
Off
0 (Master)
Off
Off
On
1
Off
On
Off
2
Off
On
On
3
On
Off
Off
4
On
Off
On
5
On
On
Off
6
On
On
On
7
SW4 is used to enable drive spindle synchronization.
SW5 and SW6 are used to control drive spinup sequencing.
If SW6 is set off then SW5 will control drive sequencing. If SW5 is off then power up
sequencing is
disabled
. If SW5 is set to on then power up sequencing will be
enabled
if only
one PSU is available
10
otherwise no power sequencing will occur.
If SW6 is on then delayed power sequencing will always occur regardless of the setting of
SW5. Table 3-3 summarizes these signals
10
This situation may occur if a PSU has failed or the system has been set up with only one PSU configured.
Table 3-1 EMU Switch Settings
