PXI-8423/4 National Instruments RS-485 Interface | Apex Waves | Image PXI-8423/4 National Instruments RS-485 Interface | Apex Waves - Wiring Diagram Image
PXI-8423/4 National Instruments RS-485 Interface | Apex Waves | Image
PXI-8423/4 National Instruments RS-485 Interface | Apex Waves - Wiring Diagram Image
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PXI-8423-4

Modular Systems > National Instruments > Serial Interface Devices

Part Number PXI-8423-4
Manufacturer/Brand National Instruments
Description PXI-8423/4 4-Port RS-485 Interface

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National Instruments PXI-8423/4 RS-485 Interface Module

The National Instruments PXI-8423/4 (Part number: 777737-04) is a 4-port, RS-485 Interface Module. Because each match of differential links is a transmission line, the user should effectively end the line to keep away from reflections. A typical technique for termination of a two-wire RS-485 multipoint arrangement is comprised of introducing ending resistors at each finish of the multipoint configuration. If the user interfaces numerous instruments in a chain, then they require an ending resistor just on the first and last instrument. The ending opposition must match the trademark impedance of the transmission line (commonly 100 to 120 Ω). The user can arrange a discretionary DB-9 RS-485 end connector that contains worked in end resistors for simple end from National Instruments.

A transmission line enters an uncertain state if there are no axes that are transmitting on it. This vague state can make the beneficiaries get invalid information bits from the noise on the link. To keep a line from accepting these information bits, constrain the transmission line to a known state. To do this, introduce two 620 Ω polarization resistors on an axis in the transmission line. The result is a voltage divider that powers the voltage between the differential match to under 200 mV, the limit voltage for the receiver. The user should introduce these resistors just on one axis.

This RS-485 Interface Module has 2000 V disengagement and is compatible with a standard PC serial port, Windows 2000/NT/9x, full Windows 2000/9x Plug and Play similarity for switchless design, and interrupt sharing between ports.

ModelPXI-8423/4
Part Number777737-04
ManufacturerNational Instruments
TypeRS-485 Serial Interface Module
Ports4
Maximum Transfer Rate460.8 kb/s
FIFO Size64 B
Dimensions3.94 x 6.37 in.
I/O Connector10-position modular jack
WarrantyOne Year Warranty
PXI-8423/4 ManualUser Manual and Maintenance Manual Available for Download
PriceContact a sales representative for a quote.

National Instruments PXI-8423/4 Frequently Asked Questions

 

Question: What are the power requirements for the PXI-8423/4 Serial Interface Device?

 

Answer: The power requirements for the PXI-8423/4 Serial Interface Device are 1,000 mA typical current and 1,500 mA maximum current at +5 VDC.

 

Question: What is the continuous rated voltage for the NI PXI-8423/4?

 

Answer: The continuous rated voltage for the NI PXI-8423/4 is -7 V to _12 V for the RS-485 interface.

 

Question: Which software is recommended for use with the PXI-8423/4?

 

Answer: The software recommended for the PXI-8423/4 is LabVIEW, LabWindows/CVI, and Measurement Studio.

 

Question: Does the NI PXI-8423/4 have optical isolation?

 

Answer: Yes, the NI PXI-8423/4 does have optical isolation.

PXI-8423-4 Technical Specifications:


Manufacturer:National Instruments
Model:PXI-8423/4 (777737-04)
Type:RS-485 Interface
Repair Evaluation:$150

Why Buy From Apex Waves

Delivery: UPS, FedEX and DHL – Free UPS Ground on all orders
Overnight, Next Day Air or Expedited shipping options available
International delivery available
Same day shipping for in-stock on location
Warranty: All parts new, new surplus, used or reconditioned are covered by Apex Waves 1 Year Warranty
Returns: No hassle return policy.
Dedicated customer service team.
Payment:
Quick Quotes: Receive Price & Availability Today!
Calibration: Ask About Our Tiered Calibration Levels
Option & Modules: Confirm Your Requirements or Versions
Repair: Cost & Lead Time Available Upon Request for Service
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PXI-8423/4 4-Port RS-485 Interface

Manufacturer:National Instruments
Model:PXI-8423/4 (777737-04)
Type:RS-485 Interface
Repair Evaluation:$150

National Instruments PXI-8423/4 RS-485 Interface Module

The National Instruments PXI-8423/4 (Part number: 777737-04) is a 4-port, RS-485 Interface Module. Because each match of differential links is a transmission line, the user should effectively end the line to keep away from reflections. A typical technique for termination of a two-wire RS-485 multipoint arrangement is comprised of introducing ending resistors at each finish of the multipoint configuration. If the user interfaces numerous instruments in a chain, then they require an ending resistor just on the first and last instrument. The ending opposition must match the trademark impedance of the transmission line (commonly 100 to 120 Ω). The user can arrange a discretionary DB-9 RS-485 end connector that contains worked in end resistors for simple end from National Instruments.

A transmission line enters an uncertain state if there are no axes that are transmitting on it. This vague state can make the beneficiaries get invalid information bits from the noise on the link. To keep a line from accepting these information bits, constrain the transmission line to a known state. To do this, introduce two 620 Ω polarization resistors on an axis in the transmission line. The result is a voltage divider that powers the voltage between the differential match to under 200 mV, the limit voltage for the receiver. The user should introduce these resistors just on one axis.

This RS-485 Interface Module has 2000 V disengagement and is compatible with a standard PC serial port, Windows 2000/NT/9x, full Windows 2000/9x Plug and Play similarity for switchless design, and interrupt sharing between ports.

ModelPXI-8423/4
Part Number777737-04
ManufacturerNational Instruments
TypeRS-485 Serial Interface Module
Ports4
Maximum Transfer Rate460.8 kb/s
FIFO Size64 B
Dimensions3.94 x 6.37 in.
I/O Connector10-position modular jack
WarrantyOne Year Warranty
PXI-8423/4 ManualUser Manual and Maintenance Manual Available for Download
PriceContact a sales representative for a quote.

National Instruments PXI-8423/4 Frequently Asked Questions

 

Question: What are the power requirements for the PXI-8423/4 Serial Interface Device?

 

Answer: The power requirements for the PXI-8423/4 Serial Interface Device are 1,000 mA typical current and 1,500 mA maximum current at +5 VDC.

 

Question: What is the continuous rated voltage for the NI PXI-8423/4?

 

Answer: The continuous rated voltage for the NI PXI-8423/4 is -7 V to _12 V for the RS-485 interface.

 

Question: Which software is recommended for use with the PXI-8423/4?

 

Answer: The software recommended for the PXI-8423/4 is LabVIEW, LabWindows/CVI, and Measurement Studio.

 

Question: Does the NI PXI-8423/4 have optical isolation?

 

Answer: Yes, the NI PXI-8423/4 does have optical isolation.

PXI-8423-4 Technical Specifications:


Manufacturer:National Instruments
Model:PXI-8423/4 (777737-04)
Type:RS-485 Interface
Repair Evaluation:$150

Why Buy From Apex Waves

Delivery: UPS, FedEX and DHL – Free UPS Ground on all orders
Overnight, Next Day Air or Expedited shipping options available
International delivery available
Same day shipping for in-stock on location
Warranty: All parts new, new surplus, used or reconditioned are covered by Apex Waves 1 Year Warranty
Returns: No hassle return policy.
Dedicated customer service team.
Payment: Authorize.Net paypal visa card master card american express card BB&T Bank better business bureau
Quick Quotes: Receive Price & Availability Today!
Calibration: Ask About Our Tiered Calibration Levels
Option & Modules: Confirm Your Requirements or Versions
Repair: Cost & Lead Time Available Upon Request for Service
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