Parts List; Front Panel - Stanford Research Systems SIM983 Operation And Service Manual

5 – 6
5.1.2.6 Output filter
5.1.2.7 Output microvoltmeter

5.1.3 Front panel

5.2 Parts List

STANFORD RESEARCH SYSTEMS, INC.
SIM983 Scaling Amplifier
BILL OF MATERIALS
Item Qty. Reference
1 2 C101,C102
2 10 C103,C110,C111,C205,C221,
C222,C223,C224,C225,C226
3 1 C104
4 1 C105
5 3 C106,C107,C108
6 5 C109,C217,C218,C219,C220
7 1 C201
8 2 C202,C210
9 3 C203,C204,C209
10 2 C206,C216
11 2 C207,C213
12 1 C208
13 1 C211
14 2 C212,C214
15 1 C215
The performance of the passive filter, composed of L201, R226, R227,
and C211, is described on Schematic Page 2. The filter eliminates
the broad-spectrum noise of high-bandwidth amplifiers Q201, U208,
and U211 beyond a few megahertz, while adding a negligible amount
of overshoot in the step response.
The analog-to-digital converter (ADC) used for autocalibration is a
part of microcontroller U107. The output signal is amplified by pre-
cision op-amp U217, then shifted by 2 5 V by shunt reference D201
and fed into the ADC.
Bright red 7-segment LED displays U302, U304, U306, U307, U309,
U311, U313, and U314, and overload LEDs D301 and D302 are driven
by shift registers U301, U303, U305, U308, U310, U312, and U315.
Circuit Board (1 of 1)
May 5, 2006
Part
22µ T
10µ T
330p
9.0--50p
1000p
1.0µ T
2.7p NP0 ±0.25p
3.3p NP0 ±0.25p
1.5p NP0 ±0.25p
2.2µ MPE 5%
4.7µ MPE 5%
0.5p NP0 ±0.25p
1500p NP0 5%
1.0µ MPE 5%
10µ MPE 10%
Revision D
SRS P/N Manufacturer Manf. P/N
5-00327-030 VISHAY 199D226X9035E6B1
5-00098-030 VISHAY 199D106X9035D2B1
5-00381-100 KEMET C1206C331J5GACTM
5-00106-090 XICON 24AA024
5-00387-100 KEMET C1206C102J1GACTM
5-00099-030 VISHAY 199D105X9035A2B1
5-00630-100 KEMET C1206C279C5GACTM
5-00357-100 KEMET C1206C339C5GACTM
5-00353-100 KEMET C1206C159C5GACTM
5-00584-050 PANASONIC ECQ-E1225JFB
5-00073-050 XICON 146-250V4.7K
5-00592-100 AVX 12065A0R5C
5-00389-100 KEMET C1206C152J5GACTM
5-00245-050 WIMA MKS4/1/63/5RM10
5-00072-050 PANASONIC ECQ-E1106KF
SIM983 Scaling Amplifier
Circuit Description