 |
|
| |
| |
| |
| |
|
The 2108 was designed to provide a test tool that
can be easily programmed to emulate a wide range of serial buses in automated
test applications. A second goal was to provide the design engineer with an
interactive tool for development of a new serial bus, or modification of a
standard serial bus. These goals were accomplished in the Model 2108.
The 2108 is preprogrammed with standard encoding and formatting schemes which allow the user to quickly emulate the most common serial buses. For modified or custom interfaces, programming is accomplished through an interactive software development package which can be mastered in minutes. For those with extremely complex tasks, the 2108 provides programming to the "bit" level using "micro code".
Each transmit/receive module is coupled to the front panel via a UUT interconnect module. The interconnect modules are software selectable to support multiple signal types. Custom interconnect modules can be quickly and easily developed to meet user’s requirements.
The Model 2108 is a register based VXI module which provides for the fastest possible communication between the unit and the VXI controller. This allows data to be transferred in a continuous mode if required.
The Model 2108 baseboard houses 1-4 serial channels and associated UUT I/O interconnect modules. Each channel may be a transmitter or receiver and is addressed as an independent instrument. Adjacent transmitters and receivers may be operated as a bi-directional bus.
2108 Project Development Software
The Model 2108 is shipped with VXIPlug&Play Win95,98 & NT compatible drivers. Included with the Model 2108 is an additional software package titled the 2108 Project Development Software. This graphical software provides the user a means to program set-up instructions, download and upload data and interactively execute test routines. The test files generated may be saved for downloading and executing by the Plug&Play drivers using any standard Windows based test program. In addition, the software is excellent as a design tool for simulating new designs of custom or modified buses in the development lab.
The 2108TX Transmitter features data rates from 5Kbps to 200Mbps using internal or external clocks. It has software selectable data formats for the most used NRZ, Biphase or AMI formats. In addition users may program the 2108TX to inject errors, parity, or PRBS data. The two 4 Mbit memories may be used in a ping-pong operation to continually output data while reloading new data from the VXI controller.
Transmitter Interconnect Modules
The Transmitter Interconnect Modules provide the user with drivers to meet the electrical requirements of the UUT. Variable voltage drivers may be programmed to meet a wide range of signal levels from ECL to +/- 15V in 20mV increments. In addition, drivers may be programmed as bi-polar, differential or trinary. Custom modules are available to meet user’s requirements if off-the-shelf modules do not meet user’s requirements.
The 2108RX Receiver records data at rates from 5Kbps to 200Mbps using internal or external clocks. It features clock recovery logic to sync to external clocks or data. Data capture or transmission may be initiated using 16 levels of 32bit trigger patterns. The trigger compare logic provides for operations such as command/response or pre & post data capture based on the received data. The VXI controller may continually offload recorded data using the two 4Mbit memories in a ping-pong operation.
The Receiver Interconnect Modules provide for the physical connection to the UUT. The voltage detection range may be set as high as –15V to +15V with standard modules. Signal types may be programmed as bi-polar or differential. Software selectable impedance is provided. Data rates to 200Mbps are supported. Custom modules will be provided in those cases where standard modules do not meet user’s requirements.
2108 (VXI Base Board)
|
VXI single slot, C-size |
|
1 to 4 channels per card, transmit (output) or receive (input) |
2108Tx (Transmit Module)
|
Bit Rate:
| ||||||||||
|
Memory Depth:
| ||||||||||
|
Internal Clock:
| ||||||||||
|
External Clock: 5 KHz to 200 MHz | ||||||||||
|
Programmable Sync | ||||||||||
|
Error Insertion | ||||||||||
|
Delay Adjustment:
| ||||||||||
|
Auxiliary Signals:
|
2108Rx (Receive Module)
|
Bit Rate:
| ||||||||||
|
Memory Depth:
| ||||||||||
|
Internal Clock:
| ||||||||||
|
External Clock: 5 KHz to 200 MHz |
|
Delay Adjustment:
| ||||||||||||||
|
Auxiliary Signals
| ||||||||||||||
|
Input Triggering:
| ||||||||||||||
|
Clock Recovery from 5 KHz to 200 MHz |
TX01, High Voltage Output Module
|
TxData Output Modes
| ||||||
|
High Level Voltage: -15V to +15V | ||||||
|
Low Level Voltage: +15V to -15V | ||||||
|
Source/Sink Current: 50mA | ||||||
|
Voltage Swing: 30V max | ||||||
|
Output Impedance: Selectable 15 or 50 ohm | ||||||
|
Slew Rate: Programmable from 0.15V/ns to 1V/ns | ||||||
|
Threshold resolution: 20mV | ||||||
|
Threshold accuracy: 50mV | ||||||
|
Data rate: 100 Mbps max | ||||||
|
External Clock 1: +/- 15V Bipolar/Differential (5KHz to 50MHz) | ||||||
|
External Clock 2: ECL (5KHz to 200MHz) |
TX02, High Speed Output Module
|
TxData Output Modes
| ||||||
|
High Level Voltage: -1V to +8V | ||||||
|
Low Level Voltage: -3V to +6V | ||||||
|
Source/Sink Current: 50mA | ||||||
|
Voltage Swing: 9V max | ||||||
|
Output Impedance: 50 ohm | ||||||
|
Slew Rate: >1.5V/ns | ||||||
|
Threshold resolution: 20mV | ||||||
|
Threshold accuracy: 50mV | ||||||
|
Data rate: 200 Mbps max | ||||||
|
External Clock 1: +/- 10V Bipolar/Differential (5KHz to 100MHz) | ||||||
|
External Clock 2: ECL (5KHz to 200MHz) |
RX01, High Voltage Input Module
|
Bipolar or Differential Inputs | ||||||
|
Voltage Detection Range:
| ||||||
|
Input Impedance: Selectable 100K or 100 ohm | ||||||
|
Data Rate: 100 Mbps max |
RX02, High Speed Input Module
|
Bipolar or Differential Inputs | ||||||
|
Voltage Detection Range:
| ||||||
|
Input Impedance: Selectable 100K or 100 ohm | ||||||
|
Data Rate: 200 Mbps max |
Specifications are subject to change without notice.
