Section 2: General operation Model 2657A High Power System SourceMeter® Instrument Reference Manual
2-6 2657A-901-01 Rev. B/December 2012
3. Power module
Contains the AC line receptacle and power line fuse. The instrument can operate
on line voltages of 100 V to 240 V AC at line frequencies of 50 Hz or 60 Hz.
4. IEEE-488
Connector for IEEE-488 (GPIB) operation. Use a shielded cable, such as the
Keithley Instruments Model 7007-1 or Model 7007-2.
5. LAN
RJ-45 connector for a local area network (LAN). The LAN interface supports
Auto-MDIX, so either a CAT-5 cross-over cable (provided), or a normal CAT-5
straight-through cable (not provided) can be used.
6. TSP-link
Expansion interface that allows a Model 2657A and other TSP-enabled
instruments to trigger and communicate with each other. Use a category 5e or
higher LAN crossover cable (Keithley Instruments model number CA-180-3A).
7. Protective earth (safety ground)
Ground screw for connection to protective earth (safety ground). Connect to
protective earth using recommended wire size (#16 AWG or larger).
8. Chassis ground
Ground screw for connections to chassis ground. This provides a connection
terminal to the equipment frame.
9. Cooling vent
Exhaust vent for the internal cooling fan. Keep the vent free of obstructions to
prevent overheating. Also see Cooling vents
(on page 2-7).
10. SMU connections
These high-voltage triaxial connectors provide connections for HI and LO, sense HI and sense LO, guard, and chassis
ground. The schematic (above the connections) provides detailed conductor information about each connector.
IEEE-488
LAN
!
!
SENSE
LO
HI
LO
GUARD
SENSE
HI
LO
3030 VDC
MAX.
250 V
MAX.
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