HP 150-2000 User manual

HP Archive
This vintage Hewlett Packard document was
preserved and distributed by
www.hparchive.com
Please visit us on the web !
Scanned by on-line curator: Tony Gerbic
** For FREE Distribution Only ***

DUAL CHANNEL
DC AMPLIFIER
MODEL 150-2000
1M -150- 2000-1
INSTRUCTION MANUAL
HEWLETT _
PACKARD 1I~= SANBORN
DIVISION

SAl'ffiORN DUAL CllAJ..'rnEL DC AMPLIFIER
MODEL 150-2000
TABLE OF CONTENTS
Paragraph Page
1
2
)
4
5
6
?
8
9
10
11
12
1)
14
Functional Description
Tabulation of Characteristics
Operation: General Procedures
Operation: Starting the Dual Channel DC Amplifier
Operation: Calibrating the Dual Channel DC Amplifier
Operation: Recording with the Dual Channel DC Amplifier
I-iaintenance: Adjusting the DAl4PHTG control
Maintenance: Channel Identification
Maintenance: Tube Data
Maintenance: Fuse Data
Maintenance: Indicator Data
Maintenance: Plug-in Capacitor Data
j,iaintenance: Signal Connector Data
Maintenance: Name Plate Location
1
1
2
2
2
:3
J
4
4
4
5
5
5
5
i

SANBORlJ DUAL CF.AlHiEL..DC AMPLIFIER
140DEL 150-2000
3. OPERATION: GE JERAL PROCEDURES
There are three basic procedures in operating the Dual Channel DC
Amplifier:
STARTING:
CALIBRATION:
OPERATION:
This includes the warmup period and connecting the
signal. See paragraph 4.
An accurate recording depends on proper calibration.
The standard procedure is given. See paragraph 5.
After starting and calibrating, the operation is
straight-forward. See paragraph 6.
4. OPERATION: STARTIHG THE DUAL CRAN1-JEL DC Ai'iPLIFIER
1. Set each RANGE switch to OFF and each P01"~R switch to ON. Allow
5 minutes warmup for best stability.
2. Connect each signal with Amphenol 2-contact plug, Sanborn Ho.
10B2-1~i. Terminal 1 is the signal terminal, and terminal 2 is
ground. Note that the signal source impedance must be small in
comparison with 1.15 megohms if the source impedance is to be
neglected.
5. OPERATION: CALIBRATIFG TliE DUAL CHA;mEL DC AHPLIFIER
1. After warmup, make available an accurately measured d-c calibration
voltage between two volts and 200 volts as convenient, from a source
having the same imnedance as the signals to be recorded, if this
impedance is not negligible with respect to 1.15 megohms.
2. Set the RANGE VOLTS/CM switch to approximately half the calibration
voltage.
3. Apply the calibration voltage, and adjust the GAD: control for a
deflection represented by the formula:
Deflection = ~~bratio~ voltage
E sethng
2

SANBORN DUAL CHANNEL DC AMfLIF JER
MODEL 150-2000
6. OPERATIO~T. RECORDING WITH THE DUAL CHANNEL DC AMPLIFIER
1. After warmup and calibration, set the RANGE switch to OFF and set
the stylus base-line with the POSITION control. If the signal
has both positive and negative values, set the stylus near mid-
scale. If the signal is of one polarity only, set the stylus near
one edge of the recording chart.
2. Now turn the RANGE switch to the right until the signal gives a
reasonable stylus deflection, and start the Recorder in motion.
Set the STYLUS TEMP control for the best definition. Normally a
slight increase in temperature improves the definition when recording
high frequencies. Writing the RANGE setting and paper speed on
the chart avoids confusion when interpreting the record later on.
7. MAINTENANCE: ADJUSTING THE DAMPING CONTROL
This adjustment may be required after extended operation, or after a
tube or other component is ~placed.
1. Apply a square voltage pulse to the input with a voltage supply,
potentiometer, and switch circuit.
2. Adjust the potentiometer and the RANGE switch for one centimeter
of deflection when the signal pulse circuit is closed.
3. Adjust the DAMPING control for the best possible square wave on
the recording.
3

,I
SANBORN DUAL CHANNEL DC AMPLIFIER
MODEL 150-2000
I ,
II
11. ltfAINTENANCE: INDICATOR DATA
Symbol ~ Function
I2001 NE-51 Indicates that primary power is ap~11ed
to the Dual Channel DC Amplifier.
Sanborn No.
30B-l
12. MAINTENANCE: PLUG-IN CAPACITOR DATA
Symbol ~
'Function
Sanborn No.
572-217
572-217
572-217
Section A: filter for +360 volt
plate supply to V2003, v2004.
Section B: filter for +360 volt
plate supply to v2006, V2007.
Section C: not used.
20/20/10 Mfd.
450
volt insu-
lated can.
20/20/10 Mfd.
450
volt insu-
lated can.
Sections Aand C: filter for
-3.5 volt supply to POSITION
controls.
Section B: filter for +270 volt
plate supply to V2002, V2005.
20/20/10 Mfd Sections A, B, and C: filter for
450 volt insu- -270 volt supply to cathode return
lated can. of V2002, V2005.
C2005,
A, B" C
C2007
A, B, C
c2006
A, B, e
,
II
II
13. MAINTENANCE: SIGNAL CONNECTOR DATA
Description
Sanborn No.
Amphenol 2-ccnt~ct p~ug, mates with INPUT socket.
10B2-lFW
14. MAINTENANCE: NAME PLATE LCCATION
In case of maintenance problems beyond the scope of this manual, contact
I
II
I
II
Sanborn Company or your nearest Industrial Representative. Give the serial
number on the nameplate of your Dual Channel DC Amplifier. This name plate
is on the rear chassis wall, and is visible by opening the rear door of the
cabinet.
5

I
I
SANBORN COMPANY
REPLACEMENT PARTS
LIST
175 WYMAN STREET
RPL-150-2000-2
WALTHAM 54,
MASS.
I
TEL:
TW.,.4-6300
SANBORN DUAL CHANNEL DC AMPLIFIER
MARCH 9,
1960
MODEL 150-2000
I
HESISTORS
I
SYMBOL
VALUE (ohms) TOL(f %) WATTS
SANBORN NO. REMARKS
R2001 .1.J'K 530 53A-132J
wire Wound
IIR2002
1.~
530
53A~132J
Wire Wound
R2003 15K
51
5lD-153J
Composition
IR2004
1.2 Meg
5150A-125J
Composition
"2
R2005
10K
51·)OA-W3J
Composition
I
"2
R2006 10K
5.1 500-I03J
Composition
2
IR2007
1.2 Me~
5150A-125J
Composition
I
"2
R2008 1.2 Meg
51500-125J
Composition
"2
I
F2CC9
12 Meg
5150A-126J
Composition
"2
IR2010 400 510 53A-401J Wire
Wound
R2011 400 510
53A-40lJ
\.Ji re Wound
IR2012
27K
51
5lD-273J
Composition
R2013
68K
51
5lD-683J
Composition
IR2014
47K
515lD-473J
Composition
R2015
.~.7K 5150A-472J
Composition
I
"2
.ii2016 ~ .• 7K
51500-472J
Composition
"2
j
..:\~017 .1 Meg
5252C-104J
Composition
1
R2018 1.2 Meg
5
"2
50A-125J
Composition
I
~2019
10K
5150A-I03J
Composition
"2
R2020
10K
5150A-103J
Composition
"2
R2021 1.2 Meg
51
500-J2.:J
Composition
"2
R2022 1.2 Meg
51500-125J
Composition
"2
P-l

I
II
I
SANBORN DUAL CHANNEL DC AlvJPLIFIER
MODEL 1S0-2000
Eu~' l:n:CAL PARTS
LIST--SCBEMATIC lSO-2000-Cl SUB.
S
RESISTORS (Cont.)
SYMBOL
'¥."J~UE( Ohms)
- TOL. (f %)
WATTS
SANBORN NO.
REMARKS
R2023
12 Tier';
51
5C.
t
.-126J
Composition
"2
R2024
2.S Meg 11SOJ-2S5G Composition
"2
R202S loS Meg 11SOJ-155G Composition
2"
R2026
.S Meg 1
.1-
50H-S04G Composition
4
R2027 .25 Meg
11
SOB-254G
Composition
"4
R2028
.15 Meg 11SOH-ls4G Composttiun
"4
R2029
50K
11
SOH-S03G
Composition
"4
R2030
50K
1
.1-
50H-503G (Iomposi
tion
4
R2031 2.S Meg 11SOJ-255G Composition
"2
R2032 1.5 Meg 11SOJ-15SG COll\.positioll
2"
R2033
.5 Meg
1150H-S04G Composition
"4
I,R2034
.25 Meg 11
50H-2S4G
Composition
"4
R2035 1
SOH-1S4G
Composition
.1S
Meg 1
4"
R2036
50K
11
SOH-503G
Composition
"4
~
50K
11
SOH-503G
Composition
"4
R2038 .25
~leg
20
1S6A-39
Hi-torque ..
"2
Linear Taper
R2039
10K 20 156A-37
Linear Taper
"2
R2040
2.5 Meg 20 2
56.A-S6
Linear Taper
R2041
1.5 Meg
51
SOAB-155J
Composition
"2
R2042
1.5 Meg
51
SOAB-155J
Composition
"2
R2043 2.5.Meg 20 2
S6A-S6
Linear Toper
P-2

SANBORN DUAl. .. CuAl'J:r.r-tJ. DC lUvlFLIFIER
MODEL 150-2000
£;LECTR1CAL PARJS LIST--SCHEI"1ATIC l50-20GO-Cl RUB. 5
I
I
I
I
I
I
I
!
[
r
I
[
I
I
I
,
r
!
I
SYl'ffiOL
---
v2003
v2004
v2005
v2006
V2007
E2001
F2001
12001
J200l
J2002
J2003
J2004
J2005
J2006
J2007
P2002
P2003
P2004
P2005
TUBES (cont:l
DESCR1PrION
Type 6V6GT
Type 6V6GT
Type 6SL7GT, Aged, Tested & Selected
Type 6V6GT.
Type 6V6GT
MISCELLANEOUS
8-contact Terminal Strip
It Amp. SlOe Blo. Fuse
Neon Bulb
12-Pin Jones Connector
Octal Socket
Il-Pin MIP Socket
Octal Socket
Octal Socket
2-Contact Amphenol Connector
2-Contact Amphenol Connector
8-Contact Plug
II-Contact Plug (with cap & cable clamp)
8-Contact Plug (with cap & cable clamp)
8-Contact Plug (with cap & cable clamp)
SANBORN NO.
68A-4
68A-4
69A-6
68A-4
68A-4
64G-2
26B-l4
30B-l
lOCl2-2MX
10H8-2FX
lOBll-2FX
lOH8-2FX
lOH8-2FX
lOB2-2MX
lOB2-2MX
lOB8--lMWA
lOBll-2MW
10B8-3MW
lOB8-JMW
p-4

SANBORN DUAL CnANNBL DC ANPWF'lER
MODEL 150-2000
~~ICAL PARTS LIST--SCHEMJT:r;g,J,]O-?OCO-Cl SUB • .5
MISCELLANEOUS (cant .. )
SYMOOL
S2001
S2002
S2003
T2001
T2002
Y2001
C200l
DESCRIPI'ION
SPST Toggle Switch
l-Deck, 8-Position Wafer SWitch
l-Deck, 8-Position Wafer Switch
Regulated Power Transformer
Filament Transformer
Selenium Rectifier
.879 - .909 mfd Capacitor (Red Dot)
0847 -.878 mid Capacitor (Yellow ~t)
.816 -.846 mfd Capacitor (White Dot)
SANBORN NO.
----
62D-15A
62B-16
62B-16
66B-23
66B-5
16B-7
5B-44A,
8B-44B
8B-44c
These Capacitors are supplied with 66B-23 Transformers. When used for
Replacement the color code on the capacitor must match color code on
mating transformer.
P-5

MAINTENANCE MANUAL
for
SANBORN DUAL CHANNEL DC AMPLIFIER
MO DEL 150- 2000
- CONTENTS -
System Trouble Check
DUAL CHANNEL DC AMPLIFIER
Page
1
Trouble Shooting Chart 2
Periodic Maintenance 5
Check Chart 6
Voltage and Resistance Chart 7
Component
Location on Resistor Boards 8
SANBORN COMPANY
Waltham, Mass.
November, 1957
MM-150-2000-l

SYSTEM TROUBLE CHECK
SANBORN 150 SYSTEM
RECORDER
DUAL CHANNEL DC AMPLIFIER
Save time by first finding whet~ the fault is, by following these steps in sequenct
1. IS THERE ACTUALLY A FAULT?
Check the operator's techni~ue - try the measurements again - see that the ope!
tor isn't trying something ~he system isn't built for - check line voltage and
frequency.
2. IS THE FAULT IN THE GALVANOMETER?
Power OFF: Check that there is no roughness when moving writing arm with finge
Power OFF: Measure galvanometer coil resistance at galvanometer cap. Should b.
in vicinity of 3200 ohms.
Power
ON: Measure voltage across galvanometer coil at the galvanometer cap.
Check that 32 volts change in this voltage gives approximately 10
millimeters of stylus deflection (12.5 divisions on narrow Permapap
3. IS THE FAULT IN THE DUAL CHANNEL DC AMPLIFIER?
Connect alow test voltage into one channel of the instrument and then into the
other channel. (Voltage from a 1.5 volt flashlight battery is suggested.) If
either channel is defective, and the other channel is normal, check tubes in th;
defective channel. If both channels are defective or dead, check rectifier Y20C
and the fuse F200l.
4. DID THESE STEPS POINT OUT THE TROUBLE?
By now, you should have made a start at localizing the source of trouble. If
not, the trouble may be system-wide, or may be impossible to track down by thi~
method. \~at to do: use the Trouble Shooting Chart and Check Charts.
- 1 -

TROUBLE SHOOTING CHART
SANBORN DUAL CHANNEL DC AMPLIFIER
MODEL 150-2000
This chart assumes that the fault has been traced to the Dual Channel DC Amplifier.
SYMPTOM
Fuse blows each time
instrument turned on.
Does not work; tubes do
not light
Tubes light, but no oper-
ation all channels
No ,operation one channel
only, other channel normal
.'.,.'hO
POSITION control will not
move stylus over entire
recording channel
POSSIBLE CAUSE
Defective tube
Defective condenser
Defective transformer
Wrong size fuse
Blown fuse
Loose connectors
Defective tube
Loose connectors
Defective tube
Loose connector
Open resistor
Defective tube
Defective condenser
Matched resistor pairs
out of tolerance
No negative bias voltage
- 2 -
CHECK
Check V200l
Check
plug-in condensers
C2006, C2007, also C200l
Check
T200l, T2002
Must
be 1.25 A Slo-Blo
Check F200l
Check that power connectors
P2002, P2Q03 at chassis top
and rear are firmly in plaCE
Check V200l
Check
that signal circuit
connectors into J2004 and
J2005 are firmly in place
Check tubes in defective
channel
Check that signal circuit co
nector into J2004 or J2005
is firmly in place
Check R200l or R2002, R20l0,
R2011
Check
tubes in defective
channel(s), including recti-
fier V200l
Check
C20n
Check matched resistors

Ir
I
SYMPTOM
Stylus stays at one side
of recording channel while
instrument on
Erratic stylus motion
Low sensitivity
Non-linear
POSSIBLE CAUSE
Defective tube
Leaky condenser
Signal overload
Intermittent tube
Intermittent rectifier
Loose tube, plug-in, or
connector
Erratic signal
Intermittent circuit
element
Defective tube
Improper operation
Defective tube
No negative bias voltage
Mica condenser
Low 1 ine vo 1 tage
CHECK
Check tubes in defective
channel(s)
Check all mica condensers
If stylus returns to normal
with ATTENUATOR at OFF,
trouble probably coming in
from outside the instrument
Check all tubes
Check Y2001
Press in tightly
Check signal with meter and
oscilloscope
Check with meter and oscil-
loscope for intermittent
circuit element
Check all tubes
Check operating technique
Check all tubes
Check Y2001, R2003, C2007A,
Check
mica condensers - lea
age across or through them
can alter grid bias
Check that line voltage is
within limits
Defective circuit element, Quick check: measure for
giving incorrect circuit approximately 1130 volts at
voltages 6V6 grids for quick check c
proper operating voltages
Signal
- 3 -
Signal having high-frequenc
components or fast pulses n
not show on the recording,
but still drive tubes into
non-linear region

II
SYMPTOM
Drift
Unsatisfactory frequency
or transient (overshoot)
response, or cannot ad-
just damping control(s)
POSSIBLE CAUSE
Drifting tube
May be drift of Perma-
paper
Drifting signal
Line voltage or fre-
quency
Inadequate warmup
Drift in high-frequency
signal component
Defective tube
Improper adjustment
Leakage
CHECK
Check all tubes
See Recorder Trouble Shootin
Chart
Check with meter and oscillo
scope. See if baseline dril
with ATTENUATOR at OFF
Drifting widely or outside
limits can cause drift. ChE
with meter
Warm up at least the stated
five minutes required
High-frequency components ~a.
overload the grids and still
not show on the record as a
signal. This causes a non-
linearity, which can appear
as a drift if the high-fre-
quency component drifts. Che<
with meter and oscilloscope
Check all tubes
Re-adjust
Leakage across (or through)
R2009-C2004 or R2023-C2010.
If dirty, clean with carbon
tetrachloride or equivalent
Unsatisfactory control
of trace density
See the Recorder Trouble Shooting Chart
Noise, microphonics, or
hum
Defective tube
Defective component
Noisy signal
Loose input plug or con-
nector
Open shield connection,
or ground loop
- 4 -
Check all tubes
Check circuit with oscillo-
scope to find source of inte:
ference
Check signal with oscillosCOf
See if baseline becomes clear
with ATTENUATOR at OFF.
Plug in firmly
Check input circuit cabling

Quick check: For a quick check on operation, set POSITION to mid-scale and measure
from grid (terminalS) to ground of each 6V6 stage. Should be appro xi
mately ~130 volts. to indicate normal operation of entire channel.
(Test at 115 volt line.) Then measure from terminalS of one 6V6 to
terminalS of the other 6V6 in the same channel; should not be more
than afew volts, to show normal operation.
PERIODIC MAINTENANCE
SANBORN DUAL CHANNEL DC AMPLIFIER
MODEL 150-2000
This is recommended every 500 hours of operation, or every 3 to 6 months, as deter-
mined by experience.
1. Replace the 6V6GT tubes in each channel -V2003, V2004, V2006, V2007. Use a com-
mercial tube replacement, or use Sanborn replacement no. 68A-4.
2. Replace the 5R4GY tube in the power supply -V2001. Use a commercial tube repla(
ment, or use Sanborn replacement no. 68A-43.
3. Inspect above-chassis for loose tube, controls, plug-in components, and connector
4. Inspect below-chassis for loose resistors, condensers, terminal boards, etc.
5. Look for evidence of overheated components - check visually and by smell for burr.
insulation, transformers, resistors, condensers, etc.
6. Look for frayed or burned-away insulation.
7. Check for dents, panel scratches, corrosion, and other mechanical abuse.
8. Blowout dust and dirt with an air hose.
9. Go through the steps of the Check Chart.
- 5 -

CHECK CHARt
1. Warm up Dual Channel DC Amplifier at least five minutes. Line voltage at 115
volts. Perform following tests on each channel of the instrument.
2. Check that POSITION control will move stylus across entire recording channel.
Set stylus 20 divisions above bottom of chart.
3. Insert signal from 1.5 volt flashlight battery and series switch. Set RANGE swit
to I VOLT/CM and GAIN control full right. Check for at least 17 mm. stylus deflf
tion (21 divisions with narrow-channel Permapaper). Set GAIN for 15 divisions
deflection.
4. Intermittently operate switch and adjust DAMPING control for best possible squar
wave on the recording. Leading edge of square wave should have fast rise, with
no overshoot.
5. Insert signal from audio oscillator, with Dual Channel DC Amplifier channel set
to 10 divisions peak-to-peak recording. Response should be as shown on characte
istic curve in Instruction Manual.
- 6 -

Ii
I
I
II II
I 11
II
Ii
II
~
II
I
Ii ~
I
I
I ~
I
[ ~
II II
j
VOLTAGE AND RESISTANCE CHART
SANBORN DUAL CHANNEL DC AMPLIFIER
MODEL 150-2000
i1!
I,
TUBE 1 2 3 I4 5 6 7 8 9
..
\12001 30K*
3.5K
3.5K
30K*
(4 to 6)
(6 to 4)
+38SV 800VAC 800VAC +385V
V2002 700K
1.6M
3K 850K
1.6M
2.9VAC
2.9VAC
+130V
.22V
-3.5V
+130V
.22V
V2003
3.4VAC 90K* 90K* 1M 4SK* 6K
3.7VAC
3.1VAC
3.4VAC
+360V +360V +130V
..
V2004 .100K*
lOOK*
1.2M
4SK* 6K
3.5VAC 3.9VAC
3.9VAC 3.4VAC
+360V +360V +130V
._--
V200S 1M
1.4M
3K 1M
1.4M
2VAC
2.9VAC
2.9VAC
+130V
.12V
-3.5V +130V
.12V
---
V2006 4SK lOOK· 100K*
l.3M
4SK* 6K
3.4VAC 3.6VAC
3.6VAC
2VAC
3.4VAC
+360V +360V +130V
V2007 4SK 100K* 100K*
1.4M
4SK* 6K
3.4VAC 3.2VAC
3.2VAC
3.4VAC
+360V +360V +130V
--
_.
Readings taken with H. P. Model 4 lOB VTVM.
A
1.5K 30W resistor across pins 3-4, 5-4, 6-7, 8-7 of jack 2001 to simulate galvanometers.
VOLTAGE READINGS
POWER
ON
NO SIGNAL
ATTENUATOR
OFF
POSITION CENTER
DAMPING CENTER
MEASURE FROM EACH TUBE SOCKET TERMINAL TO GROUND
RESISTANCE READINGS:
POWER
OFF
NO SIGNAL
ATTENUATOR
OFF
POSITION FULL CLOCKWISE
DAMPING
FULL COUNTERCLOCKWISE
MEASURE EACH TUBE SOCKET TERMINAL TO GROUND
·CHARGING CAPACITOR _ 7 _

SANBORN DUAL CHANNEL DC AMPUFIER MODEL 150-2000
Gi C2008 r
~ H2019 ~
G-I H2021 ro
G-1 H2022 H:)
G1 C2009 te
G-fH2020 f-E).
G-i H2018 t--0
-~-
__ 9\
I\.' II\
i(\I
1)I
I
~I
I ~I
I0
~I
.... ,101
I
....
III
IIII
I,
\II
I\I
i\I,
II
IJ
\_--
I
-<5--
<b
E2002
E2002 ~ ~ E2003
BOTTOM VIEW OF CHASSIS
G--1 H2016 t-0
G--i H2015 r-e
G--1 H2014 l-e
G---l H2013 f-8
G-1 H2012 t-0
Q---+ H2004 t-{)
G--i R2006 ~
0-{ C2003 ~
~ R2008 ~
G--l H2007 r-E)
!~ C2002 ~
E2003
COMPONENT LOCATION ON RESISTOR BOARDS
_ 8 -

- NOTES .roond.
I+Denoles ChassiS 0
81W resistors
2 Al 20,10,2, RW2
'os ..elIas R2009, R2008,
R
2004, R2007, R2022
R2018,R202I.a
or. 5% lol.rallOt•.
Rnl.tar. R~~~:"'~~ltIOfl.
R2037 or. 'Y.
C2004 8 C2010 or. 5 •
capOCllo". measured
:::hY~~I:;ct to etalile
qraund
---.
(.lI)u ',.
e Ie
\;. ..
\ .~_ ..
I? 2003
P2004, p2005,a P2002
J2001
~\
~
J2006 a J2oo7
J2003
° ()
o III~O
0: 000
0d ,'0
J2OO2,J2004,8 J2005
Stylus T.mp.
R2037
SO K
RANGE
VOLTs/eM.
Golv • B'- ,
Golv
'B'~ ,
Gel. 'A'- •
Golv ·A· ... •
elv 'A' C.T. '
Gelv 'B' CT. :
10V AC 60'1J {I"
S ylus :B:Heof :
Stylus AHeat •
St/tlS '"'.eat Convnon
~ -unr.e 's· Input