Interfacing Of A D Converter

[Miqueo Snyder]

Im currently working on a project that involves interfacing a PT2163P thermal printer with an Arduino Uno via an RS232 to TTL converter. However, I've encountered some issues and need assistance in resolving them.

The Problem: I have been unable to achieve successful communication and printing from the thermal printer using the Arduino. Despite my efforts, the printer does not respond as expected.

You'll get far more support here, and converge on a solution more quickly, if you try to provide us with the best information possible. Not being rough, just pointing out that no one here has "a crystal ball", all we can help you with is what we see.

The connector pinout is a good start, but is there a text description of the purpose of each pin? That might help with @JohnLincoln 's question. I'm wondering if there's a problem with the two handshaking signals. They wouldn't include them if they didn't give them a purpose.

This rugged device reliably solves a host of communication problems. It converts two- or four-wire RS485 to RS232 (and back again), and an optional module converts either of these formats into fiber optic, bidirectionally. The Unicom 2500 communication interface converter communicates at a rate of up to 115 kilo baud and it even increases the throughput of two-wire RS485 mode. Its opto-isolation protects your valuable equipment and buses from destructive spikes and surges of up to 2500 volts. The Unicom 2500 also has a DTE/DCE switch that eliminates the need for a null-modem.

With 2 Universes of Ethernet to DMX conversion featuring Art-RDM support, Power over Ethernet (PoE) or a flexible 12-24v DC input, the ODE MK3 allows for fast deployment of DMX systems compatible with a wide range of devices.

The ODE MK3 is a robust, reliable, installation-grade, Ethernet to DMX converter engineered to connect DMX fixtures to your Ethernet network infrastructure. Now you can expand your lighting project to the next level.

With two Universes of bi-directional eDMX to DMX conversion and Art-RDM support, the ODE MK3 is compatible with a wide range of devices and allows for fast deployment of your DMX system. Simply connect, configure and take control!

Additionally, this Ethernet to DMX/RDM gateway is packed with installer-friendly features for a speedy installation and configuration, all managed through a web UI - and contained in a compact, portable form factor.

Configuration is managed through the localhost web interface to simplify commissioning and updates. Consequently, the ODE MK3 to be configured from any computer on your network.Flexible power optionsPower the ODE MK3 using IEEE 802.3af PoE (Power over Ethernet) or DC 12-24v input.Sync modeAll ENTTEC Ethernet hardware accepts ArtSync to fully synchronise Art-Net data across your installation when receiving Art-Net from the same source to protect against content tearing and ensure a professional looking output across your rig.Time-saving and installer-friendlyThis Ethernet to DMX converter is packed with installer-friendly features including industry standard 5-pin XLR ports to simplify wiring.

Unlock a world of potential by integrating the ODE Mk3 Ethernet to DMX interface. Simply pair it with a number of well-known automation systems using generic Art-Net or sACN (E1.31) drivers to allow you to send and receive DMX and RDM.

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First choice:

I am assuming digiface USB can route all ins/outs from ADI8MKIII trough Totalmix and everything controlled by arc USB Regarding headphones connection would be one connected to TRS OUTS of the converter for the player and DIGIFACE USB headphones out for monitoring whats being recorded.

On top of this you can store all settings digitally in TotalMix and can make use of Autoset.

Also .. if you get the UFX II and need to expand i.e. with an Octamic XTC, then you can configure

the XTC as so called AUX device which means

- you can remote control the XTC in this TM instance

- the XTCs additional channels are part of the routing matrix in terms of any to any routing

- you can save also the settings of the XTC digitally in snapshots

Shall you take the UFX+, then you can do this even via MADI and by adding up to 8 additional XTCs as AUX device with automatic latency corrections. Enables for fiber optic cables (multimode) up to 2km between each devices which will be chained one after the other to build up a ring.

Interfacing field programmable gate arrays (FPGAs) to an analog-to-digital converter (ADC) output is a common engineering challenge. This article includes an overview of various interface protocols and standards as well as application tips and techniques for utilizing low voltage differential signaling (LVDS) in high speed data converter implementations.

Interfacing FPGAs to ADC digital data outputs is a common engineering challenge. The task is complicated by the fact that ADCs use a variety of digital data styles and standards. Single data rate (SDR) CMOS is very common for lower speed data interfaces, typically under 200 MHz. In this case, data is transitioned on one edge of the clock by the transmitter and received by the receiver on the other clock edge. This ensures the data has plenty of time to settle before being sampled by the receiver. In double data rate (DDR)CMOS, the transmitter transitions data on every clock edge. This allows for twice as much data to be transferred in the same amount of time as SDR; however, the timing for proper sampling by the receiver is more complicated.

Parallel LVDS is a common standard for high speed data converters. It uses differential signaling with a P-wire and an N-wire for each bit to achieve speeds up to 1.6 Gbps with DDR or 800 MHz in the latest FPGAs. Parallel LVDS consumes less power than CMOS, but requires twice the number of wires, which can make routing difficult. Though not part of the LVDS standard, LVDS is commonly used in data converters with a source synchronous clocking system. In this setup, a clock that is in-phase with the data is transmitted alongside the data. The receiver can then use this clock to capture the data easier since it now knows the data transitions.

FPGA logic is often not fast enough to keep up with the bus speed of high speed converters, so most FPGAs have serializer/deserializer (SERDES) blocks to convert a fast, narrow serial interface on the converter side to a wide, slow parallel interface on the FPGA side. For each data bit in the bus, this block outputs 2, 4, or 8 bits, but at one-half, one-quarter, or one-eighth of the clock rate, effectively deserializing the data. The data is processed by wide buses inside the FPGA that run at much slower speeds than the narrow bus going to the converter.

The LVDS signaling standard is also used in serial links, mostly on high speed ADCs. Serial LVDS is typically used when pin count is more important than interface speed. Two clocks, the data rate clock and the frame clock, are often used. All the considerations mentioned in the parallel LVDS section also apply to serial LVDS. Parallel LVDS simply consists of multiple serial LVDS lines.

I2C uses two wires: clock and data. It supports a large number of devices on the bus without additional pins. I2C is a relatively slow protocol, operating in the 400 kHz to 1 MHz range. It is commonly used on slow devices where part size is a concern. I2C is also often used as a control interface or data interface.

Serial PORT (SPORT), a CMOS-based bidirectional interface, uses one or two data pins per direction. Its adjustable word length provides better efficiency for non-8% resolutions. SPORT offers time domain multiplexing (TDM) support and is commonly used on audio/media converters and high channel count converters. It offers performance of about 100 MHz per pin. SPORT is supported on Blackfin processors and offers straightforward implementation on FPGAs. SPORT is generally used for data only, although control characters can be inserted.

JESD204 is a JEDEC standard for high speed serial links between a single host, such as an FPGA or ASIC, and one or more data converters. The latest spec provides up to 3.125 Gbps per lane or differential pair. Future revisions may specify 6.25 Gbps and above. The lanes use 8B/10B encoding, reducing effective bandwidth of the lane to 80% of the theoretical value. The clock is embedded in the data stream, so there are no extra clock signals. Multiple lanes can be bonded together to increase throughput while the data link layer protocol ensures data integrity. JESD204 requires significantly more resources in the FPGA/ASIC for data framing than simple LVDS or CMOS. It dramatically reduces wiring requirements at the cost of a more expensive FPGA and more sophisticated PCB routing.

With single-ended CMOS digital signals, logic levels move at about 1 V/ns, typical output loading is 10 pF maximum, and typical charging currents are 10 mA/bit. Charging current should be minimized by using the smallest capacitive load possible. This can usually be accomplished by driving only one gate with the shortest trace possible, preferably without any vias. Charging current can also be minimized by using a damping resistor in digital outputs and inputs.

The time constant of the damping resistor and the capacitive load should be approximately 10% of the period of the sample rate. If the clock rate is 100 MHz and the loading is 10 pF, then the time constant should be 10% of 10 ns or 1 ns. In this case, R should be 100 Ω. For optimal signal-to-noise ratio (SNR) performance, a 1.8 V DRVDD is preferred over 3.3 V DRVDD. However, SNR is degraded when driving large capacitive loads. CMOS outputs are usable up to about 200 MHz sampling clocks. If driving two output loads or trace length is longer than 1 or 2 inches, a buffer is recommended.

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