Keithley 2750 Service Manual

Model 2750 Multimeter/Switch System Service Manual Replaceable Parts 6-11
Replaceable Parts
U192 IC, 2 - INPUT AND GATE IC-1140
U194 IC, CONTROLLER WITH MONITOR IC-1424
U195 IC, 3 TO 8 LINE DECODER IC-1378
U206,U162 IC, PRECISION BIFET OPAMP IC-1194
VR100,VR101,VR102 DIODE, ZENER, 6.0V, BZX84B6V2 DZ-87
VR103,VR104 DIODE, ZENER, 6.8V, MMSZ5235BT1 DZ-100
VR105,VR106 DIODE, ZENER, 11V, MMSZ11T1 DZ-103
VR107,VR108 DIODE, ZENER, 4.3V, BZX84C4V3 DZ-85
VR109 DIODE, ZENER, 17V, MMBZ5247BL DZ-104
VR110,VR111 DIODE, ZENER, 10V, MMSZ5240B DZ-99
VR112,VR113,VR116,VR117,
VR119,VR120
DIODE, ZENER, 6.2V, MMSZ6V2 DZ-97
VR114,VR115 DIODE, ZENER, 3.3V, CMPZ4684 DZ-115
Y101,Y103 CRYSTAL, FSM327 CR-41
Y102 OSCILLATOR HIGH SPEED CMOS,
12MHZ
CR-37
*Order current firmware revision (for example, A01).
Table 6-1 (continued)
Model 2750 motherboard parts list
Circuit Designation Description Keithley Part No.

Keithley 2750 Specifications

General

Interface	GPIB, RS-232, Ethernet
Switching Speed	Up to 500 channels/second
Maximum Voltage	300V
Operating Temperature	0°C to 50°C
Measurement Functions	DCV, ACV, DCI, ACI, 2-wire Resistance, 4-wire Resistance, Frequency, Temperature
Resolution	6.5 digits
Current	1A
Maximum Current	1A