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Request To Send (RTS) is a control signal from the
Data Set Ready (DSR) is a control signal from the host computer to the printer. When DSR is in the ACTIVE condition (positive voltage), the printer can transmit status to the host. When RTS is in the INACTIVE condition (negative voltage), the printer does not transmit any data.
When DTR/DSR handshaking is selected via DIP Switch #7 at the rear of the printer, the Data Terminal Ready (DTR) control signal output from the printer controls when the host computer may send data. DTR ACTIVE (positive voltage), permits the host to send data. When the printer places DTR in the INACTIVE (negative voltage) state, the host must not send data.
Note: When XON/XOFF handshaking is selected, data flow is controlled by the ASCII Control Codes DC1 (XON) and DC3 (XOFF). The DTR control lead does not have an effect.
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The required cable must have a
The other end of the signal interface cable connects to an appropriate point at the host computer. This cable is one of two types depending on the specific interface requirements. Refer to page 48 for information on the standard and null modem cables.
Data cables must be fully shielded and fitted with metal or metallized connector shells. Shielded cables and connectors are required to prevent radiation and reception of electrical noise.
To minimize electrical noise pickup in the cable:
•Keep data cables as short as possible.
•Do not bundle the data cables tightly with power cords.
•Do not tie data cables to power wire conduits.
Zebra | 47 |
