HP 5340A Manual

___________
*This bulletin supersedes TB 9-6625-2021-35, dated 20 June 1997.
*TB 9-6625-2021-35
SUPERSEDED COPY DATED 20 JUNE 1997
DEPARTMENT OF THE ARMY TECHNICAL BULLETIN
CALIBRATION PROCEDURE FOR
FREQUENCY COUNTER
HEWLETT-PACKARD, MODEL 5340A
AND
MICROWAVE FREQUENCY COUNTER
TD-1225A(V)1/U (HEWLETT-PACKARD, MODEL 5342A/H14),
TD-1225A(V)2/U (HEWLETT-PACKARD, MODEL 5342A/H16) AND
HEWLETT-PACKARD, MODELS 5342A AND 5343A
Headquarters, Department of the Army, Washington, DC
26 June 2000
Approved for public release, distribution is unlimited.
REPORTING OF ERRORS
You can help improve this publication by calling attention to errors and by
recommending improvements and stating your reasons for the
recommendations. Your letter or DA Form 2028, Recommended Changes to
Publications, should be mailed directly to Commander, U. S. Army Aviation and
Missile Command, ATTN: AMSAM-TMD-LP, Redstone Arsenal, AL 35898-5000.
FAX to DSN 788-2313 (Commercial: 256-842-2313),. A reply will be furnished
directly to you.
Paragraph
Page
SECTION I. IDENTIFICATION AND DESCRIPTION
Test instrument identification .......................... 12
Forms, records, and reports ............................. 23
Calibration description ..................................... 33
II. EQUIPMENT REQUIREMENTS
Equipment required ......................................... 44
Accessories required ......................................... 54
III. CALIBRATION PROCESS FOR FREQUENCY
COUNTER HEWLETT-PACKARD, MODEL
5340A
Preliminary instructions ................................
.........
65

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SECTION III
(Continued) Paragraph
Page
Equipment setup................................
..................
75
Time base stability option 001 only
.....................
86
Self-check................................
..............................
97
10 Hz to 250 MHz frequency and 1 MΩinput
sensitivity check................................
...................
10 7
10 Hz to 18 GHz frequency and 50Ωinput
sensitivity check................................
...................
11 8
Power supply................................
........................
12 10
Final procedure ................................
....................
13 10
IV. CALIBRATION PROCESS FOR MICROWAVE
FREQUENCY COUNTER TD-1225A(V)1/U
(HEWLETT-PACKARD, MODEL 5342A/H14),
TD-1225A(V)2/U (HEWLETT-PACKARD,
MODEL 5342A/H16) AND HEWLETT-
PACKARD, MODELS 5342A AND 5343A
Preliminary instructions................................
......
14 11
Equipment setup................................
..................
15 11
Time base stability (option 001, H14, H16,
time base 10544A and model 5343A)
...................
16 12
Self-check................................
..............................
17 13
Frequency and sensitivity check -10 Hz to
520 MHz ................................
...............................
18 13
Frequency and sensitivity check -500 MHz to
18 GHz................................................................
..
19 15
Power supply................................
........................
20 15
Final procedure ................................
....................
21 16
SECTION I
IDENTIFICATION AND DESCRIPTION
1. Test Instrument Identification. This bulletin provides instructions for the
calibration of Frequency Counter Hewlett-Packard, Model 5340A and Microwave
Frequency Counter TD-1225A(V)1/U (Hewlett-Packard, Model 5342A/H14), TD-
1225A(V)2/U (Hewlett-Packard, Model 5342A/H16) and Hewlett-Packard, Models 5342A
and 5343A. The manufacturer's manuals were 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. Variations among models are described in text.
b. Time and Technique. The time required for this calibration is approximately 3
hours, using the dc and low frequency and microwave technique.

TB 9-6625-2021-35
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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. When adjustments are in tables, the (R) follows the designated adjustment.
Report only those adjustments made and designated with (R).
3. Calibration Description. TI parameters and performance applications which pertain
to this calibration are in table 1.
Table 1. Calibration Description
Test instrument parameters Performance specifications
HEWLETT-PACKARD, MODEL 5340A
Time base: Option 001 only Frequency: 10 MHz
Aging rate: <±5 x 10-10 per day after 24 hour warm-up
Line variation: <±1 x 10-10 for 10% line variation
Self-check Counts and displays 10 MHz for resolution selected
Accuracy: ±1 count, ±time base error
Signal input: 50Ωinput
1 MΩinput
Frequency range: 10 Hz to 18 GHz
Sensitivity: -30 dBm, 10 Hz to 500 MHz
-35 dBm, 500 MHz to 10 GHz
-25 dBm, 10 to 18 GHz
Frequency range: 10 Hz to 250 MHz
Sensitivity: 50 mV rms
TD-1225A(V)1/U (HEWLETT-PACKARD, MODEL 5342A/H14), TD-1225A(V)2/U (HEWLETT-PACKARD,
MODEL 5342A/H16) AND HEWLETT-PACKARD, MODELS 5342A AND 5343A
Time base:
Option 001 and time base 10544A,
H14 and H16
Frequency: 10 MHz
Aging rate: <±5 x10-10 per day after 24 hour warm-up
Line variation: <±1 x 10-10 for 10% line variation
Self-check Counts and displays 75 MHz for resolution selected
Accuracy: ±1 count, ±time base error
Signal input:
BNC 50Ωposition
BNC 1 MHz position
Type N connector TD-1225A(V)1/U and
(5342A) 1 MΩinput connector
APC-3.5 male with collar (SMA compatible)
Frequency range: 10 Hz to 520 MHz
Sensitivity: 25 mV rms
Frequency range: 10 Hz to 25 MHz
Sensitivity: 50 mV rms
Frequency range: 500 MHz to 18 GHz
Sensitivity: -25 dBm, 500 MHz to 12.4 GHz
-20 dBm, 12.4 to 18 GHz
Frequency range: 500 MHz to 26.5 GHz1
Sensitivity: -33 dBm, 500 MHz to 12.4 GHz
-28 dBm, 12.4 to 18 GHz
-23 dBm, 18 to 26.5 GHz1
1Not checked above 18 GHz.

TB 9-6625-2021-35
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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
item 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 4above, and are not listed in this
calibration procedure.
Table 2. Minimum Specifications of Equipment Required
Common Name Minimum use specifications Manufacturer and model (part number)
AUTOTRANSFORMER Range: 105 to 125 V ac General Radio W10MT3AS3
(7910809) or Ridge, Model
9020A (9020A), or Ridge,
Model 9020F (9020F)
FREQUENCY
DIFFERENCE METER Accuracy: <±1.25 parts in 1010 Tracor, Model 527E (527E)
FUNCTION
GENERATOR Function: Sinewave, 50Ω
Frequency: 10 Hz to 10 MHz
Amplitude: 1 to 200 mVp-p
(SG-1288/G)
MULTIMETER Range: -14.95 to +15.05 V dc
Accuracy: ±0.08% John Fluke, Model 8840A/AF
(AN/GSM-64D)
SIGNAL GENERATOR
Frequency: 10 MHz to 18 GHz Amplitude: -50 to –13 dBm Wiltron, Model 68347M
TIME/FREQUENCY
WORKSTATION Frequency: 1 MHz
Accuracy: <±1.0 part in 1011 Autek Systems Corp., Model
620 (MIS-38946)

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5
SECTION III
CALIBRATION PROCESS FOR
FREQUENCY COUNTER HEWLETT-PACKARD, MODEL 5340A
6. Preliminary Instructions
a.The instructions outlined in paragraphs 6and 7are 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 result 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.
d.When indications specified in paragraphs 8through 11 are not within tolerance,
perform the power supply check prior to making adjustments. After adjustments are made,
repeat paragraphs 8through 11.
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
this 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. Remove protective covers from TI as necessary to make adjustments.
b.Set line voltage SELECTOR switch (rear panel) for 115 V ac and verify that correct
fuse (as labeled on rear panel) is installed.
c. Connect TI to autotransformer. Connect autotransformer to 115 V ac power source
and adjust to 115 V ac.
d. Position controls as listed in (1) through (4) below:
(1) RESOLUTION Hz pushbutton to 1.
(2) SAMPLE RATE control fully ccw.
(3) INT-EXT switch (rear panel) to INT.
(4) RANGE switch to 10 Hz -250 MHz.

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6
e. Set LINE switch to ON. If TI has been disconnected from power more than 24
hours, allow at least 24 hours for warmup and stabilization.
8. Time Base Stability -Option 001 Only
a. Performance Check
(1) Connect time/frequency workstation OUTPUT 1 MHz to frequency difference
meter REF INPUT.
(2) Connect TI 10 MHz OUTPUT (rear panel) to frequency difference meter SIG
INPUT.
(3) Adjust FREQ ADJ (fig. 1) for minimum difference indication on frequency
difference meter. Record frequency difference meter indication.
A31R9
A32R6
A28R7
A28TP2
A31TP2
A31TP3
A31R2
A33R8
A33TP1
A17A1R11
A17A1R22
A3R10 FRONT PANEL
OSCILLATOR
A32R3
A32TP2
A32TP1
A29TP2
A29R5
FREQ ADJ
Figure 1. Test instrument -top view.
(4) Allow at least 24 hours for TI time base oscillator to stabilize. Frequency
difference meter indication will be within ±5 parts in 1010 of indication recorded in (3) above.
Record frequency difference meter indication.
(5) Adjust autotransformer output to 105 V ac. Allow 1 minute for oscillator to
stabilize. Frequency difference meter indication will be within ±1 part in 1010 of indication
recorded in (4) above.

TB 9-6625-2021-35
7
(6) Adjust autotransformer output to 125 V ac. Allow 1 minute for oscillator to
stabilize. Frequency difference meter indication will be within ±1 part in 1010 of indication
recorded in (4) above.
(7) Adjust autotransformer output to 115 V ac.
b. Adjustments. No further adjustments can be made.
9. Self-Check
a. Performance Check
(1) Set RANGE switch to CHK and press and release RESET switch. TI display
will initially be all zeros and then 10.000000 MHz ±1 count; the DIR (direct) annunciator
will light and the GATE annunciator should be flashing.
(2) Press RESOLUTION Hz pushbutton to positions listed in table 3. TI display
will be as specified.
Table 3. Self-Check
RESOLUTION Hz
pushbutton positions Display ±1 count
10 Hz 10.00000MHz
100 Hz 10.0000 MHz
1kHz 10.000 MHz
10 kHz 10.00 MHz
100 kHz 10.0 MHz
1MHz .010 GHz
b. Adjustments. No adjustments can be made.
10. 10 Hz to 250 MHz Frequency and 1 MΩΩ Input Sensitivity Check
a. Performance Check
(1) Press RESOLUTION Hz pushbutton to 10, adjust SAMPLE RATE control to
midposition, and set RANGE switch to 10 Hz-250 MHz.
NOTE
Throughout the remainder of this check, press RESOLUTION
Hz pushbuttons as necessary.
(2) Connect function generator Function Outputs Unbalanced to TI INPUT
1 MΩΩ using a 50Ωfeedthrough termination.
(3) Set function generator for a sinewave, 10 Hz, 1 mVp-p, 50Ωoutput. Slowly
increase function generator amplitude until TI displays a stable indication of applied frequency.
If function generator amplitude exceeds 141 mVp-p, perform b below.

TB 9-6625-2021-35
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(4) Set function generator amplitude to 141 mVp-p. Adjust function generator
frequency from 10 Hz to 10 MHz. If TI does not display a stable indication of applied
frequency, perform bbelow.
(5) Disconnect function generator and 50Ωfeedthrough termination from TI.
(6) Connect signal generator RF Output to TI INPUT 1 MΩΩ using a 50Ω
feedthrough termination.
(7) Set signal generator frequency to 10 MHz and level output to –50 dBm. Slowly
increase signal generator level output until TI displays a stable indication of applied frequency.
If signal generator level output exceeds –13 dBm, perform bbelow.
(8) Set signal generator level output to –13 dBm. Adjust signal generator
frequency from 10 to 250 MHz. If TI does not display a stable indication of applied
frequency, perform bbelow.
b. Adjustments
(1) Connect signal generator RF Output to TI INPUT 1 MΩΩ using a 50Ω
feedthrough termination.
(2) Set signal generator frequency to 100 MHz and level output to –13 dBm.
(3) Press RESOLUTION Hz pushbutton to 100 and adjust A3R10 (fig. 1) until a
stable count is displayed (R).
11. 10 Hz to 18 GHz Frequency and 50ΩΩ Input Sensitivity Check
a. Performance Check
CAUTION
Do not exceed 1 W of power to 50Ωinput, otherwise extensive
damage will occur to the test instrument.
(1) Connect function generator Function Outputs Unbalanced to TI INPUT
50ΩΩ.
(2) Set RANGE switch to 10 Hz -18 GHz and press RESOLUTION Hz
pushbutton to 10.NOTE
Throughout the remainder of this check, press RESOLUTION
Hz pushbuttons as necessary.
(3) Set function generator for a sinewave, 10 Hz, 20 mVp-p, 50Ωoutput. If TI does
not display a stable indication of applied frequency, perform bbelow.
(4) Adjust function generator frequency from 10 Hz to 10 MHz. If TI does not
display a stable indication of applied frequency, perform bbelow.
(5) Disconnect function generator from TI.
(6) Connect signal generator RF Output to TI INPUT 50ΩΩ.

TB 9-6625-2021-35
9
(7) Set signal generator frequency to 10 MHz and level output to -30 dBm. If TI
does not display a stable indication of applied frequency, perform bbelow.
(8) Adjust signal generator frequency from 10 to 500 MHz. If TI does not display a
stable indication of applied frequency, perform bbelow.
(9) Set signal generator frequency to 500 MHz and level output to -35 dBm. If TI
does not display a stable indication of applied frequency, perform b below.
(10) Adjust signal generator frequency from 500 MHz to 10 GHz. If TI does not
display a stable indication of applied frequency, perform bbelow.
(11) Set signal generator frequency to 10 GHz and level output to -25 dBm. If TI
does not display a stable indication of applied frequency, perform bbelow.
(12) Adjust signal generator frequency from 10 to 18 GHz. If TI does display a stable
indication of applied frequency, perform bbelow.
(13) Set RANGE switch to 250 MHz -18 GHz.
(14) Set signal generator frequency to 250 MHz and level output to -30 dBm. TI will
display a stable indication of applied frequency.
(15) Adjust signal generator frequency from 250 to 500 MHz. TI will display a stable
indication of applied frequency.
(16) Set signal generator frequency to 500 MHz and level output to -35 dBm. TI will
display a stable indication of applied frequency.
(17) Adjust signal generator frequency from 500 MHz to 10 GHz. TI will display a
stable indication of applied frequency.
(18) Set signal generator frequency to 10 GHz and level output to -25 dBm. TI will
display a stable indication of applied frequency.
(19) Adjust signal generator frequency from 10 GHz to 18 GHz. TI will display a
stable indication of applied frequency.
b. Adjustments
(1) Connect signal generator RF Output to TI INPUT 50ΩΩ.
(2) Set signal generator frequency to 100 MHz and level output to -25 dBm.
(3) Adjust A17A1R22 (fig. 1) fully ccw.
(4) Adjust A17A1R11 (fig. 1) for a stable indication on TI.
(5) Decrease signal generator level output and adjust A17A1R11 (fig. 1) until
maximum sensitivity is obtained (R).
(6) Increase signal generator level output for a stable indication. Record signal
generator level output indication.
(7) Adjust A17A1R22 (fig. 1) fully cw. TI will display all zeros.

TB 9-6625-2021-35
10
(8) Increase signal generator level output by 1 dB from level recorded in (6) above
and adjust A17A1R22 (fig. 1) ccw until TI display indicates 100 MHz (R).
(9) Verify that sensitivity is at least -32 dBm.
12. Power Supply
NOTE
Do not perform power supply check if all other parameters are
within tolerance.
a. Performance Check. Connect multimeter between test points listed in table 4
and chassis ground. If multimeter does not indicate within limits specified, perform
corresponding adjustments in table 4.
Table 4. Power Supply Voltages
Test instrument test
points
Multimeter indications
(V) Adjustments (R)
(fig. 1) Min Max (fig. 1)
A28TP2 −14.95 −15.05 A28R7
A29TP2 +14.95 +15.05 A29R5
A31TP2 −4.95 −5.05 A31R9
A31TP3 −4.95 −5.05 A31R2
A32TP1 +4.95 +5.05 A32R6
A32TP2 +4.95 +5.05 A32R3
A33TP11+10.95 +11.05 A33R8
1Option 001 only.
b. Adjustments. No further adjustments can be made.
13. Final Procedure
a. Deenergize and disconnect all equipment.
b. Annotate and affix DA label/form in accordance with TB 750-25.

TB 9-6625-2021-35
11
SECTION IV
CALIBRATION PROCESS FOR
MICROWAVE FREQUENCY COUNTER
TD-1225A(V)1/U (HEWLETT-PACKARD, MODEL 5342A/H14),
TD-1225A(V)2/U (HEWLETT-PACKARD, MODEL 5342A/H16), AND
HEWLETT-PACKARD, MODELS 5342A AND 5343A
14. Preliminary Instructions
a.The instructions outlined in paragraphs 14 and 15 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 result 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.
d. When indications specified in paragraphs 16 through 19 are not within tolerance,
perform the power supply check prior to making adjustments. After adjustments are made,
repeat paragraphs 16 through 19.
e. Unless otherwise specified, all controls and control settings refer to the TI.
15. Equipment Setup
WARNING
HIGH VOLTAGE is used or exposed during the performance of
this 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.Remove protective cover from TI only for access to adjustments or test points.
NOTE
When FREQ STD OUT on rear of TI is not being used, the
connector must be terminated with 50Ωfeedthrough
termination supplied with TI.
b.Assure that LINE VOLTAGE SELECTOR switch (rear panel) is set for 115 V ac
and verify that correct fuse (as labeled on rear panel) is installed.
c.Connect TI to autotransformer and connect autotransformer to a 115 V ac source
and adjust for 115 V ac output.
d. Position controls as listed in (1) through (7) below.

TB 9-6625-2021-35
12
(1) INT/EXT switch (rear panel) to INT.
(2) CW/FM switch (rear panel) to CW (model 5342A only).
(3) ACQ TIME/FAST, MED, SLOW switch (rear panel) to MED (model 5343A
only).
(4) SAMPLE RATE control fully ccw.
(5) Frequency range switch 10 Hz -500 MHz/500 MHz -18 GHz (10 Hz -500
MHz/500 MHz -26.5 GHz for model 5343A) to 10 Hz -500 MHz.
(6) 50ΩΩ -1 MΩΩ switch to 50ΩΩ.
(7) STBY/LINE/ON switch to ON.
NOTE
If TI has been disconnected from line source for more than 24
hours, allow at least 24 hours for warmup and stabilization.
16. Time Base Stability (Option 001, H14, H16, Time Base 10544A and Model
5343A)
a. Performance Check
(1) Connect time/frequency workstation OUTPUT 1 MHz to frequency difference
meter REF INPUT.
(2) Connect TI 10 MHz OUTPUT (rear panel) to frequency difference meter SIG
INPUT.
(3) Adjust FREQ ADJ (fig. 2) for minimum difference indication on frequency
difference meter. Record frequency difference meter indication.
Figure 2. TD-1225A(V)1/U (Hewlett-Packard, Model 5342A/H14), TD-1225A(V)2/U
(Hewlett-Packard, Model 5342A/H16), and Hewlett-Packard, Model 5343A -top view.

TB 9-6625-2021-35
13
(4) Allow at least 24 hours for TI time base oscillator to stabilize. Frequency
difference meter indication will be within ±5 parts in 1010 of indication recorded in (3)
above. Record frequency difference meter indication.
(5) Adjust autotransformer output to 105 V ac. Allow 1 minute for oscillator to
stabilize. Frequency difference meter indication will be within ±1 part in 1010 of indication
recorded in (4) above.
(6) Adjust autotransformer output to 125 V ac. Allow 1 minute for oscillator to
stabilize. Frequency difference meter indication will be within ±1 part in 1010 of indication
action recorded in (4) above.
(7) Adjust autotransformer output to 115 V ac.
b. Adjustments. No further adjustments can be made.
17. Self-Check
a. Performance Check
(1) Press FREQ SHIFT (blue) and RESOLUTION CHECK pushbuttons. Verify
that TI displays 75.000000 MHz ±1 count.
(2) Press RESET pushbutton.
(3) Remove 50Ωtermination from FREQ STD OUT (rear panel) and connect
FREQ STD OUT to TI front panel BNC input connector.
(4) Press FREQ SHIFT (blue) and RESOLUTION 1 Hz pushbuttons. Verify that
TI displays 10.000000 MHz ±1 count.
(5) Press RESET pushbutton and reconnect 50Ωtermination to FREQ STD OUT
connector (rear panel).
b. Adjustments. No adjustments can be made.
18. Frequency and Sensitivity Check -10 Hz to 520 MHz
a. Performance Check
CAUTION
The 10 Hz to 500 MHz direct count input BNC connector is
fuse-protected for a maximum input level of 3.5 V rms (+24
dBm)
(1) Press FREQ SHIFT (blue) and RESOLUTION 1 Hz pushbutton.
(2) Connect function generator Function Outputs Unbalanced to TI front panel
BNC input.
(3) Set function generator for a sinewave, 10 Hz, 1 mVp-p, 50Ωoutput. Slowly
increase function generator amplitude until TI displays a stable indication of applied frequency.
If function generator amplitude exceeds 71 mVp-p, perform bbelow.

TB 9-6625-2021-35
14
(4) Set function generator amplitude to 71 mVp-p.
(5) Adjust function generator frequency from 10 Hz to 10 MHz. If TI does not
display a stable indication of applied frequency, perform b below.
(6) Disconnect function generator from TI.
(7) Connect signal generator RF Output to TI front panel BNC input.
(8) Set signal generator frequency to 10 MHz and level output to -19 dBm. TI will
indicate a stable indication of applied frequency.
(9) Adjust signal generator frequency from 10 MHz to 520 MHz. TI will display a
stable indication of applied frequency.
(10) Disconnect signal generator from TI.
(11) Set TI 50ΩΩ -1 MΩΩ switch to 1 MΩΩ.
(12) Connect function generator Function Outputs Unbalanced to TI front panel
BNC input using a 50Ωfeedthrough termination.
(13) Set function generator frequency to 10 Hz and amplitude to 1 mVp-p. Slowly
increase function generator amplitude until TI displays a stable indication of applied
frequency. Function generator amplitude will not exceed 141 mVp-p.
(14) Set function generator amplitude to 141 mVp-p.
(15) Adjust function generator frequency from 10 Hz to 10 MHz. TI will display a
stable indication of applied frequency.
(16) Disconnect function generator and 50Ωfeedthrough termination from TI.
(17) Connect signal generator RF Output to TI front panel BNC input using a 50Ω
feedthrough termination.
(18) Set signal generator frequency to 10 MHz and level output to -13 dBm. TI will
display a stable indication of applied frequency.
(19) Adjust signal generator frequency from 10 to 25 MHz. TI will display a stable
indication of applied frequency.
b. Adjustments
(1) Set function generator frequency to 1 MHz and amplitude to 200 mVp-p.
(3) Decrease function generator amplitude while adjusting A3R8 (fig. 2) to a point
where TI no longer counts (R).
(4) Verify that sensitivity is at least 35 mVp-p.

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15
19. Frequency and Sensitivity Check -500 MHz to 18 GHz
a. Performance Check
CAUTION
Do not exceed +25 dBm peak of input power at the N type
connector (500 MHz to 18 GHz), SMA connector for model
5343A. Damage to the internal sampler may result.
NOTE
When the input signal level to the high frequency input
connector exceeds approximately +5 dBm, each digit in the
display becomes a minus sign (-) to indicate overload.
(1) Connect signal generator RF Output to TI N type input. (Use APC 3.5 male
connector with collar for model 5343A).
(2) Set 10 Hz -500 MHz/500 MHz -18 GHz (10 Hz -500 MHz/500 MHz -26.5
GHz for model 5343A) switch to 500 MHz -18 GHz (500 MHz -26.5 GHz for model
5343A).
(3) Press FREQ SHIFT (blue) and RESOLUTION 1 Hz pushbuttons.
(4) Set signal generator frequency to 500 MHz and level output to -25 dBm (-33 dBm for
model 5343A). TI will display a stable indication of applied frequency.
(5) Adjust signal generator frequency from 500 MHz to 12.4 GHz. TI will display a
stable indication of applied frequency.
(6) Set signal generator frequency to 12.4 GHz and level output to -20 dBm (-28 dBm for
model 5343A). TI will display a stable indication of the applied frequency.
(7) Adjust signal generator frequency from 12.4 to 18 GHz. TI will display a stable
indication of applied frequency.
b. Adjustments. No adjustments can be made.
20. Power Supply
NOTE
Do not perform power supply check if all other parameters are
within tolerance.
a. Performance Check. Connect multimeter HI to -5.2 V TEST POINT (fig. 3) and
LO to chassis ground. If multimeter does not indicate between -5.1 and -5.25 V dc, perform
bbelow.

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16
-5.2V TEST POINT FRONT
PANEL
Figure 3. TD-1225A(V)1/U (Hewlett-Packard, Model 5342A/H14), TD-1225A(V)2/U (Hewlett-Packard,
Model 5342A/H16) and Hewlett-Packard, Model 5343A -bottom view.
b. Adjustments. Adjust A21R17 (fig. 2) for -5.2 V dc indication on multimeter (R).
21. Final Procedure
a.Deenergize and disconnect all equipment.
b. Annotate and affix DA label/form in accordance with TB 750-25.

Official:
ERIC K. SHINSEKI
General, United States Army
Chief of Staff
JOEL B. HUDSON
Administrative Assistant to the
Secretary of the Army
TB 9-6625-2021-35
0015704
DISTRIBUTION:
To be distributed in accordance with IDN 342184, requirements for calibration procedure
By Order of the Secretary of the Army:
TB 9-6625-2021-35.
PIN: 048292-000