Paradise RA 5785 manual Trailer Packet, Frame Check, Timing issues

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8.1.3 Trailer Packet

The trailer component contains only one byte called the Frame Check Sequence. This field provides a checksum during packet transmission. See Figure 8-5.

HEADER

DATA

TRAILER

(4 bytes)

(6-32 bytes)

(1 byte)

 

 

 

Frame Check

Checksum (1 byte)

Figure 8-5: Trailer Sub-Packet

8.1.3.1 Frame Check

This value is computed as a function of the content of the destination address, source ad- dress and all Command Data Substructure bytes. In general, the sender formats a message frame, calculates the check sequence, appends it to the frame, then transmits the packet. Upon receipt, the destination node recalculates the check sequence and compares it to the check sequence embedded in the frame. If the check sequences are the same, the data was transmitted without error. Otherwise an error has occurred and some form of recovery should take place. In this case the amplifier will return a packet with the “Bad Checksum” error code set. Checksums are generated by summing the value of each byte in the packet while ignor- ing any carry bits.

A simple algorithm is given as:

Chksum=0

FOR byte_index=0 TO byte_index=packet_len-1

Chksum=(chksum+BYTE[byte_index]) MOD 256

NEXT byte_index

8.1.4 Timing issues

There is no maximum specification on the inter-character spacing in messages. Bytes in mes- sages to amplifier units may be spaced as far apart as you wish. The amplifier will respond as soon as it has collected enough bytes to determine the message. Generally, there will be no spacing between characters in replies generated by units. The maximum length of the packet sent to the amplifier node should not exceed 64 bytes, including checksum and frame sync bytes. Inter-message spacing, must be provided for good data transmission. The minimum spacing should be 100 ms. This time is required for the controller to detect a “Line Cleared” condition with half duplex communications. Maximum controller respond time is 200 ms.

Operations Manual, HPA3, Mini Compact Outdoor SSPA

208143 REV -

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Contents Mini Compact Outdoor Page Table of Contents Performance Tests Band OperationRemote Control Interface Maintenance and TroubleshootingRedundant System Operation Appendix a DocumentationFigures Tables This page Intentionally Left Blank General Information SpecificationsIntroduction DescriptionInspection Safety ConsiderationsEquipment Supplied High Voltage HazardsPage This page Intentionally Left Blank Dimensions and Weight InstallationUnit weights typical Model Number Weight Units Connector Pin-OutsRF In J1 Type N F RF Out J2Monitor & Control Port J4 MS3112E18-32S Alarms on J4RF Output Sample Port J3 Type N F J4 Monitor & Control Port Pin-Outs Pin # Signal Type FunctionJ6 Switch Port Pin-Outs Pin # Connection Switch Port J6 MS3112E10-6SSerial I/O Control J4 Link Port J5 MS3112E10-6SJ8 Auxiliary Power Port Pin-Outs Pin # Connection Auxiliary Power Port J8 MS3112E10-6SAC In J7 MS3102R16-10P J7 AC In Port Pin-Outs Pin # ConnectionSummary Alarm Indicator Physical FeaturesChassis Ground Pin Removable Fan TraySafety Considerations InstallationUniversal CO Mounting Kit Parts List Item # Qty Description InspectionAttach Mounting Supports to Unit Mount Unit to Antenna Boom Remote Communications Connections Quick Start and OperationJ4 Connections for RS-485 Communications Quick Start CablesQuick Start Operation Set PC ConfigurationEnsure the J1 RF Output port is properly terminated Quick Start Ethernet ConnectionQuick Start RS-232 Connection Universal M&C Add Unit menu Universal M&C OperationUniversal M&C Status Window Signal IndicatorsFault Status Indicators Gain Adjustment Voltage, Current and Temperature DisplayRF Power Indicator Reference Source10 Universal M&C, Settings Power Up Settings Universal M&C Settings Window11 Spare Fault Wizard High Temperature Alarm Threshold Range is 0 to 125 C12 Universal M&C, IP Setup IP Setup13 Preferences Window Universal M&C Preferences16 M&C Applet loading into browser window Web-based M&C17 Enter password default is paradise Navigating the Web M&C 19 Communication Settings window descriptions 20 General Settings window descriptions 21 Fault Settings window descriptions Block Up Converter Band OperationBlock Up Converter Overview BUC Frequency Specifications Converter FeaturesSmart Reference Technology BUC RF output phase noise specificationTheory of Operation FSK Monitor and Control IFL Cable Considerations Typical System ConfigurationCommon Coaxial Cable Characteristics This page Intentionally Left Blank Swept Gain Performance TestsStandard tests Output Return Loss SpuriousInput Return Loss Intermodulation Distortion Power RequirementsSample Port Earth Ground10 I/O Test EthernetTests for units with integrated BUC Phase NoiseReference Lock 2 FSKOptional Tests Cooling System Maintenance Maintenance and TroubleshootingFan Removal and Heatsink Cleaning Fan ReplacementUnit doesn’t power up Troubleshooting guideUnit powers on, LED lamp glows red Cannot connect to Sspa through remote control interfacePossible solutions This page Intentionally Left Blank 11 Redundant Systems Redundant System ConfigurationsRedundant System Concepts 11 Redundant System with L Band input 12 Redundant SystemsSerial Protocol Overview Remote Control InterfaceBaud0 Pin j state Baud1 Pin e state Selected interface Interface SelectionDestination Address Serial communicationFrame Sync Word Source Address CommandData Packet Protocol IDData Field Command Byte Values Command NameData Tag Error Status Bytes Data Address / Error Status / Local Port Frame LengthError Code name Byte Possible Cause Value Data LengthTrailer Packet Timing issuesFrame Check Frame CheckResponse Frame Structure Serial Communications ProtocolRequest Frame Structure Data # Bytes Description Limits and Byte Values Address System Settings Data ValuesSystem Threshold Data Values Forward RF Fault Handling Minor Fault = Major Fault =Lower Byte System Condition AddressingOverview Ethernet InterfaceIPNet Interface General ConceptUDP Redirect Frame Example UDP Header Sspa Serial Protocol Frame CRCTroubleshooting IP connectivity Setting IPNet interfaceSnmp interface Snmp MIB tree Description of MIB entities SettingTextValue Value OID Description 11 Detailed Settings for Mini CO Sspa mode Device Type=841/INTEGER 11 Detailed Settings from previous13 Detailed Conditions 12 Detailed ThresholdsM&C via Snmp Universal M&C, IP Setup tabGetIF Application Parameters Tab Connecting to a MIB browserAppendix a Documentation

RA 5785 specifications

Paradise RA 5785 is an advanced recreational vehicle designed to offer luxury and comfort for both seasoned travelers and newcomers to the world of RVing. With a focus on providing an unparalleled travel experience, the Paradise RA 5785 combines an array of innovative technologies and thoughtful design features.

One of the standout characteristics of the Paradise RA 5785 is its spacious interior layout. The floor plan is optimized for maximum livability, featuring an open concept living area that seamlessly integrates the kitchen, dining, and lounge spaces. High ceilings and large windows promote natural light, creating an inviting atmosphere. The unit typically accommodates up to six people, making it ideal for families or small groups.

In terms of technology, the Paradise RA 5785 is equipped with a state-of-the-art infotainment system that includes a large touchscreen display, Bluetooth connectivity, and premium audio systems. This allows travelers to enjoy their favorite music and navigate easily while on the road. Moreover, the RV comes with smart home features, including automated lighting, climate control, and security systems, all of which can be managed via a smartphone app, providing convenience at your fingertips.

The Paradise RA 5785 is built on a robust chassis that ensures stability and safety during travel. It features a powerful engine designed for fuel efficiency and performance, enabling smooth handling on various terrains. The suspension system is engineered for a comfortable ride, even on bumpy roads, providing a stable and enjoyable journey for all passengers.

Storage is another key feature of the Paradise RA 5785. Clever design elements include hidden compartments and ample cabinetry, allowing users to stow away their gear and maintain an organized living space. The kitchen is equipped with modern appliances, including a refrigerator, microwave, and oven, catering to all culinary needs while on the road.

To ensure an enjoyable outdoor experience, the Paradise RA 5785 often includes a retractable awning, outdoor entertainment systems, and additional storage for camping gear. This promotes an seamless transition from indoor comfort to outdoor adventure, making it perfect for those who love to explore nature.

In summary, the Paradise RA 5785 represents the pinnacle of RV design, combining practical features and cutting-edge technology for an unforgettable travel experience. Its impressive amenities, spacious design, and user-friendly technologies give it a competitive edge in the market, appealing to those seeking luxury and comfort on their journeys.
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