HP 9000 Series Service Manual

Chapter 11 11-25
SCSI Peripherals and I/O Information
• MTBF = 50,000 power on hours at a 12% duty cycle
• Executes self-test at power on
• Inquiry Vendor Identification String = HP
• Inquiry Product Identification String = C2478SZ (C1504B)
• Inquiry Product Revision Level String = 1009
Jumpering
Setting the SCSI ID. Figure 11-6 shows the rear view of the C2478SZ.
Figure 11-6 C2478SZ Jumper Diagram
There are three significant bits in the ID, giving an ID range of 0 to 7 inclusive as shown:
Table 11-13 SCSI ID
1 = shorted, 0 = open
The C2478SZ reads the SCSI ID at power up and during selftest in order to determine the selected
target ID of the tape drive on the interface bus. The C2478SZ will provide termination power for the
SCSI termination resistors if a jumper is set across the two pins marked Term power in Figure 11-6.
SCSI ID Bit 2 Bit 1 Bit 0
0 000
1 001
2 010
3 011
4 100
5 101
6 110
7 111

HP 9000 Series Specifications

General

Brand	HP
Model	9000 Series
Category	Server
Language	English