dart M Interface Description#
一般信息#
The dart M interface is a Basler-specific interface. It comprises three components: the camera module, a flat flex cable (FFC), and either a Basler dart M Interface Board or custom hardware.
相机连接#
The interface to the Basler dart M camera module is a 20-pin FFC connector. The connector provides connections for image transfer via four differential signal pairs, input and output signals and power supply.
Flexible Flat Cable (FFC) Connector#
The 20-pin connector on the camera module is a flexible flat cable (FFC) connector by Hirose Electric Co. The connector order code is Hirose FH67 (FH67-20S-0.5SV) FFC/FPC connector.
NOTICE – Wrong orientation of the FFC cable may damage the electronics.
The ends of the FFC cable are not specific, i.e., you can connect each end either to the camera module connector or to the connector of the interface board or of the dart M GigE switch. But it's important that you make sure to insert the cable in the correct orientation, i.e., the red conducting paths of the FFC cable must face the boards as shown in the following image. The image illustrates an interface board example, but the same principle applies to the switch.
FFC Connector Pinout#
In the image below, pin 1 of the FFC connector is indicated by an arrow.
The Hirose FH67-20S-0.5SV connector provides twenty signal pins to support shielded FFCs/FPCs. These ground contacts are connected to the Basler dart M camera module's ground to provide return path for the power supply and to provide a stable reference plane for the impedance-controlled signals. The following table shows the details for these twenty signal pins.
| 引脚编号（相机端） | 引脚名称 | 功能 |
|---|---|---|
| 1 | VCC | 电源a |
| 2 | VCC | 电源a |
| 3 | LED | Status LEDb |
| 4 | - | Reservedc |
| 5 | - | Reservedc |
| 6 | Line 2 | General pupose output lined |
| 7 | Line 1 | General purpose input lined |
| 8 | GND | GNDe |
| 9 | D1+ | Data Interfacef |
| 10 | D1- | Data Interfacef |
| 11 | GND | GNDe |
| 12 | D2+ | Data Interfacef |
| 13 | D2- | Data Interfacef |
| 14 | GND | GNDe |
| 15 | D3+ | Data Interfacetf |
| 16 | D3- | Data Interfacef |
| 17 | GND | GNDe |
| 18 | D4+ | Data Interfacef |
| 19 | D4- | Data Interfacef |
| 20 | GND | GNDe |
-
单相机供电电压，标称值为 5 VDC。连接所有引脚。
-
Reserved for indicating camera module status
-
Reserved for future SLP use
-
Output can be used e.g. to control external lightning or to synchronize other cameras. Input can be used e.g. to trigger exposure.
-
All GND pins, including the six shield GND contacts on the opposite side of the connector, must be connected to a common GND plane. Avoid long PCB traces, prefer direct vias.
-
Differential data signals. Signal standard depends on Basler dart M camera module.
LED 状态指示灯#
指示相机工作情况（LED 亮起 = 相机正在工作）。
通过将 DeviceIndicatorMode 参数设置为 Inactive 可以使 LED 指示灯进入彻底熄灭状态。
LED 状态指示灯#
| LED 状态指示灯 | 含义 |
|---|---|
| 熄灭 | 未通电 |
| 绿色常亮 | 已通电，已建立网络连接 |
| 反复呈绿色闪烁（3 次短 – 3 次长 – 3 次短），直到错误得到纠正 | 系统错误（例如内部错误） |
| 反复呈绿色闪烁（3 次长），直到错误得到纠正 | 用户错误（例如温度错误） |
| 交替：亮绿色/关闭 | 链接断开（已通电，但没有 GigE 连接） |
| 交替：亮绿色/暗绿色 | 分配 IP 地址 |
| 具有周期性、短暗相的稳定绿色 | 网络冲突 |
电气要求#
警告 — 触电危险
使用未经批准的电源可能会导致触电，从而可能造成严重伤害或死亡。
- 必须使用符合安全特低电压 (SELV) 和限功率电源 (LPS) 要求的电源。
- 如果您使用供电集线器和供电开关，它们必须满足 SELV 和 LPS 要求。
警告 – 火灾隐患
使用未经批准的电源可能会导致火灾和烧伤。
- 必须使用符合限功率电源 (LPS) 要求的电源。
- 如果您使用供电集线器和供电开关，它们必须满足 LPS 要求。
注意 – 错误的电压会损坏相机模块。
相机供电和 I/O 供电必须符合下文指定的安全工作电压范围。
绝对最大额定值#
| 引脚名称 | 绝对最小值 | 绝对最大值 |
|---|---|---|
| VCC | -0.3 VDC | 6.5 VDC |
| Line 1 | -0.4 VDC | 5 VDC |
电源电流#
| 引脚名称 | 提示 | 标称值（推荐） | 最大值 |
|---|---|---|---|
| VCC | Maximum power to be provided via the VCC pins is 6 W at 5 VDC nominal supply voltage. | 因相机模块类型而异 | 1.2 A |
输入电压#
| 引脚名称 | 提示 | 最小值 | 标称值（推荐） | 最大值 |
|---|---|---|---|---|
| VCC | - | 4.5 VDC | 5.0 VDC | 5.5 VDC |
| Line 1 | 输入低压 | - | 0.0 VDC | 0.63 VDC |
| Line 1 | 输入高压 | 1.17 VDC | 1.8 VDC | - |
输出电压#
| 引脚名称 | 提示 | 最小值 | 标称值（推荐） | 最大值 |
|---|---|---|---|---|
| Line 2 LED | 输出低压 | - | - | 0.45 VDC |
| Line 2 LED | 输出高压 | 1.35 VDC | - | - |
Output voltages: When pins are not loaded. Observe voltage drop of internal 680 ohms series resistors.
GigE Data Interface#
| 引脚名称 | 功能 |
|---|---|
| D1+, D1- | MDI3 |
| D2+, D2- | MDI2 |
| D3+, D3- | MDI1 |
| D4+, D4- | MDI0 |
Pins listed above: 1000BASE-T IEEE 802.3 compliant phy MDI data pair with 100 ohms termination
Data Interface Trace Lengths and Delays#
The table below shows the trace lengths and approximated signal delays of the data interface on a camera module.
信息
Signal delay values were calculated assuming a signal velocity of 6 ns/m.
| 信号名称 | 走线长度 [mm] | 信号延迟 [ps] |
|---|---|---|
| D1+ | 6.57 | 39.42 |
| D1- | 6.58 | 39.48 |
| D2+ | 6.59 | 39.54 |
| D2- | 6.62 | 39.72 |
| D3+ | 6.51 | 39.06 |
| D3- | 6.58 | 39.48 |
| D4+ | 6.70 | 40.20 |
| D4- | 6.63 | 39.78 |