APN-20Z704TDN and APN-21Z704TDN Application Note Rev A April 2005

Table Of Contents

Features ... 3 Basic Functions ... 3 2.1. Zoom/Focus Lens Control... 3 3. General Operation ... 10 4. Communication Format ... 11 5. Command List... 15 5.1. Response Packet... 15 6. General Control Commands ... 18 7. Focus Control Commands ... 20 8. Zoom/Focus Operation Commands... 21 9. Preset Control Commands ... 23 10. Camera Status Control Commands ... 24 11. Key Action Commands - 1 (*NN 75 PP XX YY) ... 28 12. Key Action Commands - 2 (*NN 75 PP XX YY) ... 29 13. Contact ... 30 1. 2.

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1. Features • High Sensitive 1/4 inch Sony Super HAD CCD • Built in Auto Focus / Auto Iris • Optical Power Zoom Lens 20/21Z404’s: 26x • Digital Zoom: 10x • 20/21Z704's: 26x (260x Zoom) • Day & Night Function • WDR Function • RS-232C, RS-232 TTL, RS-422, RS-485 communication • Mirror Image function • Negative / Positive function • Preset function • OSD (On Screen Display) • Powerful MENU control

2. Basic Functions 2.1.

Zoom/Focus Lens Control

Zoom/Focus Lens Position Range Optical zoom lens position range

000 hex ~ 7A2 hex

Focus lens position controllable range

1F1 hex ~ 60F hex (It is not specified)

Digital zoom position

00 hex ~ E7 hex

Zoom Trace Mode Zoom Trace: If the zoom lens moves, the focus lens also moves. The focus lens will be moved to a certain calculated position. Lens moves to the target zoom position. Zoom Trace Mode (ZTM)

It is a zoom tracing mode

Non-Zoom Trace Mode (NZT)

When the zoom lens moves, the focus lens, so the picture will not be focused while the zoom lens moves to the target position.

One Shot Focus The camera starts the auto focusing action only one time. When the One Shot Focus Command is sent, the focus lens moves to adjust the focus for the subject. Auto Zoom The zoom lenses have a repeated action in a certain zoom range. Zone Label Editing function of zone label Day & Night Function Day Mode

IR Cut filter is closed

Night Mode

IR Cut filter is opened

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WDR Function Wide Dynamic Range function Focus Lens Control Mode Auto Focus Mode User cannot control the focus lens. Manual Focus Mode User can control Focus lens in the restricted range of calculated by camera microcomputer. Special Focus Mode User can control Focus lens as wishes. The controllable range of focus Lens is the total focus range (1F1 ~ 60Fhex). In this mode, the focus lens is controlled by the user only. (!) Auto/Manual mode is called the basic mode. (!!) In case that the current focus mode is in Special mode, you can set the Auto and Manual mode as basic focus mode. Focus Lens Operation Focus Mode Auto

Manual

Special

O

O

X

O

O

X

O

X

X

O

O

O

X

O

XO (*)

X

O

O

Not specified

Not specified

Full range

Contents Zoom Trace function Auto focusing after zoom trace action Auto focusing in normal condition Auto focusing in One Shot AF command Near / Far action (Key Action command) S-Near/S-Far action (Key Action command) Controllable focus range (*)

X: in case the basic mode is Auto mode O: in case the basic mode is Manual mode

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Focal Range (Rain focus) Function Focal Range Function protects focusing in a certain distance. If the object is placed within selected focal range distance, the camera can’t focus to the object: 10cm / 50cm / 80cm / 130cm 2m / 4m focal ranges Figure 1. 50cm focal range mode Camera

50cm

Non-focusing region (0cm ~ 50 cm)

Focusing region (50cm ~ infinite)

Preset Operation Internal Preset Mode In this mode, the camera memorizes the Zoom/Focus/Digital zoom position into the Internal Nonvolatile Memory of the camera. Total 64 presets External Preset Mode In this mode, the camera memorizes the Zoom/Focus/Digital zoom position into the Internal Volatile Memory of the camera. Total 8 presets Preset Response Packet It is a response that the zoom/focus lens will finish moving to the selected preset position. The transmission of this packet is decided by the Transmission Preset Response Packet (See Preset Control Commands). Preset Response Packet: * NN 11 11 11 YY

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Figure 2. Preset Position Moving Action

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External Preset Position Saving Method Memorize zoom lens position Memorize focus lens position Memorize digital position Select External Preset Internal Preset Position Saving Method Select Internal Preset Number Move zoom/focus lens to internal preset position what you want to save

Memorize this position as Internal preset position Key Action Command (*NN75PPXXYY) It is a basic camera control command Key Code: It is a command option of key action command. The Key Stop command of key action Command (*NN7509XXYY): This command must be followed by the key action commands. Continuous key action: If you want continuous key action service, do not send the key stop command until you want to stop the continuous key action. See the Key Action Command List.

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Figure 3. Zoom in (Tele) action

(In the position of the microcomputer of camera) Figure 4. Key Action command “Mirror”

Received Key Stop command?

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(*NN 75 09 XX YY)

Figure 5. Successive Key Action commands “Mirror” “Negative” (False Application) <Host>

<Camera> Key action command “Mirror” * NN 75 18 XX YY

User (PC)

Execute Mirror Action

Don’t Send Key action “Stop” Stop Check Key action command “Negative” * NN 75 19 XX YY

Don’t execute Negative action

(Right Application) <Camera>

<Host> Key action command “Mirror” * NN 75 18 XX YY User (PC)

Key action command “Stop” * NN 75 09 XX YY Key action command “Negative” * NN 75 19 XX YY Key action command “Stop” * NN 75 09 XX YY

Execute Mirror Action Stop Check Execute Negative action Stop Check

(!!) User must send Key Action command “STOP” before next command. If you don’t send Key action command “STOP”, the camera will not operate on Next Key action command.

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3. General Operation Camera ID 00 hex ~ FF hex (256 IDs) Camera ID check Mode ID check Skip Mode: If the checksum is right as Check Sum Method (Page 11), the camera will not check the camera ID. ID Check Mode: If the checksum is 1’s complement of the right check sum as Check Sum Method, the camera will check the camera ID. If the ID contained in command packet isn’t identical to the Current camera ID, the received command will be ignored and deleted. (EX)

* 2B 75 0000 CA: ID check skip mode * 2B 75 0000 35: ID check mode -> 35h is 1’s complement of CAh.

See the General Control Commands

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4. Communication Format 20/21Z RS-232C Communication Format Communication between camera and user is available by using RS-232C. Parameter of RS-232C Baud Rate: 9.6kbps Start bit: 1 Stop bit: 1 Data bits: 8 None Parity Flow control: XON/XOFF, RTS/CTS is not supported. Packet Structure The basic unit of communication is called “PACKET”. All bytes of the packet are ASCII format. The first byte of the packet is called “Header”. The second and third bytes are “ID” of the camera. The forth and the fifth bytes are “Command Message”. And from the sixth to the ninth bytes is “Command Option”. The last two bytes are “Check sum” of the packet. The check sum is sum of 9 bytes (byte0~byte8). The header must be ‘*’. All bytes of the packet must be a Capital Letter.

Figure 6. Command Packet Block

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Bytes of a packet Byte 0:

Header

Byte 1:

High character of camera ID

Byte 2:

Low character of camera ID Ex) current camera ID : 43 decimal 43 decimal = 2B hex Byte 1: ASCII code ‘2’(32 hex) Byte 2: ASCII code ‘B’(42 hex)

Byte 3, Byte 4:

Command

Byte 5 ~ Byte 8:

Option of command

Byte 9:

High byte of check sum

Byte 10:

Low byte of check sum

It must be the ASCII code ‘*’ (2A hex)

Check Sum Method The value of check sum is calculated as follows: Check Sum = Byte0 + Byte1+ … + Byte8 Ex) if ID = 43 d (2B hex), command = 75 hex, command option = 0000 command byte0~byte8 : * 2B 75 0000 ASCII format: 2A 32 42 37 35 30 30 30 30 Sum = 2A+32+42+37+35+30+30+30+30 = 1CA hex So, the Check Sum = CA So the complete command packet. = * 2B 75 0000 CA Response from the camera If the command packet is transmitted to the camera accurately, the camera will send the ‘response packet’. If the camera doesn’t receive the right command packet, it will not send any response packet. Response Time Most of the response packet will be transmitted as soon as the camera received the command packet. This time is more than 2ms.

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Figure 7. Response Packet Block Communication Time Delay When transmitting 1 packet (11 bytes), keep 2 milli-seconds waiting time between bytes. After transmitting the first packet, wait 25ms to transmit the next command packet. Byte delay time > 2ms Packet delay time > 25ms *) Byte delay and Packet delay is a time delay for stable communication.

Figure 8. Delay Time Setting

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Advice for communication If the command packet is transmitted only 4 bytes, then the camera will wait for remain 7 bytes continuously. At that moment, if a new packet is transmitted to the camera, the previous 4 bytes will be ignored. If the camera doesn’t send a response packet, there could be some problem in the communication line or any other communication condition. If the camera response mode is Skip Command response packet mode, then the camera will not send Command response packet. Even if the response mode is Skip Command response packet mode, the Data response packet will be transmitted to the PC.

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5. Command List 20/21Z RS-232C Command Reference All of commands must be capital letters. ‘*’: ‘X’: ‘x’: ‘NN’: ‘YY’: ‘Z’,’S’,’M’,’P’,’Q’: ‘R’: ‘ ‘: (!!):

Header Don’t Care Not specified Camera ID Check Sum Command Option Response Packet Data Indicate Response packet Caution

The command was allowed at the camera microcomputer version x.x. Not described: allowed all versions.

5.1.

Response Packet

If the camera receives any command, it will judge the Response packet. If the command packet hasn’t any error, then the camera will transmit the response packet. Command Response Packet It is a response that the camera received the command packet correctly. It has none information of camera status. It indicates only that the command is successfully received. format: * 00 00 00 00 AA (Caution) This manual does not describe the Command response packet. Data Response Packet It is a response of the camera status or zoom/focus position, or any other information of the camera. format: * QQ RR SS MM YY Preset Action Finished Response Packet It is a response that the camera finish moving to the target preset position. Format: * NN 11 11 11 YY

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Motion Detected Response Packet If the camera detects motions, the camera will send the Motion Detected Response Packet. The motion detection area and the sensitivity are set by the user – see the General Control command table.

Format: *NNDDDDDDYY One Shot AF Finished Response Packet If user commands the One Shot AF action command, then the camera will execute One Shot AF action. After the action, the camera will send the One Shot AF Finished Response Packet.

Format: *NNAAAAAAYY Figure 9. (Set the Response Packet)

Set the Transmission of Response Packet Set Release (Enable mode) (Disable Mode)

Example of Commands (cam id = 00)

Response Packet

Format

Command Response Packet

*00 00 00 00 AA *NNA800XXYY

*NNA801XXYY

Data Response Packet

*QQRRSSMMYY

Non

Non

*NNAA01XXYY

*NNAA00XXYY

*NNA102PSYY

*NNA100XXYY

If motion is detected *00DDDDDD22

*NN9F01XXYY

*NN9F00XXYY

*00A00000BB (one shot AF) *00AAAAAA10

Preset Action Finished *NN 111111 YY Response Packet Motion Detected Response *NNDDDDDDYY Packet One Shot AF Finished *NNAAAAAAYY Response Packet

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*00710000B2 (reset) *00000000AA *007C0200C6 (read camera status) *01000000AB *00C60100C4 (move to external preset 01) *00 111111 B0

Figure 10. One Shot AF & One shot AF finished response packet

Start

Start One Shot AF action

Receive One shot AF command * 00 A0 00 00 BB

No End

Send *00000000AA (Command Response)

No Finished AF?

Yes Received Packet is Correct ?

Send One Shot AF

No

Yes Yes

Send Command Response Packet?

End

No

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Yes

Send *00AAAAAA10 (One Shot AF Response)

6. General Control Commands Command Message

Command Packet

Command Option

Contents

Reset camera

*NN71XXXXYY

Reset the camera

ID on / off

*NN72XXXXYY

Toggle the camera ID. ON →OFF→ON…

ID read

*NN73XXXXYY *RR000000YY

RR

x

ID change

*NN74PPXXYY

PP

x

Key Action

*NN75PPXXYY

PP

x

PP Power on / off

*NN76PPXXYY

00 01

Set the transmission of Command Response Packet

*NNA8PPXXYY

PP

00 01

Lens Initial

*NNADXXXXYY

-

-

Change Day & Night mode

*NN9DXXXXYY

-

-

PP

00 01 02

Read current Day&Night status → D&N Auto mode → D&N Day mode → D&N Night mode

QQ

00 01

→ IR cut filter is CLOSED → IR cut filter is OPENED

Read Day & Night Status

*NN93XXXXYY *PPQQRR00YY

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Read Current Camera ID → 00 ~ FF hex (total 256 IDs) Camera ID Change Camera ID → 00 ~ FF hex (total 256 IDs) New Camera ID Key Action will be activated by this command. → Key Code See Key action command Camera Power ON/OFF → OFF → ON (Don’t) Transmit Command Response Packet → Enable Transmission of Command Response Data → Don’t Transmit the Command Response Data Execute Lens Initial action. After this action, the zoom and focus lenses will be moved to the working position. And continue the previous working. If this lens initial action is finished, then the Command Response Packet will be transmitted. Change Day & Night mode … → OFF → AUTO → ON → OFF → …

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Motion Detection

P

0 1 2

→ Disable Motion Detection Function → Enable MD: Don’t Display “MD” on screen → Enable MD: Display “MD” on screen

Q

0 1 2 3

→ Don’t output any signal → Output ‘Alarm’ signal → Output ‘Comm’ signal → Output ‘Alarm+Comm’ signal

R

0 1 2 3 4 5

→ MD area: Upper side of the picture → MD area: Lower → MD area: Left → MD area: Right → MD area: Center → MD area: Whole Region of the picture

S

X

→ 1 hex ~ F hex: MD Sensitivity (sensible ~ insensible)

*NNA1PQRSYY

(!!)

Comm signal: Motion Detection Response Packet: *NNDDDDDDYY

(ex) Display “MD” on screen and transmit the MD Response packet when motion detected, “MD” area is Center, MD sensitivity 7. *NN A1 13 47 YY

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7. Focus Control Commands Command Message Set Focus Auto Mode Set Focus Manual Mode

Command Packet

Command Option

*NN4EXXXXYY

Set Focus Mode as Auto Focusing Mode (Basic focus mode)

*NN4FXXXXYY

Set Focus Mode as Manual Focusing Mode (Basic focus mode)

Set Focus Special Mode

*NNABPPXXYY

One shot Auto Focus

*NNA0XXXXYY

Protect Auto Focusing

*NNA2XXXXYY

PP

00 01

PP

Set Focal Range

Contents

*NNA3PPXXYY

00 01 02 03 04 05 06

Set Focus Mode as Special Focusing Mode → Disable Focus Special Mode, set Basic focus mode only → Set Focus Special Mode Execute Auto Focusing only one time (!!) See Key Action Commands-2 Toggle command Protect All Auto Focusing function. Protect → release → protect → release … (!!) Power on: default status is release mode Protect focusing at a certain distance. → RM0: Disable All Focal Range → RM1: 10cm Focal Range → RM2: 50cm Focal Range → RM3: 80cm Focal Range → RM4: 130cm Focal Range → RM5: 2m Focal Range → RM6: 4m Focal Range (ex) protect focusing in the distance 50cm * NN A3 02 00 YY (Don’t) Transmit One Shot AF finish Response Packet when the camera finished the One Shot AF action.

Set the Transmission of the One Shot AF Finished Response Packet

PP *NN9FPPXXYY

00 01

→ Don’t Transmit One Shot AF finish Response Packet → Enable Transmission of One Shot AF finish Response Packet One Shot AF finish Response Packet (!!) *NNAAAAAAYY

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