Measurement-computing USB-7202 Manuel d'utilisateur télécharger pdf (Page 12)

USB-7202 User's Guide Functional Details

Modifications are required in order to use the OEM connector

We recommend that you return the device to the factory for this modification.

Should you have the capabilities to perform the modifications, the following change is required: in order to

create a USB connection via the OEM connector, locations R30and R36 must be populated. We recommend

that you populate with 0603 size 0 Ω resistors or provide solder bridges to close the gaps.

Trigger/Sync connector

The Trigger/Sync connector provides two signals — SYNC and TRIG_IN. These signals are also available

on the screw terminal (refer to

Trigger input on page 14 for details about these signals).

Trigger/Sync connector pinout

Pin Signal Name Pin Signal Name

1 TRIG_IN 2 GND

3 N/C 4 GND

5 SYNC 6 GND

7 N/C 8 GND

9 N/C 10 N/CD

Use a 0.1" box header when making connections to the Trigger/Sync connector.

The Trigger/Sync connector internally connects its SYNC and TRIG_IN pins to the screw terminal via

jumpers

P6 and P7.

Figure 3. Jumper P6 and P7 schematic

Sync jumper (P6)

The Sync jumper internally connects the SYNC pin on the Trigger/Sync connector to the SYNC pin on the

screw terminal. Remove this jumper on boards that will not send/receive the SYNC signal through the

SYNC/TRIG connector. Refer to Figure 2 on page 11 for the location of this jumper.

Trigger jumper (P7)

The Trigger jumper internally connects the TRIG_IN pin on the Trigger/Sync connector to the TRIG_IN pin

on the screw terminal. Remove this jumper on boards that will not send/receive the TRIG signal through the

SYNC/TRIG connector. Refer to Figure 2 on page 11 for the location of this jumper.

LED indicators

The USB-7202 has LEDs for power and communication status. See Figure 2 on page 11 for the location of

each LED.

LED type Indication

Power Steady green: The device microcontroller is connected to a computer or external USB hub.

Status Blinking green: data is being transferred over the USB bus.

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Measurement-computing USB-7202 Manuel d'utilisateur Page 12