Main Functions Applicable standard USB Revision 2.0 Speed The speed is automatically recognized/switched between high speed (480 Mbps), full speed (12 Mbps), and low speed (1.5 Mbps). Data record method Data can be recorded on the hard disk of the PC in byte units. Recording capacity Log of max. 20 GB can be recorded to PC. (Data can be sequentially saved to 10 files of 2 GB.) 512 MB built-in buffer memory PC interface USB 2.0 port (B connector x 1) I/O terminals USB 2.0 ports (A connector x 1 and B connector x 1) Indicators (LED) USB-BUS HI: Lights when connected to a high-speed device. FULL: Lights when connected to a full-speed device. LOW: Lights when connected to a low-speed device. RESET: Lights when the bus is reset. SUSPEND: Lights during idle status. LOGGING FULL: Lights when the built-in buffer memory becomes full. EMPTY: Lights when the built-in buffer memory still has some empty space. Other POWER: Lights when power is ON. READY: Lights when the SB-2020 is ready for operation. DATA STREAM: Lights when data streams through the USB bus to be logged. Display packets OUT, IN, SOF, SETUP, DATA0, DATA1, DATA2, MDATA, ACK, NAK, STALL, NYET, PRE, ERR, PING, SPLIT Statistical information Number of transactions, number of transferred bytes, average transfer rate Filter function Online IN-NAK transaction not captured, OUT-NAK transaction not captured, SETUP-NAK transaction not captured, PING transaction not captured, address and endpoint Offline SOF not displayed, collective display of NAK transaction to be repeated, SETUP display only, PING transaction not displayed, IN-NAK transaction not displayed, OUT-NAK transaction not displayed, SETUP-NAK transaction not displayed, address and endpoint Search SOF, Error Packet (CRC/PID error), SETUP-Token, IN-Token, OUT-Token, PING-Token, ACK, NAK, STALL, NYET, specified address or endpoint, no communication time exceeding a specified period Mark & jump Up to 99 marks can be set for each log file. Jump to set marks and enter comments for each mark. Packet time measurement High-precision time and frame period are supported. Frame period: High speed: in micro frame units (0.125 ms) Full speed: in frame units (1 ms) Low speed: not displayed High-precision time measurement is (5 hours max. in 16.7 ns units) possible at all communication speeds. Trigger Packet trigger Address, endpoint, SETUP, IN, OUT, PING, ACK, NAK, STALL, NYET, data packet (binary, decimal, hexadecimal, or string) Error trigger Bit stuffing error, CRC error, PID error Sequential triggers Up to 16 triggers can be set. Pre-trigger size 1/1, 1/2, 1/4, 1/8, 1/16, 1/32, 1/64, and 1/128 of 512 MB can be set. Comments Up to 1,024 bytes (512 two-byte characters) can be entered for each log file. Power supply 100 V to 240 V AC, 50/60 Hz, Max. 18 VA Size & weight Approx. 145 (W) x 45 (H) x 192.5 (D) (mm), approx. 1 kg Accessories (qty.) Software CD-ROM (1), AC power cable (1), USB cables (2), Instruction manual (1) Environment Operating temperature: +5°C to +40°C, 80% RH or less (no condensation), Storage temperature: 0°C to +55°C

Detailed Display Device requests Standard device requests CLEAR_FEATURE, SET_FEATURE, SET_ADDRESS, GET_DESCRIPTOR, SET_DESCRIPTOR, GET_STATUS, GET_CONFIGURATION, SET_CONFIGURATION, GET_INTERFACE, SET_INTERFACE, SYNCH_FRAME Class-specific device requests HUB class, HID class, Audio class, Communication class, Mass Storage/Bulk-Only Transport specific, Printer class, USBTMC class specific Descriptors Standard descriptors Device Descriptor, Configuration Descriptor, Interface Descriptor, Endpoint Descriptor, String Descriptor, Device Qualifier Descriptor, Other Speed Configuration Descriptor, Interface Power Descriptor, Interface Association Descriptor, Debug Descriptor, OTG Descriptor USB device descriptors HUB class, HID class, Audio class, Communication class Command interpret display   Mass Storage/Bulk-Only Transport command (Full support of SubClass Code = 05H, SFF-8070i; and SubClass Code = 06H, SCSI transparent command set) Packets Special Packet name, PID, split type, hub address, hub port, target device speed, data division, endpoint, CRC (check) Token Packet name, PID, address, endpoint, CRC (check) Data Packet name, PID, payload (size), CRC (check) Handshake Packet name, PID

Controller PC PC PC/AT compatible with Pentium® III 500 MHz or higher or equivalent (Pentium IV 2 GHz or higher recommended) Memory 256 MB or more Hard disk drive Approx. 3 MB or more free space for software installation. Sufficient free space for communication log is also required. Display XGA (1024 x 768) or higher resolution recommended USB port USB 2.0 (high-speed) port recommended (The Microsoft EHCI driver must be supported.) Operating System (OS) Windows® XP Professional SP2, Windows XP Home Edition SP2, Windows 2000 Professional SP4

*	Some PC/AT compatible machines may "incorporate the PC manufacturer's original specifications" or "implement a new architecture", which may not operate even if all the above specifications are satisfied.

Note 1. Pentium is a trademark or a registered trademark of Intel Corporation or its subsidiaries in the United States and other countries. Note 2. Windows is either a registered trademark or a trademark of Microsoft Corporation in the United States and/or other countries.