Keithley 2750 Service Manual

6-16 Replaceable Parts Model 2750 Multimeter/Switch System Service Manual
Circuit Designation Description Keithley Part No.
R60,R61 RES, 4.22K, 1%, 125MW, METAL FILM R-391-4.22K
R62,R63 RES, 137, 1%, 125MW, METAL FILM R-391-137
R64,R65,R66,R67,R68,R69,R70,
R71
RES, 499, 1%, 100MW, THICK FILM R-418-499
TE101-TE110,TE122 CONN, 4-PIN, JOLO BB-125-04 TE-115-4
TE-121 CONN, 6-PIN TE-115-6
U1,U2,U3,U4,U8 IC, 8 STAGE SHIFT/STORE, MC14094BD IC-772
U11,U12,U13,U15,U17,U18 IC, CENTIGRADE TEMP SENSOR,
LM35DM
IC-906
U14 IC, RETRIG., MULTIVIB, 74HC123AM IC-788
U16 IC, 2.5V, CASCADABLE SERIAL EEPROM LSI-212
U24 IC, QUAD 2 IN AND, 74HCT08 IC-837
U6 IC, 8-CHAN ANA MULTIPLEXER,
DG408DY
IC-844
U7,U25 IC, POS NAND GATES/INV, 74HCT14 IC-656
U9,U10 IC, DUAL OPTO IC-1358
TOP COVER HEAT STAKE ASSEMBLY 7700-302A
BOTTOM CARD COVER 7702-301C
COMPRESSION SPRING SP-7-3
Table 6-5 (continued)
Model 7700 module parts list

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