Connections to test continuity using a switching module are shown below. Because this is a 2-wire
ohm measurement, channels 1 through 40 of a 40-channel switching module can be used.
Figure 65: Continuity connections using a switching module
Continuity testing procedure
If the Series 3700A is in remote, place the instrument in local by pressing the LOCAL key (or the
EXIT key).
Refer to DCV measurements for function configuration and menus.
1. Select the continuity measurement function:
a. Press the CONFIG key, and then press the DMM key. FUNC flashes on, then off.
b. Press the ENTER key or navigation wheel . The "Function?" menu is displayed.
c. Turn the navigation wheel to highlight CONT, then push the navigation wheel to select it.
d. Press the EXIT key to leave the "Function?" menu.
2. Set threshold resistance:
a. Press the CONFIG key, and then press the DMM key. FUNC flashes on, then off.
b. Turn the navigation wheel to scroll to the THRESHOLD menu item, and then press the ENTER key.
c. Using the navigation wheel , set the resistance to be used as a threshold (1 Ω to 1000 Ω.
d. Press the ENTER key to set.
e. Press the EXIT key to leave the "CONT ATTR MENU."
3. Apply the resistance to be tested. If using a switching module, perform the following steps to
close the appropriate channel.
a. Use the navigation wheel to dial in the channel number.
b. Press the CLOSE key.
4. Press the TRIG key and observe the displayed reading.
5. To measure other switching channels, repeat steps 5 and 6.
If the measured circuit is below the set threshold level, the instrument will display the resistance
readings. If the measured circuit is above the threshold level, the instrument will display the message
"OPEN."
6. To disable continuity testing, select a different function (for example, DCV).
7. When finished, press the OPENALL key to open all channels.
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