Teledyne LeCroy USB Chief - Users Manual - Manual (Page 23)

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Chief User’s Manual CATC Version 1.7
Figure 2: Rear Panel
• Wide range AC connector module
— Power socket
— Enclosed fuse
— Power on/off switch
• External Clock (EXT CLK) input for future enhancement
• USB type “B” host computer connector
• Data In/Out DB-37 (37-pin) external interface connector
Figure 3: Data In/Out Connector
Use the 37-pin Data In/Out connector located on the rear of the USB Chief
Analyzer box to connect the External Interface Breakout Board.
Table 1 lists the pin-out and signal descriptions for the Data In/Out connector.
Signal inputs (IN x) function under the control of the USB Chief program and may
be set as active-low or active-high in Recording Options. Signal inputs 0 through
3 can be recorded optionally along with USB traffic and displayed in a CATC
Trace. Signal outputs (OUT x) function under the control of the USB Chief
program and are used to link any events to an external signal.
Table 1: Data In/Out Connector – Pin-Out
Pin Signal Description Pin Signal Description
1 5V, 500mA DC source 20 Ground
2 TRIGGER OUT (active low) 21 Ground
3 Not connected 22 Ground
4 IN 0 – Signal input 23 Ground
5 IN 1 – Signal input 24 Ground
6 IN 2 – Signal input 25 Ground
7 IN 3 – Signal input 26 Ground
8 IN 4 – Signal input 27 Ground
9 TRIGGER IN 28 Ground
10 CURRENT MEASURE + 29 Ground
11 CURRENT MEASURE - 30 Ground
12 OUT 0 – Signal output 31 Ground
13 OUT 1 – Signal output 32 Ground
14 OUT 2 – Signal output 33 Ground