Capturing Images

The aiming beam is smaller when the terminal is held closer to the code and larger when it is farther from the code. Symbologies with smaller bars or elements (mil size) should be read closer to the unit. Symbologies with larger bars or elements (mil size) should be read farther from the unit.

The image-capture process is an intuitive, split-second operation for experienced users. By following the basic guidelines, new users can easily develop their own technique and, with practice, quickly learn to adapt it to different circumstances. Basic steps for acquiring images using the Dolphin 7400/7450 terminal include:

1.To aim, point the display end of the 7400 horizontally at a 45° angle approximately 2 to 9 inches (5 to 20 cm) away from the target. You may have to adjust the angle at which you hold the Dolphin if there is glare on the screen.

2.Press the ON/SCAN button to take an image. Use the live video image on the terminal screen as a guide for positioning and aiming the terminal at the target. You may find it helpful to start by moving the terminal further away and then in closer to the target. The active screen image will have a slightly degraded appearance compared to the captured image. This is normal.

3.Release the ON/SCAN button to capture the image when the desired image is displayed on the terminal screen. Hold the Dolphin terminal as still as possible when capturing the image.

Basic steps for acquiring images using the Dolphin 7450 terminal are:

1.Point the display end of the 7450 directly at the target.

2.Pull the Scan Trigger to take the image. Use the live video image on the terminal screen as a guide for positioning and aiming the terminal at the target. You may find it helpful to start by moving the terminal further away and then in closer to the target. The active screen image will have a slightly degraded appearance compared to the captured image. This is normal.

3.Release the Scan Trigger to capture the image when the desired image is displayed on the terminal screenn. Hold the Dolphin terminal as still as possible when capturing the image.

The image quality and related file size are determined by the data compression method used by your software application. For highest quality, take grayscale images. When saved, the image will be saved in JPEG file format. The size of the file depends on the information content of the image and will be approximately 4-8 K.

Communication

Communication Media

Via the RS-232 Port

The industry-standard RS-232 port supplies 5 volts of power and allows the user to connect external devices such as scanners and printers, to the Dolphin 7400 and 7450 terminals.

Via the IrDA Port

The IrDA port allows the Dolphin 7400/7450 to send data via pulses of light to and from other IrDA-compliant devices, such as printers and PCs.

Via the Radio

The Dolphin 7400/7450 RF may be equipped with a 2.4 GHz 802.11b-compliant direct sequence or frequency hopping

spread spectrum local area network (LAN) radio.

Via the Modem

The Dolphin 7400 may be equipped with a low power, high speed, V.90 56K FAX/modem to allow communications via an analog phone line.

CAUTION: Only connect the modem to an analog phone line. Connecting to a digital PBX phone line could result in damage to the modem.

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