Figure 1 shows the type of switches and their settings when the drive was shipped.
Figure 1 Setting Switch (SW1,SW2) Switch SW1
Select SCSI ID Keys 1 2 3 SCSI ID OFF* OFF* OFF* 0 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
SCSI data bus parity check Key 4 ON* Checked OFF Not checked SCAM mode Key 5 ON Enabled OFF* Disabled Device type mode Key 6 ON Optical memory device (INQ='07') OFF* Direct access device (INQ='00') This determines what response the drive will give to an INQUIRY command. Spindle automatic stop mode Key 7 ON Enabled OFF* Disabled
With the disk loaded, the spindle continues to rotate until the START/STOP u nit command instructs the spindle to stop. The spindle automatic stop function comes into operation when the host does not issue a command for about 30 minut es. If the host issues a command after the spindle has stopped then the spindl e will start up and process the command without posting a not ready state. - This function greatly reduces the amount of dust that can collect on the dis k, however it is not suitable for a system which requires a quick response as the spindle takes several seconds to get up to speed. - The access monitoring time and the function itself can be changed or enabled via a MODE SELECT command.
LED mode Key 8 OFF* Mode1 ON Mode2
Mode1 The LED lights when drive is positioning, reading, writing, loading,e jecting and during the power on test. At power-on test the LED will blink at 1 second intervals after detecting an error or 2 second intervals having detecte d a themal error. Mode2 The LED lights only on power-on test and whilst waiting. Error detect ion and reporting is as for Mode1.
Switch Bank SW2
Write cache mode. Key 1 ON Enabled OFF* Disabled When enabled,a write error is reported at the completion of the next command. This can speed up write times but do ensure your system will respond correctly by knowing what data to resend.
Verify mode Key 4 ON Disabled OFF* Enabled When disabled,the performance of a write operation is improved by approximatel y 20%, however data integrity cannot be guaranteed.
Mac mode Key 3 ON Enabled OFF* Disabled Because of the differing ways that both Apple Macintosh and PC hosts respond t o the status of the drive, set this switch accordingly. Mac mode ON will disab le the 'UNIT ATTENTION' reporting on power up and media change.
SCSI level Keys 5 2 OFF* OFF* SCSI-1 mode ON OFF SCSI-2 mode OFF ON Not used (setting inhibited) ON ON Not used (setting inhibited)
SAVE DATA POINTER message mode Key 6 OFF* The SAVE DATA POINTER message is sent before the DISCONNECT message ON The SAVE DATA POINTER message is not sent before DISCONNECT messeage
Terminal CNH1
SCSI Terminating Power 1-2 3-4 Function SHORT* SHORT* Power is supplied from both of the drive and TERMPWER pin. SHORT OPEN Power is supplied from the drive only. (TERMPWER pin is not used.) OPEN SHORT Power is supplied from TERMPWR pin only. (Drive's power supply is not used.) OPEN OPEN Not used SCSI Active Terminator Module on Drive PCA 5-6 SHORT* Enabled OPEN Disabled Note that there is no removable terminating resistor module on this drive. All termination functions are set through this terminal.
Terminal CNH2
*1:This signal indicates that the cartridge is in the drive.
H:Exist L:None(TTL level signal)
*2:This signal is used for ejecting the catridge from the host system
*3:For the LED, the following specification must be satisfied.
Format current:20mA or less
Note:The cable length must not exceed 30cm.
Figure 2 External operator panel circuit example
External operator panel connector Pin Signal 1 CTGIN (Catridge in) 2 -ID2 (bit value 4) 3 +LED (+5V) 4 -ID1 (bit value 2) 5 -LED 6 -ID0 (bit value 1) 7 EJSW (Eject switch) 8 COMMON 0 9 Device type mode 10 Spindle automatic stop mode 11 Macintosh mode 12 COMMON 1 13 Verify Mode 14 SCSI type 0 15 SCSI terminating resistor 16 0V(Ground)
The cable length to the operator panel should not exceed 30 cetimetres COMMON 0 and COMMON 1 are control signals and should not run to ground.