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Tuesday, March 24, 2009

highpoint RocketMate 1200 IDE-ESATA hard dsik case 支持RAID 热拔插 串行 硬盘盒RAID卡












highpoint RocketMate 1200 IDE-ESATA hard dsik case 支持 roid 串行 硬盘盒


工包 无附件


系统参数 接口 e.SATA 支持驱动器数目(个) 2个3.5英寸 ATA硬盘 存储容量(TB) -- 独立通道数目(个) 2 数据传输速度(MBps) 150 处理器(MHZ) -- 缓存(MB) -- 主机总线 -- 总线速度(MHZ) -- 板卡连接器 -- 支持操作系统 Windows/Linux/FreeBSD 质保时间(年) -- 功能补充 * 高性能数据传输 * 支持热插拔

火箭highpoint rocketmate 1100 IDE-ESATA hard disk case 硬盘盒









工包 52个  无包装 ,无附件.

esate接口 




HighPoint RocketMate 1100

HighPoint RocketMate 1100

RocketMate 100是鋁製的外接盒,因此能為硬碟提供相當良好的散熱效果。不過你還是要注意硬碟的溫度。溫度越高,硬碟壽命越短。

RocketMate 1100令我們相當驚艷。它所有的連接埠和控制元件都位於後方。HighPoint在盒上標示了數據連線埠,因此你不用擔心錯把USB連接埠當作Firewire連接埠。不過盒上只有一個Firewire連接埠,因此你必須以序列方式連接裝置。關於只設置一個Firewire連接埠的原因目前尚無法得知。

HighPoint RocketMate 1100

HighPoint RocketMate 1100


HighPoint RocketMate 1100(續)

HighPoint RocketMate 1100(續)

HighPoint RocketMate 1100(續)

我們在測試期間使用目前最快速的硬碟-具有8 MB快取記憶體的WD800JB。此機型是單碟版本。頂級的WD2500JB硬碟就有3片碟片。

HighPoint RocketMate 1100(續)




208-pins的LQFP封装




Marvell的88i8030 SATA桥接芯片,这颗芯片是Marvell的高速I/O接口卡家族成员,可以把PATA接口转变成Serial
ATA接口,支持150MBps的数据传输率。




88i8030的架构图,它包括了链路,传输层,PHY层,内置了FIFO寄存器,PHY采用时钟锁相环提供基准工作频率。





RocketRAID  1640的包装盒


RocketRAID 1542




HighPoint RocketRAID 1542卡的设计基本和上面那片RocketRAID 1640是一样的,不过它把那个内置的Serial
ATA接口改成了外置接口,它支持Serial ATA RAID 0,0+1和JBOD。




卡的背面没有什么元器件





型号是HighPoing RocketRAID 1542




RocketRAID 1542包装盒


HighPoint RocketMate 1100




和RocketRAID 1542配套的是一个Serial
ATA外置硬盘盒,对于USB,1394硬盘盒我们已经非常熟悉了,但是Serial
ATA硬盘盒还是一个新鲜的事物,它得益于串行传输线的高效率和抗干扰能力,Serial
ATA硬盘线很纤巧,允许较长的传输距离,这也使得把它用于外置硬盘盒成为可能。HighPoint RocketMate
1100硬盘盒采用了铝合金外壳,可以使用3.5英寸的IDE硬盘。硬盘盒上有醒目的Serial
ATA标记,虽然是外置盒,但是它和内置硬盘使用同样的接口,因此数据传输率不会打折扣,这是和USB与IEEE1394外置硬盘盒不一样的地方。




HighPoint RocketMate 1100硬盘盒的背面有12V DC输入端口,Serial ATA电缆的接口,这个并不是我们常见的SATA端口,而是为外置接口盒进行改进的端子,外观有点象IEEE1394接口,它可以更加稳固的连接SATA电缆。





内部结构,可以抽取出来的硬盘安装架




同样使用了Marvell的SATA桥接芯片




电源适配器




专用的连接线





RocketMate 1100包装盒


RocketRAID产品的BIOS




开机进入BIOS设置界面,它可以识别出接口上的硬盘设备,所在通道,设备名称,组名以及容量。要注意的是,Serial
ATA只使用每个通道的Master接口,从这也可以看出,这块卡的BIOS是由于来ATA RAID卡修改而来的。




设置菜单中包括了,设置和移去启动标记,所用设备模式和组名




你可以设置通道的使用的协议类型





这个是查看选项,可以检查端口,设备,RAID Array和逻辑设备


性能测试


测试平台









































CPU Athlon XP 2400+
主板 七彩虹 C.NF400 Pro nForce2 Ultra400+MCP-T
内存 宇瞻 DDR400 256MB×2,5-3-3-2.5
硬盘 希捷酷鱼四 40G FAT32

希捷酷鱼 SATA V,ST3120023AS×2

显卡 丽台A350
操作系统 英文Windows XP Professional + SP1
驱动 DirectX 9b,ForceWare 53.03WHQL For XP,nForce 3.13
For XP
桌面设置 1024×768像素 32bit色彩 85Hz刷新率


HD Tach 2.70




RocketRAID 1640性能测试,RAID0,Strip(区块)大小是2MB
,这是这片RAID卡提供的最大Strip设置选项,一般来说Strip设置的大适合大尺寸的文件存取,如在游戏和视频压缩应用中,Strip小更加适合小块的文件存取,如应用在WEB服务器和数据库中。




RocketRAID 1640,RAID0,Strip(区块)大小256KB





RocketRAID 1640,RAID 1


PCMark03磁盘性能测试




RocketMate 1100硬盘盒PCMark03成绩




RocketMate 1100硬盘盒性能测试




相同硬盘,PATA测试性能



HighPoint的Serial ATA产品给我们提供了很好的升级选择,HighPoint的产品线很丰富,今天介绍的几款就各有特色,RocketRAID
1640支持的RAID模式最多,而且管理起来很方便。RocketRAID 1542提供了两个外置的SATA端口,它和RocketMate
1100硬盘盒是很好的搭档,HighPoint SATA移动硬盘提供了与内置硬盘相同的性能,是对移动硬盘性能有高要求用户的最佳选择。

Sunday, March 22, 2009

HP 10mhz E1938A Quartz Oscillator for







The HP E1938A is a very modern ovenized SC-cut quartz oscillator of radical design that had little or no product release due to project cancellation. As far as I know it was the first new oscillator designed by HP since the venerable 10811A. The performance of the E1938A is truly outstanding.


more information from Here.


Regards
Bob

Raymarine raystar 120 gps for sell





Receiver type: Raystar 112LP: GPS, 12 parallel channels
Raystar 120: SD-GPS, WAAS/EGNOS/MSAS ready, 12 parallel channels
Frequency: 1575.42 MHz ±1 MHz (C/A code), L1
Sensitivity: -130 dBm
Signal acquisition: Automatic
Time to first fix (TTTF): <>
Position accuracy: Raystar 112LP: <15>
Raystar 120 (with WAAS/EGNOS/MSAS): <3>
HDOP <>
Speed accuracy: 0.1 kts RMS (L1, C/A code HDOP <>
Geodetic datum: WGS-84 (227 selectable alternatives)
Power requirement: NMEA versions: 9 V to 30 V NMEA @ 1.5 Watts
SeaTalk versions: 9 V to 18 V SeaTalk @ 1.5 Watts
Data input/output: NMEA versions: NMEA 0183 Ver2.3 output; non-isolated NMEA input; 
RTCM SC-104 Ver 2.1 input.
SeaTalk versions: SeaTalk bus; RTCM SC-104 Ver 2.1 input
Operating conditions: temperature range: -10°C to 70°C (14°F to 158°F)
water protection: waterproof to CFR46
Storage conditions: temperature range: -10°C to 70°C (14°F to 158°F)
Cable length: 10 m (33 ft)
Dimensions:  diameter: 95 mm (3.7 in)
height: 30 mm (1.2 in); 62 mm (2.4 in) with pole mount kit
Weight: 0.435 kg (15.3 oz)
Memory backup: Lithium battery (10 year life)
CE approvals - conforms to: 89/336/EC (EMC), EN60945:1997

Raymarine Raystar 112LP GPS for sell




Summary of Features
Receiver type: 12 Parallel channels
Frequency: 1575.42 MHz +/- 1 MHz
(C/A code), L1
Sensitivity: -130dBm
Signal acquisition: Automatic
Time to first fix: 15 minutes maximum,
typically 2 minutes
Position accuracy: 15m  RMS. (L1, C/A code
HDOP <2.5>
Speed accuracy: 0.5m/s RMS. (L1,  C/A code
HDOP <2.5>
Geodetic Datum: WGS-84
(190 alternatives programmable)
Cable length: 10m (33ft)
Operating Temp.: -10 to 700
C (14 to 1580
F)
Storage Temp.: -10 to 700
C (14 to 1580
F)
Data Input/Output:
NMEA Version NMEA0183   V2.3 Output
Non-isolated NMEA Input
RTCM SC-104 Version 2.1 Input
SeaTalk Version SeaTalk Bus
RTCM SC-104 Version 2.1 Input
Memory Backup: Lithium battery (10 year life)
Disposal Note: Care should be taken when disposing of this equipment



Saturday, March 21, 2009

CrystalClear CS4297-jq


FEATURES
n AC’97 1.03 Compatible
n Industry Leading Mixed Signal Technology
n 18-bit stereo full-duplex Codec with fixed 48 kHz 
sampling rate
n Four analog line-level stereo inputs for connec-
tion from LINE IN, CD, VIDEO and AUX
n Two analog line-level mono inputs for speaker-
phone and internal PC Beeper
n Mono microphone input switchable from two 
external sources
n High quality differential CD input
n Dual Stereo line level outputs
n Extensive power management support
n Meets or exceeds Microsoft’s
?
PC’97 and PC’98 
audio performance requirements.
DESCRIPTION
The CS4297 is a AC’97 1.03 compatible stereo au-
dio Codec designed for PC multimedia systems.
Using the industry leading CrystalClear delta-sig-
ma and mixed signal technology, the CS4297
paves the way for PC’97-compliant desktop, porta-
ble, and entertainment PCs, where high-quality
audio is required.
The CS4297, when coupled with a DC’97 PCI au-
dio accelerator such as the CS4610, implements a
cost-effective, superior quality, two-chip audio so-
lution. The CS4297 Audio Codec ’97 and CS4610
PCI Audio Accelerator are the first members of the
SoundFusion family of advanced PCI audio prod-
ucts for next generation multimedia PCs. 
ORDERING INFO
CS4297-KQ, 48-pin TQFP, 9x9x1 mm
CS4297-JQ, 48-pin TQFP, 9x9x1 mm

Philips NXP S87C751-4DB 80C51 8-bit microcontroller family 2K/64 OTP/ROM, I2C, low pin count - NXP


NEW in package.




300 psc