Ecotech A Series User Manual

CHAPTER 4, DIGITAL COMMUNICATION
98307600 Rev. C-1 4-13
 A bad block check on a Bavarian command will cause the response <NAK>BAD
BLOCK CHECK<CR><LF>.
 If a Bavarian command is sent without a set of matching <STX> and <ETX>
characters it will cause the response <NAK>BAD STX ETX PAIR<CR><LF>.
4.4.3.12 Enhanced Protocol Idiosyncrasies
 The string DA<CR> is a valid command.
 The DA command will function without an I.D.
 The data type must be sent on 9800 style commands but it is not checked
against the actual parameters.
 The number of data parameters must be sent on 9800 style commands, but it is
not checked against the actual parameters.
4.4.4 Establishing Communications
The first step in establishing communications with the EC9830 is to connect a
computer or terminal to one of the instrument's RS232 serial ports as specified in
section 4.2.1. The default serial configuration for either serial port is 2400,8,N,1
(2400 baud, 8 bits, no parity, and one stop bit). If you need to change the serial
configuration from the default, use the INTERFACE MENU.
Once the instrument has been connected, place the instrument in Command mode
by entering the INTERFACE MENU via the front panel and selecting COMMAND as the
INTERFACE MODE. Then, using a communication package such as HYPER
TERMINAL establish communications with the instrument.
To test the communication connection type DCOMM,??? and press the Enter key.
The complete alphanumeric set recognized by the EC9830 should be displayed on
the computer followed by END OF MULTI-DROP PORT TEST
4.4.4.1 Multidrop Communications
The term multidrop is an idiomatic contraction of the term multiple drops. It is a
term used to denote a parallel connection of multiple RS232 transceivers. In this
scheme, all receivers share the same receive line that comes from a single master.
Likewise, these multiple transceivers share the same transmit line which goes
back to a single master. This strategy is a method of attaching multiple slave units
(instruments) to a single master (computer).
In the multidrop strategy, each unit is given an identification number (I.D.) which
is sent with each command from the master. When a unit recognizes its unique

Ecotech A Series Specifications

General

Brand	Ecotech
Model	A Series
Category	Measuring Instruments
Language	English

Summary

Manual History

Revision History

Details the revisions made to the manual, including dates and summaries of changes.

Notice

Mark Declaration and Conformity

Scope of Declaration

Defines the analyzer models covered by the declaration and lists compliance standards.

Internationally Recognized Symbols

Safety Requirements and Equipment Details

Equipment Rating

Specifies the electrical rating and environmental conditions for the analyzer.

Environmental Conditions

Details the acceptable relative humidity, temperature, and altitude for operation.

Factory Service and Support

Factory Service

Procedure for obtaining factory repair services and required information.

Service and Spare Parts

Contact information and services for customer support and spare parts.

Claims and Discrepancies

Claims for Damaged Shipments

Steps for reporting and claiming for damaged equipment upon receipt.

Shipping Discrepancies

Procedure for reporting shortages or discrepancies against the packing list.

Warning

1.0 Description of EC9830 Analyzer

1.1 Specifications

Detailed technical specifications including range, noise, drift, and performance metrics.

1.2 U.S. EPA Reference Method

Information on the EC9830's designation as a U.S. EPA reference method.

2.0 Installation and Operation

2.1 Mechanical Installation

Instructions for physical installation, including location and connections.

2.2 AC Power Connection

Steps for connecting the analyzer to AC power and display adjustments.

2.3 Operation

General procedures for operating the analyzer using the front panel controls.

2.4 Analyzer Calibration

Procedures for calibrating the analyzer to ensure accuracy.

2.5 Menus and Screens

Overview of the analyzer's menu structure and screen displays.

2.6 Analog Output

Configuration and connection of analog outputs for data recording.

2.7 Password Protection

How to enable and use password protection for configuration settings.

3.0 Calibration Procedures

3.1 Overview and Instructions

Introduction to calibration concepts and basic instructions.

3.2 Multipoint Calibration Procedures

Detailed methods for multipoint calibration using gas.

3.4 Automatic Zero/Span Checks (AZS)

Explanation and setup of automatic zero/span checks for calibration maintenance.

4.0 Digital Communication

4.1 Discrete Control

Using discrete I/O signals for analyzer control.

4.2 Serial Control

Using RS232 serial ports for communication.

4.4 Serial Command Control

Commands for controlling the analyzer via serial interface.

4.5 USB Communication

Connecting and communicating via USB.

4.6 EC9800 Communicator Software

Software for downloading data and remote control.