User manual

Operating the Meter from the Front Panel
Selecting a Measurement Function 3
3-17
Table 3-4. RS-232 Pin Out
1234
6789
5
eue23.eps
Pin # Description Pin # Description
1 +5 V OUT 2 RS-232 RXD
3 RS-232 TXD 5 RS-232 GND
6 Trigger Out 9 Trigger In
Figure 3-12 shows a method for using the +5 V OUT (pin 1) signal with an external
switch to trigger the Meter.
+5 V Out (Pin 1)
Trig In (Pin 9)
eue24.eps
Figure 3-12. External Trigger Circuit