Tektronix 2465B calibration.pdf

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DEPARTMENT OF THE ARMY TECHNICAL BULLETIN
*TB 9-6625-2295-35
CALIBRATION PROCEDURE FOR
OSCILLOSCOPE, OS-288/G
(TEKTRONIX, TYPE 2465B)
AND
TEKTRONIX, TYPES 2465B OPT46 AND 2467B
Headquarters, Department of the Army, Washington, DC
21 October 2002
Approved for public release, distribution is unlimited.
REPORTING OF ERRORS AND RECOMMENDING IMPROVEMENTS
You can improve this manual. If you find any mistakes or if you know of a way to improve these
procedures, please let us know. Mail your letter, DA Form 2028 (Recommended Changes to
Publications and Blank Forms), or DA Form 2028, directly to Commander, U.S. Army Aviation
and Missile Command, ATTN: AMSAM-MMC-MA-NP, Redstone Arsenal, AL 35898-5000. A
reply will be furnished to you. You may also provide DA Form 2028 information to AMCOM via
e-mail, fax, or the World Wide Web. Our FAX number is: DSN 788-6546 or Commercial 256-
842-6546. Our e-mail address is:
2028@redstone.army.mil.
Instructions for sending an
electronic 2028 may be found at the back of this manual. For the World Wide Web, use:
https://amcom2028.redstone.army.mil.
Paragraph
SECTION
I. IDENTIFICATION AND DESCRIPTION
Test instrument identification ............................
Forms, records, and reports................................
Calibration description........................................
II. EQUIPMENT REQUIREMENTS
Equipment required............................................
Accessories required...........................................
III.
CALIBRATION PROCESS
Preliminary instructions.....................................
Equipment setup ................................................
Vertical gain.......................................................
Triggering ..........................................................
Timing ...............................................................
Bandwidth ..........................................................
Calibrator...........................................................
Parametric measurements .................................
Final procedure ..................................................
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*This bulletin supersedes TB 9-6625-2295-35, dated 13 January 1997.
TB 9-6625-2295-35
Paragraph
SECTION
IV. MENU CALIBRATION PROCESS
Prelim inary instructions.....................................
Equipment setup ................................................
Power supply ......................................................
DAC REF and input capacitance..........................
CAL 01 horizontal...............................................
CAL 02 vertical...................................................
CAL 03 triggering ...............................................
CAL 06 vertical transient response .....................
CAL 09 parametric measurements......................
Final procedure ..................................................
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SECTION I
IDENTIFICATION AND DESCRIPTION
1. Test Instrument Identification.
This bulletin provides instructions for the
calibration of Oscilloscope, OS-288/G (Tektronix, Type 2465B), and Tektronix, Types
2465B OPT 46 and 2467B. The manufacturer's manual was used as the prime data
source in compiling these instructions. The equipment being calibrated will be referred
to as the TI (test instrument) throughout this bulletin.
a. Model Variations.
equipped with an IEEE bus.
Tektronix, Type 2465B OPT46 and 2467B OPT10 are
b. Time and Technique.
The time required for this calibration is approximately 6
hours, using the dc and low frequency technique.
2. Forms, Records, and Reports
a.
Forms, records, and reports required for calibration personnel at all levels are
prescribed by TB 750-25.
b.
Adjustments to be reported are designated (R) at the end of the sentence in which
they appear. Report only those adjustments made and designated with (R).
3. Calibration Description.
TI parameters and performance specifications which
pertain to this calibration are listed in table 1.
Test instrument parameters
Vertical gain CH1 and CH2
Table 1. Calibration Description
Performance specifications
Range: 2 mV/div to 5 V/div
Accuracy:
±2%
(1 MΩ input coupling)
±3%
(50Ω input coupling)
Accuracy:
±(1.25%
of reading + .03 div)
Range: .1 and .5 V/div
Accuracy:
±10%
∆V
cursors
CH 3 and CH 4
2
TB 9-6625-2295-35
Table 1. Calibration Description - Continued
Test instrument parameters
Performance specifications
Trigger level readout
Accuracy: Within
±[3%
of setting + 3% of p-p signal
+ 0.2 division + 0.5 mV +(0.5 mV x probe
attenuation factor)]
Sensitivity
0.35
division
Dc
to
50
CH 1 and CH2
1.0
division
at
300
Dc coupled
1.5
division
at
500
Ac coupled
0.35
division
60 Hz
1.0
division
1.5
division
0.5 x CH 1 or CH 2 requirement
to
at
at
50
300
500
MHz
MHz
MHz
MHz
MHz
MHz
CH 3 or CH 4
Horizontal timing
A sweep
Range: 500 ms/div to 5 ns/div extended to 0.5 ns with X10 mag
Accuracy: 500 and 200 ms
±(1.2%
of time interval +0.6% of FS)
100 ms to 5 ns
±(0.7%
of time interval +0.6% of FS)
X10 mag:
±(1.2%
of time interval +0.6% of FS)
Range: 50 ms/div to 5 ns/div extended to 0.5 ns with X10 mag
Accuracy:
±1.0%
of time interval +0.6% of FS
X10 mag:
±1.5%
of time interval +0.6% of FS
Accuracy:
X10 mag:
Accuracy:
X10 mag:
Accuracy:
X10 mag:
±(0.5%
of time interval + 0.3% of FS)
±(1%
of time interval + 0.3% of FS)
±(0.3%
of time interval + 0.1% of FS + 200 ps)
±(0.8%
of time interval + 0.1% of FS + 200 ps)
±(0.8%
of time interval + 0.3% of FS
±(1.3%
of time interval + 0.3% of FS)
B sweep
∆
time with cursors
∆
time with sweep delay
∆
time with cursors on B
sweep
Delay sweep
Bandwidth
Calibrator
Output voltage
Repetition period
Parametric measurement
Period accuracy
Accuracy:
±(0.3%
of delay setting + 0.6% of FS) +0 to -25 ns
Dc to 400 MHz at 5 mV or greater
0.4V
±1%
into 1 MΩ load
Two times the A SEC/DIV setting for SEC/DIV from 100 ns to
100 ms 0.1% during sweep time
0.9% + 0.5 ns + jitter error
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TB 9-6625-2295-35
SECTION II
EQUIPMENT REQUIREMENTS
4. Equipment Required.
Table 2 identifies the specific equipment to be used in this
calibration procedure. This equipment is issued with Secondary Transfer Calibration
Standards Set AN/GSM-286. Alternate items may be used by the calibrating activity.
The items selected must be verified to perform satisfactorily prior to use and must bear
evidence of current calibration. The equipment must meet or exceed the minimum use
specifications listed in table 2. The accuracies listed in table 2 provide a four-to-one
ratio between the standard and TI.
5. Accessories Required.
The accessories required for this calibration are common
usage accessories issued as indicated in paragraph
4
above and are not listed in this
calibration procedure.
Table 2. Minimum Specifications of Equipment Required
Minimum use
Manufacturer and model
specifications
(part number)
Volts out:
John Fluke, Model 5820A-5C-
Range: 10 mV to 20 V
GHz (5820A-5C-GHz)
Accuracy: ±0.5%
Time markers:
Range: .5 ns to .5 s
Accuracy: ±0.175%
Pulses:
Risetime: ±0.225 ns
Sine wave frequency range: 0 kHz to 500 MHz
Range: 0 to 20 V
John Fluke, Model 8840A/AF-
Accuracy: ± 0.025%
05/09 (AN/GSM-64D)
Used in CAL 01 adjustment procedure
Tektronix, Type 2465BOPT46
(2465BOPT46)
Common name
CALIBRATOR
OSCILLOSCOPE
DIGITAL
MULTIMETER
OSCILLOSCOPE
SECTION III
CALIBRATION PROCESS
6. Preliminary Instructions
a.
The instructions outlined in paragraphs
6
and
7
are preparatory to the
calibration process. Personnel should become familiar with the entire bulletin before
beginning the calibration.
b.
Items of equipment used in this procedure are referenced within the text by
common name as listed in table 2.
c.
Unless otherwise specified, verify the results of each test and, whenever the test
requirement is not met, take corrective action before continuing with the calibration.
Adjustments required to calibrate the TI are included in this procedure. Additional
maintenance information is contained in the manufacturer's manual for this TI.
4
TB 9-6625-2295-35
d.
When indications specified in paragraphs
7
through
13
are not within tolerance,
perform Section IV, Menu Calibration Process. After adjustments are made, repeat
paragraphs
7
through
13.
Do not perform Section IV if all other parameters are within
tolerance.
e.
Unless otherwise specified, all controls and control settings refer to the TI.
7. Equipment Setup
WARNING
HIGH VOLTAGE is used or exposed during the performance
of the calibration. DEATH ON CONTACT may result if
personnel fail to observe safety precautions. REDUCE
OUTPUT(S) to minimum after each step within the
performance check where applicable.
a.
Connect TI to a 115 V ac source.
NOTE
When
POWER
pushbutton is pressed to
ON,
TI
automatically performs a self-test sequence. Upon successful
completion of self-test, TI will be in normal operating mode.
NOTE
If instrument is subjected to greater than 85 percent relative
humidity, bandwidth is reduced by 50 MHz. After the
instrument is subjected to greater than 85 percent relative
humidity, it requires more than 50 hours of operation at less
than 60 percent relative humidity before full bandwidth is
restored.
b.
Press
POWER
pushbutton to
ON
and allow at least 20 minutes for equipment to
warm up.
NOTE
If TI displays
DIAGNSTIC, PUSH A/B TRIG TO EXIT
at
power on, one of the power-up tests has failed. If error
message on bottom line of display is
TEST 04 FAIL xx,
where xx is 01, 02, 10, or 11, stored calibration data is in
error. If this error message is displayed, press
A/B TRIG
pushbutton to exit diagnostic mode and perform Section IV.
If any other error message occurs, the failure is probably not
related to calibration. In this case, the instrument should be
repaired before attempting calibration.
c.
Press corresponding pushbutton for indications as listed in (1) through (9) below:
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