2: General operation  Series 2600B System SourceMeter® Instrument 
 
2-10  2600BS-901-01 Rev. B / May 2013 
 
1. SMU connector 
2601B/2602B/2604B/2611B/2612B/2614B 
 
 
Channel B 
2602B/2604B/2612B/2614B 
 
This connector provides input/output connections for HI and 
LO, sense (S HI/S LO), and guard (G). Connections are as 
follows: 
LO = LO 
S LO = Sense LO 
G = Guard 
S HI = Sense HI 
HI = HI 
 
Channel A 
2634B/2635B/2636B 
 
Channel B 
2634B/2636B 
 
These triaxial connectors provide input/output connections for 
HI and LO, sense HI and sense LO, guard, and ground. See 
connections at left. Each connector's conductors are as 
follows: 
* Center conductor 
** Inner shield 
*** Outer shield 
 
 
 
2. Cooling exhaust vents 
Exhaust vent for the internal cooling fan. Keep the vent free of obstructions to 
prevent overheating. Also see Cooling vents (on page 2-12).