9-10 www. m oxa. com Terminal Servers > 9 Terminal Servers NPort® 6250 Series NPort® 6250 Series The 2-port NPort® 6250 device servers use the SSL and SSH protocols to transmit encrypted serial data over Ethernet. Models are available for connecting to a 10/100BaseT(X) copper Ethernet or The NPort® 6250 device servers help guarantee reliability by providing users with secure serial-to-Ethernet data transmission and a customer- oriented hardware design. If the Ethernet connection fails, the NPort® 6250 will queue all serial data in its internal 64 KB port buffer. When 100BaseT(X) fiber network. Both single-mode and multi-mode fiber are supported. the Ethernet connection is re-established, the NPort® 6250 will immediately release all of the data in the buffer in the order that it was received. Users can increase the port buffer size by installing an SD card. 2-port RS-232/422/485 secure terminal servers Specifications Overview Zero Data Loss if Ethernet Connection Fails › ›Secure operation modes for Real COM, TCP Server, TCP Client, Pair Connection, Terminal, and Reverse Terminal › ›Nonstandard baudrates supported with high precision › ›Choice of network medium: 10/100BaseT(X) or 100BaseFX › ›Enhanced remote configuration with HTTPS and SSH › ›Port buffers for storing serial data when the Ethernet is offline › ›Supports IPv6 › ›Generic serial commands supported in Command-by-Command mode Ethernet Interface Number of Ports: 1 Speed: 10/100 Mbps, auto MDI/MDIX Connector: 8-pin RJ45 Magnetic Isolation: 1.5 kV built-in Optical Fiber Interface (NPort 6250-S-SC/6250-M-SC) 100BaseFX Multi-Mode Single-Mode Fiber Cable Type OM1 50/125 μm G.652 800 MHz*km Typical Distance 4 km 5 km 40 km Wave- length Typical (nm) 1300 1310 TX Range (nm) 1260 to 1360 1280 to 1340 RX Range (nm) 1100 to 1600 1100 to 1600 Optical Power TX Range (dBm) -10 to -20 0 to -5 RX Range (dBm) -3 to -32 -3 to -34 Link Budget (dB) 12 29 Dispersion Penalty (dB) 3 1 Note: When connecting a single-mode fiber transceiver, we recommend using an attenuator to prevent damage caused by excessive optical power. Note: Compute the “typical distance” of a specific fiber transceiver as follows: Link budget (dB) > dispersion penalty (dB) + total link loss (dB). Serial Interface Number of Ports: 2 Serial Standards: RS-232/422/485 Connector: DB9 male RS-485 Data Direction Control: ADDC® (Automatic Data Direction Control) Console Port: Serial port 1 doubles as RS-232 console port Serial Communication Parameters Data Bits: 5, 6, 7, 8 Stop Bits: 1, 1.5, 2 Parity: None, Even, Odd, Space, Mark Flow Control: RTS/CTS, DTR/DSR, XON/XOFF Baudrate: 50 bps to 921.6 kbps (supports nonstandard baudrates) Pull High/Low Resistor for RS-485: 1 kΩ, 150 kΩ Serial Signals RS-232: TxD, RxD, RTS, CTS, DTR, DSR, DCD, GND RS-422: Tx+, Tx-, Rx+, Rx-, GND RS-485-4w: Tx+, Tx-, Rx+, Rx-, GND RS-485-2w: Data+, Data-, GND Memory Expansion Slot Slot Type: SD slot (supports up to 2 GB) Software Network Protocols: ICMP, IPv4/v6, TCP, UDP, DHCP, BOOTP, Telnet, DNS, SNMP V1/V2c/V3, HTTP, SMTP, ARP, PPPoE Security Protocols: DES, 3DES, AES, SSH, SSL Configuration Options: Web Console, Serial Console, Telnet Console, Windows Utility Windows Real COM Drivers: Windows 95/98/ME/NT/2000, Windows XP/2003/Vista/2008/7/8/8.1/10 (x86/x64), Windows 2008 R2/2012/2012 R2 (x64), Windows Embedded CE 5.0/6.0, Windows XP Embedded