User manual TANDBERG SDLT220-320 INTEGRATION

[. . . ] TANDBERG Super DLT TM Design & Intergration Guide Revision 1 June 2002 - 432588-01 SDLT 220 and SDLT 320 Design & Integration Guide Copyright Copyright © 2002 by Tandberg Data. Document Origination: Oslo, Norway. Trademarks Quantum, the Quantum logo, DLTtape, the DLTtape logo, Super DLTtape and the Super DLTtape logo are trademarks of Quantum Corporation registered in the U. S. A. Laser Guided Magnetic Recording (LGMR) and Pivoting Optical Servo (POS) are trademarks of Quantum Corporation. Other company and product names used in this document are trademarks, registered trademarks, or service marks of their respective owners. Legal Disclaimers The information contained in this document is the exclusive property of Tandberg Data. [. . . ] These values are calculated from the average of Peak-ripple-current + 2 sigma, measured at +5% DC voltage. The Max-Rms value is the average of the maximum RMS current drawn during this operating mode. These values are calculated from the average of RMS current + 3 sigma, measured at nominal DC voltage. The typical current is calculated from the average of all RMS current drawn during this operating mode, measured at nominal DC voltage. The Max DC power is calculated from the typical DC power + 3 sigma, measured at nominal DC voltage. This value takes into account that the peak currents on the 5V and 12V do not occur at the same time. The Typical DC power is calculated from the average RMS DC power drawn during this operating mode, measured at nominal DC voltage. This value also takes into account that the peak currents on the 5V and 12V do not occur at the same time. The Max AC power is calculated from the typical AC power in tabletop drives + 3 sigma. The Typical AC power is calculated from the average of AC power drawn in tabletop drives. The motor start modes draw the most current from the 12V supply, so they are shown separately. These events last < 1 second and occur at a duty cycle of less than 25%. The Max values for each mode are based on the Max-rms values, since the peak values are of very short duration. CHAPTER 3: Electrical Specifications 3. 2 Power Supply Tolerances One of the functions of the power supply is to transform the AC power to DC, and to step the voltage down from 115/220 Vac to 5 Vdc and 12 Vdc. 3. 2. 1 Voltage Tolerances Voltage tolerances are: · · 5 Vdc ± 5% 12 Vdc ± 5% 3. 2. 2 DC Voltage Monitoring The tape drive will monitor the two input voltages and take protective measures when the voltages fall or rise beyond the below specified ranges: Table 3-2. DC Voltage Monitoring Low Voltage Trip Point 4. 75 Volts 11. 4 Volts Supply Voltage 5 Volt 12 Volt 3. 2. 3 Power Cycle Time Test results show that an SDLT drive is able to power up and perform reliably with up to 11 seconds of delay time between the 5V and the 12V source. The drive is also able to power up and perform successfully with rise times of up to 11 seconds on either the 5V and the 12V supply (while the other is stable). CHAPTER 3: Electrical Specifications 3. 2. 4 Supply Transient Voltage Allowable power supply transient voltage is: · · 5 Volt rail ­ 60 mV (peak to peak) 12 Volt rail ­ 1. 6 V (peak to peak). CHAPTER 4 Thermal Specifications 4. 1 Over Temperature Condition This chapter presents the results of extensive experimentation and measurements of drive temperatures, and the resultant impact on SDLT 220/320 drive performance. An Overtemp condition is defined to be when the calculated Tape Path Temp = 52 degrees C. At that point, the tape is rewound, unloaded, and ejected if not in a library. CAUTION: Although the Overtemp condition occurs when the Tape Path Temp = 52 degrees C, Quantum recommends the operating environment of the drive be maintained such that the temperature of the tape path not exceed 50 degrees C; this provides a 2 degrees C margin of safety. The front temperature sensor is the point used to calculate drive temperature (even though it is not the hottest point inside the drive). The calculated Tape Path Temp for the SDLT 220/320 drive is derived using the following formulas: · · Embedded bezel Tape Path Temp = Front Sensor Temp + 3 degrees C Library bezel Tape Path Temp = Front Sensor Temp + 6 degrees C If not in a library, and if the drive temperature exceeds the operating threshold, any current tape operation is aborted, the tape is rewound, unloaded, and ejected from the drive. SCSI status then indicates that the drive is in the over temperature condition. CHAPTER 4: Thermal Specifications If a SCSI command is aborted as a result of the over-temperature condition, the drive returns status of: Hardware Error, Warning -- Specified Temperature Exceeded (04h, 0Bh, 01h). 4. 2 Air Flow Measurements Air flow is measured in the location shown in Figure 4-1. At the specified location, the air flow needs to be at least 125 LFM (linear feet per minute). Measure Air Flow Inside the Gray Area Figure 4-1. [. . . ] When doing a firmware update, take reasonable precautions to prevent a power failure. CHAPTER 7: Updating the Firmware 7. 2. 1 Firmware (Code) Update Troubleshooting This section lists common behaviors that you may notice as you update the tape drive's firmware. For example: · Updating the same revision If a code update is requested and the code revision being updated is the same as the code revision already in the unit, the system updates controller code but not servo-specific code. The steps for this type of update are the same as for a normal update. · Updating fails, which causes the drive to be reset; the problem can result from any of the following circumstances: Cartridge contains incompatible update image. No cartridge in the drive. CHAPTER 7: Updating the Firmware CHAPTER 8 Insertion and Extraction Guidelines 8. 1 Applicable Library Commands The following lists of commands are provided for customers who are using library interface commands to communicate with the drive. [. . . ]