
2638A 
Users Manual 
3-4 
Source on Channel 106.
Channel Reserved
3-Wire or 4-Wire Function
Sense wires connected 
directly across from source 
on Channel 116.
Note: For 3-Wire 
connections, leave the 
H sense open.
 
hce026.eps 
Figure 3-2. 3-Wire and 4-Wire Channel Reservation