VCS Specifications

Greenleaf ViewComm II: Specifications

Specs Common to VCS Async II and Ethernet II (Version 6.6)
System Requirements	PC or laptop with Pentium or higher processor. 32 Mb RAM, 16 Mb hard disk space plus space for your capture files

Operating Systems	Windows 2000, XP, and Server 2003

Capture Modes	Buffer or buffer to hard disk. Capture file size limited only by drive.

Character Sets	ASCII, 7-bit ASCII, EBCDIC, Baudot

CRC Methods	Choose from 18 methods including Checksum, CRC-16, CRC-32, CCITT, HDLC, Modbus

Numeric Event Display Formats	Hex, decimal, octal, binary

Non-character Events	List of Event Types with symbols

Timestamp Options	Absolute or Relative. Resolutions from 1.68 seconds down to under 1 μSec. Display variable from 0 to 6 decimal places.

About Capture Files	Capture files are in a proprietary (CFA) format; however with ProtocolWorks, you can create text-based capture files and compile to CFA format and de-compile CFA to text.

Statistics View	Session, Resettable, and Buffer modes. Data, Errors, Frame Size breakdown, Data rate, Frame rate, Utilization, much more. Graphs available for some panes.

Protocol Decode Lists	Click for list of protocols

Greenleaf ViewComm Async II
Data Interfaces	RS-232 or software selectable RS-422/485 using bundled Quatech hardware. Converters may also be used for line protocol choices

Operating Modes	Single & Dual Port Monitoring, source DTE, source DCE

Protocol Decodes	Async PPP, PPP, SLIP, TCP/IP with auto-traverse, Modbus ASCII and Modbus RTU, custom. List of decodes. With the included VCS ProtocolWorks, you can define and refine custom protocols or modify existing decodes.

Baud Rates	Up to 921.6 Kbps, including user-specified rates, with bundled or supported hardware. Best practice: Buy a ViewComm Async II Bundle - click here.

Bit Order	LSB first (normal) or MSB first (reversed setting)

Flow Control	RTS/CTS or DTR/DSR hardware handshaking or XON/XOFF software flow control. User may define XON and XOFF characters.

Parity	None, Even, Odd, Mark, Space

Word Length	5, 6, 7, or 8 bits

Stop Bits	1, 1 1/2, or 2

Serial Ports	One or two serial ports, depending upon test configuration. Supports COM1 through COM64.

Serial Hardware	Normal 16550 or higher. 16650 works but characters may not be received in proper sequence. We recommend not using 16650. Recommendation: Buy a bundle, not just the software. This gets you 921.6 Kbps performance, PCMCIA or PCI, one or two ports, RS-232 or RS-422/485 with highly reliable drivers developed in conjunction with the board maker (Quatech). The Quatech boards use 16750 UARTs which have 64 byte depth in the FIFOs. NOTE: ViewComm Async II has a setting whereby you can select FIFO depth as set in Windows or an optimal setting for protocol analysis work (typically the depth would be 1, which assures that no two events can have the same timestamp when you use fine resolution such as sub-microsecond timestamp resolution. This is not required in all cases but is recommended for most test setups.

Boards Supported	List of known compatible (and incompatible) hardware
ViewComm for Ethernet Specifications
Ethernet Flavors	VCS Ethernet recognizes over 250 varieties of Ethernet frames. Click here to see an overview of ViewComm Ethernet II

Protocols Supported	TCP/IP with auto-traverse, IPX, ARP, 502.x, more. See list of protocols decoded. With VCS ProtocolWorks feature, you can define and refine custom protocols or modify existing decodes.

Interface	VCS for Ethernet interfaces with most Network Interface Cards. If more than one is installed, you can choose from a drop-down menu.
About Pro Models
Pro Models Are...	...Obsolete unless you just gotta have one. Plus, Pro, and HS options are standard in ViewComm Async II
Cables for VCS Async and Classic
VCS Cable Configuration Guide	Illustrated Cable Guide shows test configurations.

Upgrading from Classic	Illustrated VCW Cable Guide You can use your existing cables or purchase new ones. If you own Greenleaf ViewComm Classic 1.1 (ViewComm For Windows), you may upgrade to VCS Async II only, no other VCS products. NOTE: The cable Set For Classic does Not support the automatic cable detection feature in VCS Async II models.

ViewComm Async II