User manual

Operator's Manual

CANbus-TD-TDM-OM-E RevB

7. Slide the tray back into the housing, making

sure that when the tray is re-installed the USB

connector is showing.

8. Push the tray and the housing together, with

light pressure. Tighten the screws firmly but not

excessively.

Connecting the Trigger Module to the CAN Bus

Since the Trigger Module is a “node” on the CAN Bus, all of the normal connection rules apply.

The bus must be terminated correctly, and CANH, CANL, GND, etc. must be connected to the

correct locations. If you don’t make corrections to the bus correctly, the CANbus TD/TDM

Trigger Module may generate error frames, may load down your signal, and will not trigger.

Fortunately, LeCroy provides a number of standard cables to enable you to easily make

connections to high-speed, low-speed, and single-wire CAN Buses. These cables have 9-pin

DSUB socket connectors with 2 or 4 wires that are stripped and may be connected to in-circuit

wiring, banana plugs, alligator clips, etc., as necessary to connect to the CAN Bus circuit. The

part numbers for these cables are 902381-00 and 902382-00. They are usable for most

applications.

First, understand whether your CAN circuit is low-speed, high-speed, or single-wire. Then, plug

the correct cable’s 9-pin DSUB connector into the Trigger Module, and connect the wires to the

CANH, CANL, and other (as necessary).

Reference the tables below for information on the cables:

Cable Part Number 902382-00

DSUB (9-pin) Pin #

Definition

Wire Color

CANL

White

GND (low-speed) or VB- (single-

wire)

Brown