Tektronix 067-0599-00 User manual

Serial Number
067-0599-00 CALIBRATION FIXTURE
576 Calibration Unit
The 067-0599-00 Calibration Fixture was designed specifically for
calibrating and testing the performance of the 576 Curve Tracer.
Installed in place of the Standard Test Fixture plug-in, the
067-0599-00 provides accurate calibration voltages and currents for
the horizontal and vertical deflection circuits and accurate loads
for the collector supply and step generator circuits through the
external input and output lines at the test fixture interface.
External monitoring of the step generator output is available
through and EXTERNALMONITORBNCjack providing a
1
V/STEP (into
10,000 Mn) output).
The Vertical, Display Offset, Horizontal and Step Generator
switches of the 576 have matching switches on the 067-0599-00 for
easy, direct-reading, comparison-style adjusting and checking,
using the 576's own display.
The 067-0599-00 is totally dependent on the 576 for regulated
low voltage power supplies and AC line voltage.
062-1101-01
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471

Section 1
Section 2
Section 3
Section 4
Section 5
Section 6
Section 7
CONTENTS
Characteristics
Electrical
Environmental
Physical
Mechanical
Controls and Connectors
Operating Instructions
Circuit Description
Maintenance
General Information
. ..
Calibration
Schematic Diagrams
Electrical Parts List
Mechanical Parts List
Mechanical Parts List Illustrations

@
SECTION1
CHARACTERISTICS
ELECTRICAL
Type 067-0599-00
Characteristics Performance Limits
Voltage Accuracies
CALIBRATORRANGEs 25 mV, 50 mV, 100 mV, 125 mV, 200 mV:
all within 0.04%
50 mVVARIABLE
Range At least -4% to at least +4%
HORIZONTALVOLTS
COLLECTOR Within 0.5%
BASE Within 0.5%
STEP GENERATOR Within 0.5%
Current Accuracies
VERTICAL
COLLECTOR Within 0.5%
EMITTER Within 0.5%
STEP GENERATOR Within 0.5%
Resistance Ratios
DISPLAYOFFSETMULTIPLIER Within 0.04%
COLLVOLTAGE
7 10 INTO 10 MD Within 0.8%
Resistive Loads
lK COLLECTORSHORT 1 kO within 0..5%
lK + 18 K 19 kO, within 5%
1-1

Characteristics--Type 067-0599-00
1-2
ELECTRICAL(cont)
Characteristics
Resistance Loads (cont)
.1 0
40 V LOAD
Camera Power
EXTERNALMONITOROutput
(With STEP GENERATORLOADS
Switch in EXT ONLYor STEP
GEN)
Performance Limits
0.1 0, within 3%
3.6
k.O,
within 5%
75
0,
within
1%
1 V/STEP (INTO 10,000 MO),
within 0.5%
POWERREQUIREMENTS
Characteristics
Characteristics
Temperature
Operating Range
Storage Range
Warm-up Time
Performance Requirements
Power derived through test fixture
interface of the 576.
ENVIRONMENTAL
Performance Requirements
Performance requirements listed
apply over the range of 20°C to 30°C
-40°C to +65°C
10 minutes at 25°C

®
Characteristics
Construction
Chassis
Cabinet
Panel
Circuit Boards
Characteristics
Overall Dimensions
Main Unit
Height
Width
Depth
Plug-In Unit
Height
Width
Depth
Weight (Total)
Connectors
Main Unit Front
Plug-In Unit
Front Panel
Rear Panel
Panel
Characteristics--Type 067-0599-00
PHYSICAL
Information
Aluminum alloy
Aluminum alloy with blue-vinyl finish
Anodized aluminum alloy
Glass-epoxy
MECHANICAL
Information
9-1/2 inches
6-3/4 inches
10-1/2 inches
4 inches
8
inches
6-1/4 inches
~11 lbs ..
BNC
3-pin plug on coax
Amphenol-type
1-3

Characteristics--type 067-0599-00
1-4
FUNCTIONOF CONTROLSANDCONNECTORS
FUNCTION
Selects the function to be checked or calibrated.
HORIZAMP·CAL
Applies selected CALIBRATORRANGEvoltage to the 576 Horizontal
Amplifier External Input.
HORIZATTENCHECK
Applies output of the HORIZONTALVOLTSswitch to the Horizontal
Amplifier External Input.
VERTAMPCAL
Applies selected CALIBRATORRANGEvoltage to the 576 Vertical
.Amplifier External Input.
VERTCURRENTCHECK
Applies output of the VERTICALswitch to the Vertical .Amplifier
External Input.
VERTRISETIME CHECK
Applies a 0.5 V amplitude pulse to the 576's External Vertical
input and a 0.5 V, 200 µs sweep to the External Horizontal
input.
HORIZONTALRISETIME CHECK
Applies a 0.5 V pulse to the 576's External Horizontal input and
a 0.5 V, 200 µs sweep to the External Vertical Input.
HORIZ COMPENSATION
Applies a 25 V pulse to the Collector Sensing circuit in the 576.
STEP GE_N
Connects the STEP GENERATORswitch and STEP GENERATORLOADSswitch
to the- 576's base sensing, collector sensing and collector supply
circuits.
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Characteristics--Type 067-0599-00
CALIBRATORRANGE
Selects one of six voltages for Horizontal or Vertical Ampb.asic
gain calibration.
50 mVVARIABLE
Varies output of the 50 mV CALIBRATORRANGEposition only.
VERTICAL
Selects calibrated deflection factors in 20 steps from 10 A to 10 µA
Collector current or 10 µA to 10 nA Emitter current. Collector or
Emitter current output selected by setting of 576 MODEswitch.
DISPLAYOFFSETMULTIPLIER
Provides offset voltage in 20 calibrated steps to either the Hori-
zontal or Vertical Amplifier External inputs as selected by the
FUNCTIONswitch.
HORIZONTAL
BASEVOLTS
Selects six calibrated deflection factors from 20 V to 0.5 V.
COLLECTORVOLTS
Selects twelve calibrated deflection factors from two 1 k
(1000 V) positions to 0.5 V.
STEP GENERATOR
Selects six calibrated voltage deflection factors and twenty-one
calibrated current deflection factors.
STEP GENERATORLOADS
OFF
Grounds Base Sensing input to the 576 and opens the Calibration
Fixture's EXTERNALMONITORoutput circuit.
1
K
COLLECTORSHORT
Provides a
1 kO
load for the 576's Step Generator output circuit
and a ground to the Collector supply and sensing circuits.
1 K +18 K
Provides a 19
kO
load for the 576's Step Generator output circuit
and a 1
kO
load for the 576's base sensing circuit.
1-5

---- , __ --- ----
Characteristics--Type 067-0599-00
1-6
STEP GENERATORLOADS(cont)
EXT ONLY
Routes the 576 1s Step Generator output to the Calibration Fix-
ture Is EXTERNALMONITOR_ou·tput via its STEP GENERATORswitch.
The 576's base sensing circuit is grounded. The 067-0599-00
sees only external loads in this position.
STEP GEN
. 1 0
Routes the 576's Step Generator output to the Calibration Fix-
ture's EXTERNALMONITORoutput via its STEP GENERATORswitch,
loading the 576's base sensing circuit .
Provides a 0.1 0 load for the 576's Step Generator output for
checking short circuit current limiting.
40 V LOAD
Provides a 3.6 kO load for the 576's Step Generator output to
test maximum voltage output in the voltage mode.
COLLVOLTAGE+10 INTO 1 ill
Provides a 10 to 1 divider load for the 576's·Collector Supply
and grounds the base sensing circuit.
EXTERNALMONITOR,1 V/STEP (INTO 10,000 ill)
P819
BNCconnector providing output of the STEP GENERATORLOADSswitch for
external monitoring.
3-pin plug connected to 75 0 load for the 576's CAMERAPOWERoutput.
OPERATINGCONDITIONS
There are certain conditions that must be met before the performance limits
specified are valid.
The instrument must be calibrated at an ambient temperature between +20°C
and +30°C.
Unless otherwise noted, the instrument must be operating for at least 10
minutes within its environmental limits.
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Type 067-0599-00
General
SECTION2
OPERATINGINSTRUCTIONS
The 067-0599-00 Calibration Fixture was designed specifically for checking
or re-calibrating the performance of the Type 576 Curve Tracer. It pro-
vides accurate calibration voltages and currents for the Horizontal and
Vertical deflection circuits and accurate loads for the Collector Supply
and Step Generator circuits. The 067-0599-00 does this through the exter-
nal input and output lines at the 576 Test Fixture interface.
The VERTICAL, DISPLAYOFFSETMULTIPLIER, HORIZONTALand STEP GENERATOR
switches on the 067-0599-00 match the 576's switches with like names for
easy, direct-reading, comparison-style adjusting and checking, using the
576's own display for measurement. External monitoring of the 576's Step
Generator output is available through the 1 V/STEP (into 10,000 m) EXTER-
NALMONITORoutput jack.
Remove the Standard Test Fixture from the Type 576 and install the 067-0599-00
Calibration Fixture plug-in module. The 067-0599-00 is totally dependent
on the Type 576 for AC line voltage and regulated low voltage power supplies.
Turn the Type 576 on and allow at least 10 minutes warm-up before making
any checks or adjustments.
Because of the multiplicity and complexity of controls on the 576 and
067-0599-00 Calibration Fixture, checking apd/or adjusting the 576 should
be done sequentially according to the Performance Check/Calibration Pro-
cedure beginning on page 5-2 of the Type 576 Instruction Manual (Tektronix
Part Number 070-0905-00).
Performance Check Only
Beginning on page 5-4 of the 576 Manual, set all instrument controls accord-
ing to the listing. Plug the 3-pin connector from the 067-0599-00 into the
CAMERAPOWERjack of the 576 to provide a 75 0 load for the 576's +15 V
power supply. Begin performance checks with Step 5, page 5-8, doing only
those parts of each step labeled CHECKFOR - .
2-1

Operating Instructions--Type 067-0599-00
2-2
Adjustment Only
For a complete or partial adjustment of the 576's internal controls with-
out a complete performance check, start with Step 4 of the adjustment and
calibration procedure on page 5-6 of the 576 Manual. Connect the CAMERA
POWERjack on the 576. Do only those parts of each step labeled ADJUST-
and printed in red.
Calibration
To do a complete calibration of the 576, using the 067-0599-00, start the
procedure with Step 3, part f., on page 5-5 of the 576 Manual. Do each
step completely, combining adjustments and performance checks. Refer to
the INITIAL CONTROLSETTINGSlist on page 5-4 to be sure the 067-0599-00
controls are properly set up to start the calibration procedure.
Using the EXTERNALMONITOROutput
When checking or adjusting the 576's Step Generator output, always monitor
with a very high input impedance. The 067-0599-00 EXTERNALMONITORSTEP
GENand EXT ONLYoutputs are 1 V/STEP into at least 10,000 ill when the
STEP GENERATORswitch on the 067-0599-00 and the STEP GENERATORAMPLITUDE
on the 576 are in matching positions. Outputs from the rest of the STEP
GENERATORLOADSswitch are the results of the indicated loads to the 576's
circuits.
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