Download Model 2520 Pulsed Laser Diode Test System Service Manual

6-8
Replaceable Parts
Model 2520 Pulsed Laser Diode Test System Service Manual
Table 6-1 (continued)
Mainframe digital board parts list
Circuit designation
Description
Keithley part no.
U38,U49
U4
U47
U48
U5
U50
U51,U52
U54
U55
U58
U59
U6
U60
U7,U9,U11,U12,U14
U8,U10,U18,U34,U46
VR1
W1-W4
Y1
Y2
32 BIT BUS SWITCH, HOTSWITCH
PROGRAMMED ROM
LARGE SCALE IC SMT
IC, QUAD 2 INPUT OR GATES
IC, GPIB ADAPTER, 9914A
IC, QUAD 2 INPUT NOR GATES
IC, HEX INVERTER
IC, 16 BIT MULTIPLYING DAC
IC, DUAL FET OP AMP
IC, 8 STAGE SHIFT, C074HC409AM
IC, HEX INVERTER
IC, OCTAL INTERFACE BUS, 75160
IC, HIGH PRECISION 10V REFERENCE
IC, HCPL0631, PACK
IC, POS NAND GATES/INVERT, 74HCT14
DIODE, ZENER 30V, BZX84C30
JUMPER
CRYSTAL, FSM327
OSCILLATOR, 30M
LSI-260
2520-802B01
LSI-244
IC-1365
LSI-123
IC-1363
IC-1366
IC-1359
IC-1128
IC-1026
IC-1367
IC-646
IC-1121
IC-1153
IC-656
DZ-106-30
J-24-1
CR-41
CR-56-4