•When an ANSWER command is required

The unit sends back the status or data, as shown in the figure.

Transmission command (→ The unit)

Response command (← The unit)

[STX]

QOP

 

[ETX]

[STX]

OPL

[ETX]

Status inquiry command

 

Status information command

Transmission command (→ The unit)

Response command (← The unit)

[STX]

QRV

 

[ETX]

[STX]

QRV:1.01:1.01:1.00:1.10 [ETX]

Version inquiry command

 

 

Sends back data.

 

 

 

 

 

 

 

•About ACK code

After receiving an command from the PC, the unit sends back the ACK code to the PC in 20 ms or less. [ACK] = Reception succeeded (ASCII code: 06H)

After the ACK code sending back and the command processing has completed, the unit sends back the response com- mand to the PC.

Example:

These are examples for the following operations.

1.Login with the user name of "ADMIN" and with password of "12345".

2.Display images from the camera channel 1 on the monitor 2.

3.Start playback from the point of January 1 2003, 3:00 p.m.

4.Logout

(1)(This unit -> PC) Login

[STX]AD001;OLI:ADMIN[SP] [SP] [SP] [SP] [SP] [SP] [SP] [SP] [SP] [SP] [SP] [SP] [SP] [SP] [SP] [SP] [SP] [SP] [SP] [SP] [SP] [SP] [SP] [SP] [SP] [SP] [SP] [SP]:12345[SP] [SP] [SP] [SP] [SP] [SP] [SP] [SP] [SP] [SP] [SP] [SP] [SP] [SP] [SP] [SP]

[SP] [SP] [SP] [SP] [SP] [SP] [SP] [SP] [SP] [SP] [SP][ETX]

When receiving the command above, this unit will start the login procession of the user name of "ADMIN".

(2)(This unit -> PC) Response against (1). [STX]AD001;OLI:1[ETX]

(3)(PC -> This unit) Select the monitor 2 [STX]AD001;OMS:001[ETX]

(4)(This unit -> PC) Response against (3). [STX]AD001;OLI:1[ETX]

(5)(PC -> This unit) Display images from the camera channel 1. [STX]AD001;OCS:00001[ETX]

(6)(This unit - > PC) Response against (5).

[STX]AD001;OCS:00002[ETX]

(7)(PC -> This unit) Playback from the designated time point. [STX]AD001;ZTP:20030101150000[ETX]

When receiving the command above, this unit will start playback from the point of January 1 2003, 3:00 p.m.

(8)(This unit - > PC) Response against (7). [STX]AD001;ZTP: 200301011500000[ETX]

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Panasonic WJ-HD309 141, When an Answer command is required, Transmission command → The unit Response command ← The unit
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WJ-HD309 specifications

The Panasonic WJ-HD309 is a formidable Digital Video Recorder (DVR) designed to cater to the needs of sophisticated surveillance systems. This device stands out for its impressive array of features and robust functionality, making it ideal for applications in various sectors including retail, transportation, and public safety.

One of the main features of the WJ-HD309 is its capacity to record high-quality video at resolutions up to 4CIF. This level of detail ensures that users can easily identify subjects, read license plates, and monitor critical activities with clarity. The DVR also supports multiple video input formats, offering flexibility in terms of camera compatibility.

In terms of storage, the WJ-HD309 is equipped with a large internal hard drive, enabling extensive video storage without sacrificing performance. Users can benefit from adjustable recording modes, including continuous, scheduled, and event-triggered recording. This versatility allows organizations to optimize their storage usage according to their specific needs.

The DVR’s advanced motion detection technology plays a crucial role in minimizing false alerts and focusing on relevant events. This feature enhances the efficiency of surveillance operations by ensuring that recorded footage is both meaningful and actionable. Additionally, the WJ-HD309 provides various monitoring modes, allowing for real-time viewing through either a local display or remote access via networked devices.

Connectivity is another highlight of the WJ-HD309. It supports multiple network protocols, enabling users to access their recordings and live feeds remotely. This capability extends surveillance and monitoring to smartphones, tablets, and computers, thereby enhancing operational convenience and responsiveness. The inclusion of PTZ (Pan-Tilt-Zoom) control further enables users to manage camera angles and zoom functions seamlessly.

Durability and reliability are key characteristics of the Panasonic WJ-HD309. The unit is built to withstand the rigors of continuous operation, with features like thermal management to prevent overheating and ensure longevity. Panasonic’s commitment to security and performance is evident in this DVR model, which offers a secure environment for storing sensitive footage.

Overall, the Panasonic WJ-HD309 is a powerful DVR that combines high-definition recording, flexible storage options, advanced motion detection, and convenient connectivity. Its technical specifications and feature set make it a preferred choice for organizations looking for reliable and effective security solutions. With the WJ-HD309, users are well-equipped to enhance their surveillance operations and respond effectively to security challenges.
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