FLUKE 88系列自动数字万用表

U4 SMX88
AVAOP 80 AFI 7 9 FAI 7 8
FAO 77 AFO 76
K0 75 K1 74 K2 73 AZ 72 INT 71 P13 70 P12 69 P11 68 P10 67 P03 66 P02 65 P01 64 H4 63 H3 62 H2 61 H1 60 CK2 59 CK1 58 P00 57 TEST 56 RESET* 55 S31 54 S30 53 S29 52 VOB 51
47
536K
10V
1%
T
Q10
R37 205K 1%
SST175
R3 1.5K
VDD VSS
R24
324K
C14 1% 47 10V T
R25 210K 1%
D
S1 FRONT
11 12
6
543
R59 510
Q2 MMBT6429 MPS6560
Q13 R58 120K CR7
VSS BAV99
D
VOLTAGE & OHMS
S11(31) S12(32) S13(33) S14(34) S15(35) S16(36) S17(37) S18(38) S19(39)
VSS S20(41) S21(42) S22(43) S23(44) S24(45) S25(46) S26(47) S27(48) S28(49)
31 S11 32 S12 33 S13 34 S14 35 S15 36 S16 37 S17 38 S18 39 S19 40 VSS1 41 S20 42 S21 43 S22 44 S23 45 S24 46 S25 47 S26 48 S27 49 S28 50 VOA
9 S7 8 S6 7 S5 6 S4 5 S3 4 S2 3 S1 2 S0
H1
H2
H3
U5
ps
RPM
1(RPM)
r4
r40
r400
rmv
p28 p27 p20 p19 p12 p11 p4 p3
4b,4c RECORD 3g 3b 2g 2b 1g 1b 0g 0b
p29 p26 p21 p18 p13 p10 p5 p2 TRIG (horn) RANGE 3f 3a 2f 2a 1f 1a 0f 0a MAX
R7 1M 1W 5% F1
600V 1A
MECCA2
R6 .010 .1% 1W
A VDD
R12 10K
CURRENT SIGNAL CONDITIONING
R5 .991 .1%
2.5W WW
R48 10M
R8
R11
0
10M
+.05MAX
C26 0.01 50V
C
C31
8
0.01 D 50V
R9 D C
APCC 100 APV0 99 APV1 98
AP0 97 APV2 96 APV3 95 APV4 94
AP1 93 AP2 92 AP3 91 VSS2 90 AP4 89 AP5 88 AP6 87 AP7 86 AP8 85 ACBM 84 ACBO 83 AVAM 82 AVAOM 81
DIP
NDIP
8x-3021
NDIP
FLUKE 88-1221 (1 of 2)
BRIDGE CW
AVERAGE A/C COUNTER
R31
22.6K
0.25% MF
C24 10 10V T
R15 90K 0.1% MF
CW
R34 1K 20% .3W
R30
20K
0.25% MF
C27
120PF 50V 5% C
TP7
TP6
10V vss
T
C16
0.1 25V C
S31(54) S30(53) S29(52) S28(49) S27(48) S26(47) S25(46) S24(45) S23(44) S22(43) S21(42) S20(41) S19(39) S18(38) S17(37) S16(36) S15(35) S14(34) S13(33) S12(32) S11(31) S10(30)
100K 0.02
R4 0.25W
AP5(88) AP4(89) AP3(91)
S1 REAR 9 10
1
2
R43 1K 0.1% MF
D
VOLTS/ O H M S
R2
U1 VM08
CR1
1N4007 COM 1K
VOLTAGE & OHMS INPUT PROTECTION
E1
909K
1500V
C3
9-90pF
50V C
C19
6.8PF C2 50V C
3-11pF 100V C
CR8 BAV99
Q1 MPS6560
D
R29 100K
C20
5.6pF +/-0.25pF 1500V C
REFI(1) REFH(3) PS2(5) VDD VSS
PS1(6) VBT+
PS0(7)
AP1(93) AP2(92) APV4(94)
R19 107K 1%
R20 412K 1%
R21 100K 20% .3W
AVAOM(81) ACBO(83)
ACBM(84) AP0(97)
AGND(2)
POWER SUPPLY VBT-
CR4
Q8
1N4007
C35 1K
4.7
10V
T
BT1
9V
PDS
CR5
D
BAV99源自文库
MMBT3904 Q3
C21 R38
3e 3c 2e 2c 1e 1c 0e 0c AVG H ms % +(%) -(%) AC
1 REFI 2 AGND 3 REFH 4 VDD 5 PS2 6 PS1 7 PS0 8 BIAS 9 P20 10 P21 11 P 2 2 12 OSCIN 13 OSCOUT 14 DGND 15 P23 16 P30 17 P31 18 P32 19 P33 20 S0 21 S1 22 S2 23 S3 24 S4 25 S5 26 S6 27 S7 28 S8 29 S9 30 S10
CODE SWITCHING
VBT-
2 S2
OFF < > 3 VAC 1 VDC 7 mVDC 8
9
10
m A / A 11
uA 4
5
6 VBT-
AP6(87) P03(66)
AFO AFI FAI FAO
PDS
R54 VBT+ 1M
VSS
R42 1M
C33
C32 0.1 25V C
0.01 50V
J1
1% 2W
R1
RT1
20%
1K 1% MF
+t
4
F L A G N O1T.5EK 30%
A
RV1 910V 10%
Q14 MMBT6429 RV2 910V 10%
D D
C39
150PF 50V C
R67 10K
AVAOP(80)
REFERENCE
A
VDD R44
82K
AVAM(82)
VR1 1.23V
S9(29) S8(28) S7(27) S6(26) S5(25) S4(24) S3(23) S2(22) S1(21) S0(20)
35 S31 34 S30 33 S29 32 S28 31 S27 30 S26 29 S25 28 S24 27 S23 26 S22 25 S21 24 S20 23 S19 22 S18 19 S17 18 S16 17 S15 16 S14 15 S13 14 S12 13 S11 12 S10 11 S 9 10 S8
APV3(95) APV2(96)
APV1(98) APV0(99) APCC(100)
NDIP
FLUKE 88-1221 (2 of 2)
VBT+
CRYSTAL
MMBT3904 Q9
Q11 MMBT3906
R57 22K
VSS
TP2
R56
22K
VBT-
Q5 MMBT3906
Q7 MMBT3904
C17 22pF 50V C
R53 100K
Y1 131.072KHz
C18 22pF 50V C VSS
R41 0
R47 0
VDD
R35 665K 1%
REFI(1) AGND(2) REFH(3)
VDD PS2(5) PS1(6) PS0(7)
OSCIN OSCOUT
P23
D TP1
S0(20) S1(21) S2(22) S3(23) S4(24) S5(25) S6(26) S7(27) S8(28) S9(29) S10(30)
AVAOP(80)
D Q12 MMBT3904 VSS
TP5
TEST RESET S31(54) S30(53) S29(52)
C15 VOB
0.1 25V C VOA
NDIP
R61 10K R62 10K R63 10K R64 10K R65 10K R66 10K
K0(75) K1(74) K2(73) AZ(72) INT(71)
P12(69) P11(68) P10(67) P00(57) P02(65) P01(64)
H4(63) H3(62) H2(61) H1(60)
YELLOW S9 RPM S4
RANGE S8
ZERO S10
HOLD S6
TP3 TP4
%DUTY ALERT
S5
S3
1 20 21 36
C38 4.7
R40 22.6K
0.25% MF R46 0.02
0.25W
C28 0.47 35V
T
C29 0.47 35V
T
COM J1
R14 10K E2 0.1% M F SHIELD
C5 15 6.3V AT
COM
MECCA2
10 AMPS
F2
D
600V
J1
15A
MILLI/MICRO AMPS
J1
R10 1M 1W 5%
C
C34
0.01 D
50V C
ACTIVE FILTER
C8 0.027
63V PC
R17 1M
C9 0.027
63V PC
R18
1M
MIN/MAX S7
Z1 A/D CONVERTER
190K
8 166.06K
9 16.5835K
10
11
C10 0.47 50V M
C11 0.022 63V PP
C30 220pF 50V DC
Z1
7 1.0001K
6 10.010K
5 101.01K
4 1.1111M
3 9.996M
1
2
Q6 MPS6560
C1
0.01 1000V
M
SIGNAL CONDITIONING
R13 100K C22
1000PF
50V C
C4
C36
68PF 50V C
470PF 50V 5% C
BACKLIGHT J2 VBT+
1 2
VBT-
VSS
VSS
BEEPER
PDS
VBT+
CD4069
1
2
U6 CD4069
3
4
U6 CD4069
5
6
U6
9
8
CD4069 U6 CD4069
11
10
U6 CD4069
13
12
U6
VBT-
LS1
APCC(100) APV0(99) APV1(98) AP0(97) APV2(96) APV3(95) APV4(94) AP1(93) AP2(92) AP3(91) VSS AP4(89) AP5(88) ACBM(84) ACBO(83) AVAOM(81)
M 1&2(PS) K 2,3&4(PS)
Hz
p30 p25 p22 p17 p14 p9 p6 p1 +(ps) AUTO battery
dp1 3d dp10 2d dp100 1d dp1000 0d MIN
T m V A DC
H4
2(RPM) r4000 mV
LCD86_88
p31 p24 p23 p16 p15 p8 p7 p0 -(ps) (delta) (smooth)