B&B Electronics Parallel Printer Card PIOC Instrukcja Użytkownika Pobierz pdf (Strona 39)

What does the data look like as it comes out of a T35-GFX? Here’s a sample:

8.157, 5.743, 0

8.190, 6.051, 1

8.212, 6.036, 2

8.238, 6.002, 3

8.256, 6.007, 4

8.271, 6.012, 5

8.289, 6.012, 6

8.304, 6.012, 7

8.315, 6.017, 8

8.326, 6.017, 9

8.340, 6.021, 10

………………..

The format for the data is often referred to as .csv or, comma separated value format.

Helper programs from Microsoft® and others know how to read these types of files, and

separate lines into individual values.

Each line contains three values, the first is the pack voltage, the second is the pack

current, and the third is the seconds since the start of the operation. This sample happens

to be from a charge operation. It is only a part of the entire file generated, as there is a

line for every second.

Interfacing an ASCII printer

As noted above, the T35-GFX can produce an ASCII discharge graph. This output is

meant to be sent directly to a printer and makes use of standard ASCII codes to generate

characters for the graph. When this feature was first introduced, almost all printers widely

available to the average consumer were of the ASCII-compatible, dot matrix type. Some

time after that, the laser printer was introduced, and then the ink jet printer. As the

Windows family operating systems became more and more popular, as technology

advanced, and as competition forced prices down, ASCII-compatible printers have

become more and more scarce. Form-based printers such as laser and ink-jet types have

become the norm, and dot matrix printers have faded into the background.

As a result, use of this feature has become less widespread. However, if you still want to

interface a printer directly to the T35-GFX, it can be done.

First, you will need to be sure that your printer is compatible with ASCII (American

Standard Code for Information Interchange) data.

The second hurdle to overcome is that you will most likely have to convert data coming

out of the T35-GFX in serial format to standard parallel data format compatible with

IEEE-1284 Centronics-compatible printer ports. To do this, you will need a serial to

parallel adapter. This is not simply a chunk of plastic with the right connectors on each

end; this is an electronic device that converts data from one format to the other

electronically.

Below is a picture of the gear typically required to interface the T35-GFX to a printer,

along with a point by point description of how to go about it.

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B&B Electronics Parallel Printer Card PIOC Instrukcja Użytkownika Strona 39