PAR24B SPEC SHEET
Home >
Data Acquisition Selector >
PAR24B
| PAR24B -- click for photo tour |
 |
Not recommended for new designs.
Please use the PAR8CH instead.
PAR24B A/D Features
• Replaced by the
PAR8CH
• Eight 24 bit analog channels
• Sampling rates from DC to 1 kHZ
• Individual A/D converter per channel
• 32K FIFO data buffer
• 8 digital outputs
• Low 120 milliamp current draw
• Connects to PC parallel port
• Application software with source
• Price $950
• Specs Table
• Options Table
Product Description
The PAR24B is an 8 channel, 24 bit realtime continuous data
acquisition system with an individual A/D per channel architecture.
With an individual A/D per channel you get high resolution on each
channel with no channel to channel timing skew or crosstalk.
For the PAR24B 24 bit A/D, highest resolution is in the 10-100
Hz range, with maximum sampling rates of 1 kHz. All PAR24B inputs are
differential with amplitude ranges jumper selectable for +/-2.5 or +/-
10 volts. The on board SRAM FIFO allows heavily interrupted and
multitasking PCs to finish any current processing before retrieving
acquired data, resulting in continuous acquisition with no data loss.
Sitting outside the PC for improved noise performance, the PAR24B
communicates all of its acquired data to the PC using the standard
EPP/BPP parallel port.
A full-featured acquisition kernel and display program is included
with this system so you can be up and running immediately. This
program allows users to control acquisition rates and continuously
save acquired data to disk. In addition, for those wishing to develop
their own custom code and applications, low level functions for
controlling the PAR24B are supplied as 16 and 32 bit DLLs and as
National Instruments LabVIEW drivers. Full source code is included.
Also, the PDF user manual contains circuit diagrams for hardware
specifics.
The PAR24B comes with all the accessories you need to start
acquiring data. These include software, manual (PDF), a 4K FIFO, 9VAC
power supply, 6' parallel port cable, an 8 channel
terminal board, and a desktop enclosure. Separately priced upgrades
to a 32K FIFO or a full size rack mount enclosure are also
available.
For additional information see:
Manual Excerpts,
Software,
PAR8CH
Specifications Table
| PAR24B Specs |
| Channels: |
8 |
|
| Resolution: |
Max: 24 bits, Typical: 23 bits at 10 Hz,
20 at 100 Hz, 15 at 1 kHz |
FAQ note |
| Sample Rate: |
Min: 10 Hz, Max: 1 kHz, Recommended: 10-100 Hz |
|
| Gain: |
1 to 128, program selectable |
|
| Crosstalk: |
Down more than 140 dB (24 bits) at 100 Hz |
FAQ note |
| Analog input type: |
Differential |
FAQ note |
| Common Mode Rejection: |
96 dB with analog input range of +/- 2.5 |
|
| Analog input voltage: |
+/-2.5v or +/-10v, jumper selectable |
FAQ note |
| Analog input impedance: |
Sampling rate dependent, see Harris HI7191 spec sheet |
|
| Analog input header: |
8x2 ribbon cable or plain wire with
TRM8X2 |
|
| Digital I/O: |
8 output bits on header J220 |
FAQ note |
| Digital I/O levels: |
TTL/CMOS 5 volt |
|
| PC Connection: |
EPP/BPP PC parallel port |
FAQ note |
| Power Requirements: |
9 vac or +/-12 vdc, 120ma @+12v, 20ma @-12v |
|
| A/D Converter: |
Harris HI7191,
1 per channel |
|
| A/D Type: |
Sigma Delta |
|
| Data Buffer: |
4K FIFO, 32K optional |
|
| Board Layers: |
4 including separate power and ground planes |
|
| Board Dimension: |
7" x 8" |
|
| Enclosure Dimension: |
1U high, 1/2 width, (8 3/8" W x 2" H x 10 1/2" D) |
|
| Supported OS: |
WinNT 4.0, Win95/98, DOS, Linux, LabVIEW |
|
| Price: |
$950 |
|
Options Table
Some users may want to consider these options, although none are
necessary as the PAR24B will work fine in its standard configuration.
| PAR24B Options |
| Option |
Description |
Price |
| UPGRADE-FIFO-32K |
Upgrade to 32K from the standard 4K |
$40 |
| SUB-TRANS-EURO |
Substitute a 220 vac European wall style transformer
with Continental European type plug and 9 vac, 1 amp output |
$0 |
| UPGRADE-RACK-24B |
Upgrade to a 2U high, full width
rack enclosure |
$100 |
| Third-Party Products |
Links to cost effective
third-party
software and hardware products that enhance the
PAR24B are listed on the third-party page |
|
|