Teledyne API Model 200AU NOX Analyzer Instruction Manual, 02293, Rev. F

9.3.2 RS-232 Communications

The M200AU uses the RS-232 communications protocol to allow the instrument to be connected to a variety of computer based equipment. RS-232 has been used for many years and is well documented. Generally, every manufacturer observes the signal and timing requirements of the protocol very carefully. Problems arise when trying to specify connectors, and wiring diagrams that attach the analyzer to various devices.

9.3.2.1 RS-232 Connection

If the RS-232 port is not working, check the following:

Physical Wiring

First is to get the physical wiring hooked up correctly. Refer to Figure 9-3 for the wiring diagram of the DB-9 plug on the M200AU rear panel. There are 2 features that make connecting the wiring easier. First is the red/green LED’s on the rear panel. The M200AU provides the power to run the red LED, the external equipment will provide the power for the green LED. If the wiring is hooked up correctly both LED’s will be illuminated. Secondly, there is a DTE-DCE switch, this switch interchanges pin 2 & 3 on the DB-9 connector. Set the DTE-DCE switch so that both LED’s are illuminated.

RS-232 Protocol (BAUD rate, Data bits, Parity)

Second is to get the communication protocol for each instrument to match. In Figure 9-3 the default RS-232 parameters are listed. The BAUD rate can be changed in the software menus under SETUP-MORE-COMM-BAUD.

Data Communications Software for a PC.

You will need to have a software package to enable the computer to transmit and receive on its serial port. There are many such programs, we use PROCOMM at Teledyne API. Once you set up the variables in PROCOMM and your wiring connections are correct, you will be able to communicate with the analyzer.

If connecting to a modem, check the following:

Modems are especially difficult because they may have pins that need to be at certain EIA RS- 232 levels before the modem will transmit data. The most common requirement is the Ready to Send (RTS) signal must be at logic high (+5V to +15V) before the modem will transmit. The Teledyne API analyzer sets pin 8 (RTS) to 10 volts to enable modem transmission.

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Teledyne 200AU 2 RS-232 Communications, 2.1 RS-232 Connection, Physical Wiring, Data Communications Software for a PC
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200AU specifications

The Teledyne 200AU is a cutting-edge analytical instrument designed primarily for trace and ultra-trace analysis of elements in various liquid samples. Renowned for its reliability and precision, this inductively coupled plasma mass spectrometer (ICP-MS) is widely utilized in environmental monitoring, food safety, clinical diagnostics, and geochemical research.

One of the distinguishing features of the Teledyne 200AU is its exceptional sensitivity, allowing for the detection of elements at concentrations as low as parts per trillion (ppt). This sensitivity is crucial for applications where even minute traces of contaminants can have significant implications. The instrument also boasts a wide dynamic range, accommodating high-concentration samples without compromising accuracy.

The Teledyne 200AU incorporates advanced technologies that enhance its analytical capabilities. At the core of its design is a robust ICP source, which ensures optimal ionization efficiency. The instrument also features a high-resolution quadrupole mass analyzer, which enables precise separation and identification of ions based on their mass-to-charge ratio. This feature is essential for distinguishing between isotopes and analyzing complex mixtures.

Another notable characteristic of the Teledyne 200AU is its user-friendly interface, which simplifies the operation and data management processes. The software is intuitive, offering sophisticated data processing algorithms that streamline analysis. Users can easily access real-time data visualization, facilitating timely decision-making based on analytical results.

The instrument is built with durability in mind, featuring a compact design that allows for easy integration into various laboratory environments. The Teledyne 200AU is also equipped with state-of-the-art safety features, including enhanced cooling systems and automated shutdown protocols to protect both the instrument and the user.

Moreover, the Teledyne 200AU supports a variety of sample introduction methods, including nebulization and laser ablation, providing flexibility to accommodate different types of samples and experimental needs. Its multi-element capability further enhances its versatility, allowing simultaneous detection of multiple elements in a single analysis.

In summary, the Teledyne 200AU stands out as a premier instrument in the field of mass spectrometry. Its combination of high sensitivity, advanced technology, user-friendly features, and robust design makes it an invaluable tool for scientists and researchers seeking precise elemental analysis across various disciplines.
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