Black Box PQ-8P, PQ-8S manual Operation, Serial Printing, Printer Sharing

Models: PQ-8P PQ-8S

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PQ-8P, PQ-8S

5. Operation

5.1 Serial Printing

By default, the PQ-8S sends data at 96N81 (9,600 baud; parity = none; word length = 8 bits; stop bits = 1). Make sure that the printer and the PQ-8S are using the same serial parameters. The PQ-8S’s Serial-Out parameters can be changed using the second (right) bank of switches located on the front panel.

5.2 Printer Sharing

The PQ-8P and PQ-8S allow the printer to be shared automatically between an attached PC/LAN and an IBM twinax host. Simply connect the PC/LAN printer server to the parallel (PQ-8P) or serial (PQ-8S) port. The PQ-8P can supply external devices attached to its parallel sharing port with 5V up to 350 mA. See Appendix F for information on how to transfer power to pin 18 of the PQ-8P.

The PQ-8 uses a timeout after each print job before it honors print jobs from another port. At the end of a host print job, the PQ-8 waits for the specified Twinax Port Timeout period before it honors data streams coming in through the sharing port. The Twinax Port Timeout period

is set through Host/PC download command 03 or through the setup software.

After a parallel or serial print job is completed, the PQ-8 will again wait for a period of time before it honors

host print jobs. The Sharing Port Timeout is set through Host/PC download command 50 or through the setup software.

By default, the PQ-8S receives PC data at 96N81 (9,600 baud; parity = none; word length = 8 bits; stop bits

=1). Make sure the PC/LAN and the PQ-8S are using the same serial parameters. In addition, the PQ-8’s Serial-In settings should be compatible with its Serial-Out settings. When printing from the PC/LAN, the lowest baud rate (Serial-In/Serial-Out) will determine the print speed. The PQ-8’s Serial-In parameters can be changed through Host/PC download commands 76 through 79, or through the setup software.

If the PC print job is sent while a host job is printing, the printer responds as “busy” to the PC print request. The print job can be spooled through a spool program, sent to the printer when the host job is finished, or if the PC’s printer port is set for infinite retry through the DOS “Configure Printer” command (described in the DOS manual), the print job waits for the printer to be available to receive the data.

The output protocol specified in the PQ-8’s configuration (through configuration-switch settings) is irrelevant for printing from the shared port. For PC/LAN printing, select the appropriate printer driver on the PC/LAN printer server.

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Black Box PQ-8P, PQ-8S manual Operation, Serial Printing, Printer Sharing

PQ-8P, PQ-8S specifications

The Black Box PQ-8S and PQ-8P are advanced power quality analyzers designed for professionals seeking to monitor, analyze, and improve the electrical efficiency of their systems. These devices stand out in the market due to their robust features, sophisticated technology, and user-friendly interface, making them essential tools for electrical engineers and facility managers.

One of the standout features of the PQ-8S and PQ-8P is their ability to conduct precise power quality monitoring. Both models are equipped with high-resolution sampling rates, allowing for accurate capture of transient events and fluctuations in power quality. This capability is crucial for diagnosing issues such as voltage sags, swells, interruptions, and harmonics, which can lead to equipment malfunction or failure if left unchecked.

The PQ-8S is tailored for three-phase systems, making it ideal for industrial applications that require comprehensive analysis of three-phase power flows. Meanwhile, the PQ-8P, designed for single-phase applications, is particularly useful in residential or light commercial settings. Each model features an intuitive touchscreen interface, enabling users to navigate through data and settings effortlessly.

Data logging and extensive reporting are central to both models. They can store multiple parameters, such as voltage, current, and frequency, for prolonged periods, which assists in trend analysis and long-term monitoring. The onboard memory capacity allows users to access historical data for thorough evaluations and audits without requiring constant device connection.

In addition to their analytical prowess, the PQ-8S and PQ-8P emphasize safety and compliance. Both devices are designed with safety features that adhere to international standards, ensuring reliable performance in various environments. Their rugged design makes them suitable for both fieldwork and permanent installations, as they can withstand harsh conditions.

Wireless connectivity options enhance their usability, allowing for remote monitoring and real-time analysis from any location. This feature ensures that issues can be addressed promptly, leading to improved operational efficiency and reduced downtime.

In conclusion, the Black Box PQ-8S and PQ-8P power quality analyzers offer an impressive combination of features, advanced technologies, and practical characteristics. Their design and functionality make them indispensable tools for anyone looking to maintain optimal power quality in their electrical systems, thus ensuring reliability and efficiency in an increasingly electrified world.