HP 5308A Service manual

OPERATING AND SERVICE MANUAL
15 MHz
TIMER/COUNTER
5308A
ET PACKARD

CERTIFICATION
Hewlett-Packard Company certifies that this instrument met its published specifications
at the time of shipment from the factory. Hewlett-Packard Company further certifies that
its calibration measurements are traceable to the United States National Bureau of
Standards, to the extent allowed by the Bureau's calibration facility, and to the calibration
facilities of other International Standards Organization members.
WARRANTY AND ASSISTANCE
This Hewlett-Packard product is warranted against defects in materials and workmanship
for a period of one year from the date of shipment. Hewlett-Packard will, at its option,
repair or replace products which prove to be defective during the warranty period pro-
vided they are returned to Hewlett-Packard, and provided the preventive maintenance
procedures in this manual are followed. Repairs necessitated by misuse of the product
are not covered by this warranty. NO OTHER WARRANTIES ARE EXPRESSED OR
IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. HEWLETT-
PACKARD IS NOT LIABLE FOR CONSEQUENTIAL DAMAGES.
if this product is sold as part of a Hewlett-Packard integrated instrument system, the
above warranty shall not be applicable, and this product shall be covered only by the
system warranty.
Service contracts or customer assistance agreements are available for Hewlett-Packard
products.
For any assistance, contact your nearest Hewlett-Packard Sales and Service Office.
Addresses are provided at the back of this manual.
019000-4-234

SECTION IX H
73 MHz TIMER/COUNTER
5308A
OPERATING AND SERVICE MANUAL
SERIAL PREFIX: 1528A
This section applies directly to Model 5308A 75 MHz
Timer/Counters having Serial Prefix 1528A. The sec-
tion is provided in loose-ieaf form for incorporation
into the 5300B Measuring System Manual.
NEWER INSTRUMENTS
This section with enclosed “Manual Changes” sheet
applies directly to HP Model 5308A 75 MHz Timer/
Counters having Serial Prefix numbers above 1528A.
OLDER INSTRUMENTS
Subsection VII of this document contains information
pertinent to all older instruments with Serial Prefix
1440A or 1524A.
Copyright HEWLETT-PACKARD COMPANY 1975
5301 STEVENS CREEK BLVD., SANTA CLARA, CALIF. 95050
Printed: JAN 1976
MANUAL PART NO. 05308-90005
MICROFICHE PART NO. 05308-90006
PRINTED IN U.S.A.
HEWLETT ’ PACKARD

Model 5308A
General Information
SECTION IX H
5308A 75 MHz TIMER/COUNTER
SUBSECTION |
GENERAL INFORMATION
9H-1-1. PURPOSE AND USE OF SECTION IX H
9H-1-2. Section IX H contains the information neces-
sary to install, operate, and maintain the HP 53084.
Timer/Counter. Theory of operation, parts lists, com-
ponent locator illustrations, and a schematic diagram
are included. Insert this document in the HP 5300B
Measuring System manual as part of Section IX.
9H-1-3. INSTRUMENT DESCRIPTION
9H-1-4. When plugged onto a 5300B mainframe, the
5308A can measure frequency, frequency ratio,
period, period average, time interval, and time interval
average. A single-channel or a two-channel totalize
function is provided. The two-channel function
totalizes pulses on Channel A during pulses on Chan-
nel B or between pulses on Channel B.
9H-1-5. Front panel controls are provided for func-
tion and time base selection and for signal condition-
ing (slope, level, and attenuation). Automatic
selection of maximum resolution is provided for the
four functions of frequency, frequency ratio, period
average, and time interval average measurements.
Trigger indicator lamps are provided to indicate when
internal amplifier triggering occurs.
9H-1-6. Rear panel connectors provide a gate
output for Z axis modulation of an oscilloscope, trig-
ger level outputs for monitoring the voltage level at
which each channel triggers, and a time base cutput
for use in totalizing, period, and time interval
measurements.
9H-1-7. The electrical and mechanical specifications
are listed in Table 9H-1-1.
9H-1-8. INSTRUMENT IDENTIFICATION
9H-1-9. Hewlett-Packard uses a two-section, nine-
digit serial number (0000A00000) mounted on the
rear panel to identify the instrument. The first four
digits are the serial prefix and the last five digits refer
to the specific instrument. If the serial prefix on your
instrument differs from that listed on the title page
of this section, there are differences between the
manual and your instrument. Lower serial prefixes
are covered by a manual change sheet included with
the manual.
Figure 9H-1--1. 5308A 75 MHz Timer/Counter
9H-1-1

Model 5308A
General Information
9H-1-10. The printed circuit board within the instru-
ment is identified by a two-section, 10-digit part
number (e.g., 05308-60001) and a four-digit series
number (e.g., “SERIES 1440A”). The series number
identifies the electrical characteristics of the com-
plete printed-circuit assembly. A replacement circuit-
board assembly may have a different series number
than the assembly originally supplied with the instru-
ment. Therefore, when troubleshooting a circuit-
board assembly, ensure that the series number on the
schematic diagram matches the series number on the
board assembly. If the series number on the assembly
is lower than the number on the schematic diagram in
Subsection VIII, refer to Subsection VII of this docu-
ment for change information. If the series number on
the assembly is higher than the number on the sche-
9H-1-2
matic diagram in Subsection VIII, the change infor-
mation
is
provided
in
a
manual
change
sheet
which
is.
`
available from the nearest Hewlett-Packard Sales
and Service Office,
9H-1-11. Manual Changes and Options
9H-1-12. The title page lists the serial prefix number
to which this manual directly applies. If the serial
prefix is different from the one listed, a change sheet
is included describing the required changes. If this
change sheet is missing, the information can be sup-
plied by any Hewlett-Packard Sales and Service office
listed in Section VIII of the 5300B Measuring System
manual. Options are listed in Section IX H, Sub-
section VII.

Model 5308A
General information
Table 9H-1-1. Specifications
INPUT CHANNELS A AND B
RANGE: DC Coupled; 0 to 75 MHz
AC Coupled; 20 Hz to 75 MHz
SENSITIVITY: (Min) 25 mV rms sine wave to 10
MHz. 50 mV rms sine wave to 75 MHz. 150
mV p-p pulse at minimum pulse width of 10
ns. Input must be less than 1V rms from 50 to
75 MHz with Attenuator switch in X1 position.
Sensitivity can be decreased by 10 using
Attenuator switch.
IMPEDANCE: 1 MO shunted by less than 48 pF.
OVERLOAD PROTECTION: +
DC Range:
Xl: DC to 400 kHz 125V rms
400 kHz to 5 MHz Vrms = (5x107)+(Hz)
5 MHz to 75 MHz 10V rms
X10: DC to 4 MHz 250V rms
4 MHz to 75 MHz Vrms = (1x10°)+(Hz)
| AC Ranges:
DC to 10 Hz 200V peak in addition to
above ratings.
TRIGGER LEVEL: Set position centers triggering at
O volts, or continuously variable over the
range of 22.0 V with Attenuator in X1 position
or +20V with Attenuator in X10 position. Trig-
ger level available on rear panel BNC con-
nectors for DVM monitoring.
SLOPE: Independent selection of triggering on
positive or negative slope.
CHANNEL INPUTS: Separate or Common B
GATE OUTPUT: Rear panel BNC. TTL low level
while gate is open may be used to intensity
modulate an HP oscilloscope.
TIME BASE/SCALING OUTPUT: Available at rear
panel BNC.
FREQUENCY
RANGE: 0 to 75 MHz, Channel A or Channel B.
GATE TIMES: 8 manually selectable times from 1
us to 10 seconds. AUTO position selects gate
time for maximum resolution within a 1.1
second measurement time.
ACCURACY: +1 count + time base accuracy.
DISPLAY: Hz, kHz, and MHz with positioned deci-
mal point.
FREQUENCY RATIO
DISPLAY: Fa/Fb, measured over N periods of Fb.
N=1 to 10%, selectable in decade steps with
automatic decimal position and annunciators.
AUTO position selects N automatically for
maximum resolution within a 1.1 second
measurement time.
RANGE: Channel A; 0 to 75 MHz. Channel B; 0 to
5 MHz.
ACCURACY: +1 count of Fa + trigger error of Fb*. `
PERIOD
RANGE: 0 Hz to 5 MHz, Channel B-
RESOLUTION: 100 ns to 10 s in decade steps.
ACCURACY: +1 count + time base accuracy + trig-
ger error*.
DISPLAY: us, ors with positioned decimal point.
PERIOD AVERAGE
RANGE: 0 to 5 MHz; (100 ns to 10 s), Channel B.
PERIODS AVERAGED: 1 to 10% manually selectable
in decade steps. AUTO position automati-
cally selects number of periods for maximum
resolution within a 1.1 second measurement
time.
FREQUENCY COUNTED: 10 MHz.
ACCURACY: +1 count + time base accuracy + trig-
ger error*,
DISPLAY: mus (ns), us, with positioned decimal
points. (In the 108 position of the TIME BASE
switch, the display will be ps with no
annunciator shown.)
TIME INTERVAL
RANGE: 200 ns to 10° s. 25 ms minimum pulse
width. Separate or Common B.
RESOLUTION: 100 ns to 10 s in decade steps.
ACCURACY: +1 count-+ time base accuracy + trig-
ger error’,
DISPLAY: us, s, or ks with positioned decimal point.
TIME INTERVAL AVERAGE
RANGE: 1 ns to 10 s. 200 ns dead time between
intervals. Channels A and B separate or Com-
mon B.
INTERVALS AVERAGED: 1 to 108 selectable in de-
cade steps. AUTO position selects number
of intervals to give maximum resolution with-
in a measurement time of 1.1 second.
DISPLAY: mus (ns), us, or s with positioned deci-
mal point. (In the 108 position of the TIME
BASE switch, the display will be in ps with
no annunciator shown.)
ACCURACY: + time base accuracy £5 ns
+ [Trigger Error* + 100 ns]
Y Intervals Averaged
TOTALIZE
Totalizes Channel A during pulses on Channel B.
Totalizes Channel A between pulses on Channel B.
RANGE: 75 MHz on Channel A in position 1 of
TIME BASE switch, 5 MHz in other
positions of TIME BASE switch.
ACCURACY: +1 count + trigger error on Channel B*.
DISPLAY: Displays count. Can scale display with
annunciator by use of TIME BASE switch to
increase count capacity.
GENERAL
NOTE: 5308A is compatible with 8 digit 5300B
mainframe only.
CHECK: Inserts internal 10 MHz reference fre-
quency into counting decades. Displays 10
counts for TIME BASE switch positions 10
through 108 with proper decimal position and
annunciator.
OPERATING TEMPERATURE: 0° to 50°C.
POWER REQUIREMENTS: Including 5300B main-
frame, nominally 15 watts.
WEIGHT: Net, 0.9 kg (2 Ib). Shipping, 1.5 kg (3% Ib),
DIMENSIONS: With mainframe 89 mm H 3%”) x
760 mm W (6547) x 248 mm L (9%”).
+SEE WARNING ON PAGE 9H-3-11.
*For any waveshape, trigger error (us) is less than +
0.005
For period average, this is less than +0.3% of one
period + periods averaged for signals with 40 dB or
better signal-to-noise ratio.
9H-1-3

TEE

Model 5308A
Installation
SECTION IX H
5308A 75 MHz TIMER/COUNTER
SUBSECTION Il
INSTALLATION
9H-2-1. INTRODUCTION
9H-2-2. This section contains information on unpack-
ing and inspection, storage and shipment, installation
and removal of plug-on, and portable operation.
9H-2-3. UNPACKING AND INSPECTION
9H-2-4. If the shipping carton is damaged, ask that
the carrier’s agent be present when the instrument is
unpacked. Inpsect the instrument for damage such as
scratches, dents, broken knobs, etc. If the instrument
is damaged or fails to meet performance tests when
used with the 5300B mainframe, notify the carrier
and the nearest Hewlett-Packard Sales and Service
Office immediately. Performance check procedures
are located in Subsection V, and Sales and Service
Offices are listed in Section VI of the 5300B portion of
the manual. Retain the shipping carton and the pad-
ding material for the carrier’s inspection. The Sales
and Service Office will arrange for the repair or re-
placement of the instrument without waiting for the
claim against the carrier to be settled.
9H-2-5. STORAGE AND SHIPMENT
9H-2-6. PACKAGING. To protect valuable elec-
tronic equipment during storage or shipment, always
use the best packaging methods available. Your
Hewlett-Packard Sales and Service Office can pro-
vide packaging material such as that used for original
factory packaging. Contract packaging companies
in many cities can provide dependable custom pack-
aging on short notice. The unit was originally pack-
aged as follows:
The original container is a corrugated cardboard
box with 200 Ibs. burst test (HP 9211-1620). The
instrument is secured and protected in the box by
a top and bottom molded frame of polystyrene
foam (HP No. 9220-1545).
9H-2-7, ENVIRONMENT. Conditions during stor-
age and shipment should normally be limited as
follows:
a. Maximum altitude: 25,000 feet.
b. Minimum temperature: -40°F (-40°C).
c. Maximum temperature: +167°F (+75°C).
9H-2-8. INSTALLATION AND REMOVAL OF
PLUG-ON
9H-2-9. The counter must be used with a 5300B main-
frame to make measurements. Mate the counter and
the mainframe according to the instructions given in
Paragraph 2-11 and Figure 2-1 in the 5300B main-
frame documentation.
9H-2-10. PORTABLE OPERATION
9H-2-11. Use of the HP Model 5310A Battery Pack
enables the 5300B mainframe and the counter to be
used in areas removed from ac power sources. The
battery pack provides a minimum of 3 hours oper-
ation (typically 5 hours) at 20° to 30°C operating and
charging temperature. Tables 1-2 and 1-4 of the
5300B portion of the manual lists the battery pack as
an available accessory. Documentation for the
battery pack is also included in Section IV through
VIII of the 5300B portion of the manual. To prepare
the 5300B/5308A for portable operation, refer to
Paragraph 2-13 and Figure 2-2, of the 5300B portion
of the manual.
9H-2-1

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