VXI Technology 6068

The VXI Technology VM6068 is a single-wide, C-size VXIbus module delivering four independent serial communication channels for demanding test and measurement systems. This message-based instrument supports UART, HDLC, and SDLC protocols across seven programmable interface standards—RS-232, RS-422, RS-423, RS-449, RS-485, V.35, and EIA-530—enabling flexible connectivity in heterogeneous test environments. With per-channel data rates reaching 5 Mbaud and up to 4 MB of on-board buffer memory, the VM6068 provides high-throughput serial data acquisition and processing in a compact form factor.

– Technical Specifications

Channels & Protocols
• 4 independent serial channels per module
• Supported protocols: UART, HDLC/SDLC
• Programmable interface standards: RS-232, RS-422, RS-423, RS-449, RS-485, V.35, EIA-530

Data Rates
• Maximum single-channel serial rate: 5 Mbaud
• UART: 5 Mb/s (single channel); 625 kb/s (all 4 channels synchronous); 400 kb/s (real-time VXIbus, 10-bit stream)
• HDLC: Channel 1 at 5 Mb/s, Channel 2 at 4 Mb/s, Channel 3 at 2.6 Mb/s, Channel 4 at 2.05 Mb/s; continuous frame transfer over VXIbus at 323,176 bits/s (400-byte frames)

Memory & Buffering
• On-board buffer: up to 4 MB (1 MB per channel)
• Register-based data access for high throughput

Electrical Characteristics
• RS-485 differential output: ±1.5 V min., ±5.0 V max. (54 Ω load); transition time 120 ns max
• RS-449/RS-422/V.35 differential output: ±0.44 V min., ±0.66 V max. (100 Ω load); transition time 40 ns max
• RS-232 output: +3.6 V to +6.0 V (high), -6.0 V to -3.6 V (low); short-circuit current ±150 mA max; transition time 40 ns max

VXIbus & Drivers
• Message-based slave word serial protocol with direct register access
• A16 memory addressing
• SCPI-compatible command set
• VXIplug&play drivers included
• Standard 68-pin SCSI-compatible IDC connector

– Key Features

• Supports seven serial interface standards from one module
• Independent channel operation with configurable protocols
• High per-channel throughput up to 5 Mbaud
• Scalable buffer memory for sustained data capture
• SCPI control and VXIplug&play integration for rapid test system deployment

– Typical Applications

• Multi-protocol serial interface testing and emulation
• High-speed data acquisition across isolated channels
• Telecom and datacomm protocol validation
• Serial port monitoring and logging in VXIbus test systems

– Compatibility & Integration

The VM6068 integrates into VMIP™ family VXIbus systems as a single-wide C-size module, combining with other VMIP™ members in shared chassis. SCPI command compatibility and VXIplug&play drivers streamline controller integration.