NEC NP-UM361X-WK - User Manual

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Overview

Function Description
Important Technical Specifications
Usage Features
Maintenance Features

This document is a Projector Control Command Reference Manual, specifically Revision 7.1, published by NEC Display Solutions, Ltd. between 2014 and 2020. It details the commands used to control NEC projectors from external devices like PCs via serial port or network connections. The manual assumes basic knowledge of projectors and refers to the operation manual for model-specific functions and adjustments.

Function Description:

The manual outlines a comprehensive set of commands for controlling various aspects of an NEC projector. These commands cover fundamental operations such as power management, input switching, and mute functions for picture and sound. More advanced controls include picture adjustments (brightness, contrast, color, hue, sharpness), volume adjustments, and aspect ratio settings.

For lens control, the manual provides commands for adjusting zoom, focus, and horizontal/vertical lens shift. It also includes functionalities for managing lens memory, allowing users to store, move, and reset lens positions, as well as set options like "LOAD BY SIGNAL" and "FORCED MUTE" for lens memory.

Information retrieval is a key function, with commands to request error statuses, general projector information (including projector name, lamp usage time, and filter usage time), lamp-specific data (usage time and remaining life, reflecting eco mode settings), Carbon Savings values (total and during operation), and model name. Users can also request running status (power status, cooling process, operation status), input signal status (signal switch process, signal list number, selection signal type, content displayed, display signal type), and mute statuses (picture, sound, onscreen, forced onscreen, and onscreen display). Furthermore, commands exist to retrieve LAN projector name, MAC address, PIP/Picture by Picture settings, and Edge Blending mode settings.

Control over specific projector features extends to freeze control (turning the function on or off), sending remote key codes, and managing the lens shutter (open and close). For network-connected projectors, commands are available to set the LAN projector name, PIP/Picture by Picture, and Edge Blending modes. Audio selection can also be set via command.

Important Technical Specifications:

The manual details the communication conditions for connecting to the projector.

Serial Connection (RS-232C compliant):
- Baud rate: 115200, 38400, 19200, 9600, 4800 bps
- Data length: 8 bits
- Parity bit: None
- Stop bit: 1 bit
- Communication mode: Full duplex
- Pin Assignment (D-SUB 9P):
  - Pin 2: RxD (Projector) to TxD (External device)
  - Pin 3: TxD (Projector) to RxD (External device)
  - Pin 5: GND (Projector) to GND (External device)
  - Pin 7: RTS (Projector) to CTS (External device)
  - Pin 8: CTS (Projector) to RTS (External device)
  - Other pins (1, 4, 6, 9) are not used.
LAN Connection (Wired):
- Data rate: Auto switchable (10/100 Mbps)
- Supported standard: IEEE802.3 (10BASE-T), IEEE802.3u (100BASE-TX, Auto-Negotiation)
- Pin Assignment (RJ-45 8-pin connector):
  - Pin 1: TD+ (Transmit Data (+))
  - Pin 2: TD- (Transmit Data (-))
  - Pin 3: RD+ (Receive Data (+))
  - Pin 6: RD- (Receive Data (-))
  - Other pins (4, 5, 7, 8) are not used.
- TCP port number: 7142
LAN Connection (Wireless):
- Details are referred to the operation manual of the wireless LAN unit.

The command structure involves hexadecimal notation, with parameters like Control ID (ID1), Model Code (ID2), Data Length (LEN), variable-length data (DATA??), and Checksum (CKS). Error responses include specific error codes (ERR1, ERR2) that indicate the cause of a failed command execution, such as unrecognized commands, unsupported commands, invalid values, memory errors, or operational failures.

Usage Features:

The manual provides a detailed list of commands, each with its description and page reference. Commands are presented with their hexadecimal structure, including parameters for Control ID, Model Code, Data Length, and Checksum. For commands requiring specific data, the "Data part" section outlines the item, its possible values, and descriptions.

Command Structure: Commands typically follow a [Start Code] [Command ID] [Data Length] [Data] [Checksum] format. For example, 02h 88h <ID1> <ID2> 0Ch <DATA01> - <DATA12> <CKS> for error status requests.
Response Structure: Responses indicate success or failure. Successful responses often include requested data, while failed responses provide error codes.
Checksum Calculation: A clear example is provided for calculating the checksum by summing all preceding bytes and taking the low-order one byte of the result.
Error Handling: A comprehensive error code list (ERR1 and ERR2 combinations) helps in diagnosing command execution failures.
Command Examples: Many commands include practical examples, such as setting brightness to "10" or "-10", or sending a remote key code like "AUTO".
Information Notes: Important information, such as conditions under which certain operations are turned off (e.g., picture mute, sound mute), or how usage times are updated (one-second units, updated at one-minute intervals), is highlighted.
Relative vs. Absolute Adjustments: For picture and volume adjustments, users can specify either an absolute value or a relative value, offering flexibility in control.
Lens Control: For continuous lens adjustments (zoom, focus, shift), specific commands drive the lens in plus or minus directions for defined durations (1 second, 0.5 second, 0.25 second) or continuously. A separate "Stop" command (00h) is used to halt continuous lens movement.

Maintenance Features:

The manual includes commands that provide information relevant to projector maintenance and longevity:

Error Status Request (009): Provides detailed information on various errors, including cover errors, temperature errors, fan errors, power errors, lamp errors (usage time exceeded, not present, data error, replacement moratorium), filter usage information, mirror/lens cover status, and system errors. This is crucial for proactive troubleshooting and maintenance.
Filter Usage Information Request (037-3): Retrieves filter usage time and filter alarm start time, allowing users to monitor filter health and plan replacements.
Lamp Information Request 3 (037-4): Provides lamp usage time and remaining lamp life percentage, which are critical for lamp replacement planning. It notes that these values reflect eco mode settings.
Carbon Savings Information Request (037-6): Allows retrieval of total carbon savings and carbon savings during operation, which can be useful for environmental impact tracking.

The document also mentions that some models cannot receive commands in standby mode and refers to the Appendix for "Standby Mode setting for receiving commands," indicating a power management feature that might affect remote control. The revision history shows continuous updates to supported commands and descriptions, reflecting ongoing product development and maintenance of the control interface.