HP 81130A User manual

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HP 81130A/’31A Performance Test
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Use the tests in this chapter if you want to check that the HP
81130A Pulse Generator Frame with the HP 81131A 400 MHz
Output Channel(s) is working correctly. Before starting any test-
ing allow all test equipment to warm up for at least 30 minutes.
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When referring to actions that you perform during the tests, the
following conventions are used:
FUNCTION This indicates that a labelled button must be pressed
[[02'(75*] This shows that a soft-key must be pressed. A soft-
key is an unlabelled button whose label is shown on the display,
and which can vary according to the job that the button is doing
&217,1828638/6(6This is an option shown on the dis-
play, and is selected by use of the vernier keys. It is shown in
upper or lower case to match the case displayed.
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Tables for entering the results of the tests are included at the end
of this chapter. The tests are numbered and reference numbers for
each Test Result (TR) are given in a small table at the end of each
test. The reference number shows you where the actual results
should be entered in the Test Results Tables.
The Test Results tables at the end of the chapter should be photo-
copied, and the Test Results entered on the copies. Then, if the
tests need to be repeated, the tables can be copied again.
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HP 81130A/’31A Performance Test
If Channel 2 has been fitted to your instrument, make an extra
copy of the Test Results tables for entry of the results of tests on
that channel. In this case, however, it is not necessary to repeat the
Period tests, as these are common to both channels.
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HP 81130A/’31A Performance Test
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The following tables list the recommended test equipment you
need to perform all the tests in this chapter. You can use alternative
instruments if they meet the critical specifications given. The test
set-ups and procedures assume you are using the recommended
equipment.
Test Equipment Model Critical Specifications
Oscilloscope
or HP 54121T 20 GHz, 10 bit vertical resolution, Histogram
Oscilloscope HP 54750A +
HP 54751A 20 GHz, 15 bit vertical resolution, Histogram
Counter
or
HP 53132A
#001/010, 030 Frequency measurements > 150 MHz High-Stability Timebase, 3 GHz Channel
Counter HP 5334B
#010, 030 Period and Time Interval measurements Oven Osci, 1.3 GHz C-Channel
Digital Voltmeter HP 3458A DCV up to 20 V
Delay line HP 54008A 22 ns
Accessories Model Critical Specifications
Digitizing Oscilloscopes Accessories
Attenuators
Power Splitter
SMA/SMA (m-m) adaptor
SMA (f)/BNC (m) Adaptor
SMA (m)/BNC (f) Adaptor
SMA Cable
HP 33340C#020
HP 33340C#006
HP 11667B
1250-1159
1250-1700
1250-1200
8120-4948
20 dB
6 dB
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HP 81130A/’31A Performance Test
127( When you connect the test equipment for the first time, and
whenever you change the setup during the course of these tests,
use the 8710 - 1582 torque wrench to tighten and loosen SMA
connectors. This will ensure that the connectors are at the correct
tightness and give the best signal transfer.
50 Ω Feedthrough Termination HP 10100C
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2 W,1%
10 W,0.1%
Adaptor 1251-2277 BNC to Banana
Cable Assemblies, BNC 8120-1839
Torque Wrench 8710-1582 5/16 in, 5 lb-in (56 Ncm)
Accessories Model Critical Specifications
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HP 81130A/’31A Performance Test
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The following figure provides a schematic and a parts list except
for the case. The case must provide shielding and maintain
grounding integrity.
50 Ohm, 0.1%, 10 W Feedthrough Termination
The following parts are required:
1. R1 = 53.6Ω, 1%, 10 W; HP Part Number: 0699-0146.
2. R2 = 200 Ω, 10%, 0.5 W, Variable trimmer; HP Part Number:
100-3350.
3. R3 = 681 Ω;, 1%, 0.5 W; HP Part Number: 0757-0816.
4. BNC (M): HP Part Number: 1250-0045.
5. BNC (F): HP Part Number: 1250-0083.
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HP 81130A/’31A Performance Test
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The HP 81130A is controlled by selecting options in a series of
SDJHV that are displayed on the instrument’s screen. These options
vary with the boards that are fitted in the instrument. When the HP
81130A is being tested, therefore, different situations can arise,
depending on whether you have a standard instrument or one that
has had additional boards fitted. The following examples illustrate
this
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The OUTPUT Screen in a Standard HP 81130A
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HP 81130A/’31A Performance Test
The TIMING Screen in an HP 81130A with qty 2 of HP 81131A
The LEVELS Screen in an HP 81130A with qty 2 of HP 81131A
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HP 81130A/’31A Performance Test
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You will need to write the serial numbers of the instrument at the
top of the Test Reports. These can be found as follows:
Press HELP, [6(5,$/]
The HP 81130A display lists the instrument’s products and serial
number.
The display on your instrument should look similar to this:
The serial number given for the )5$0( applies to the Mainframe,
the Power Supply, the Microprocessor Board, and the Timing
Board. The number(s) available of the Output Channel(s) applies
to the installed numbers of outputs and Model Number.
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HP 81130A/’31A Performance Test
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In the majority of these tests the initial setting up of the instrument
is identical. Therefore, it is described once here, and then referred-
to where appropriate. In cases where the initial setup differs, an
illustration of the settings is shown.
Set up the HP 81130A as follows:
1. Select [02'(75*]
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2. Select [287387], if second channel is installed
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3. Select MORE [&21),*] screen and set up as follows.
If a second output channel is installed select grouped by OUT-
PUT 1 / 2
CONFIG Screen, Parameters grouped by OUTPUT
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HP 81130A/’31A Performance Test
127( Set-upsare given in all the tests for [287387] and [287387@.
If you are testing a single channel instrument set up the
[287387] screen with the settings given for [287387].
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HP 81130A/’31A Performance Test
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Range 170 kHz to 400 MHz
Resolution 4 digits, best case 2 ps
Accuracy +0.01%
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Counter HP 53132A
Cable, 50 Ω, coaxial, BNC; SMA/BNC Adaptor
127( The HP 53132A counter is used in frequency mode to meet the
MIL CAL A uncertainty requirements for TAR (Test Accuracy
Ratio) > 4:1.
3URFHGXUH Connect the HP 81130A to the counter as follows:
Connecting HP 81130A to the Counter
4. Set up the HP 81130A as described in "Initial Setup of the HP
81130A"
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TRIG OUT
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CHANNEL 1 2
3
BNC Cable
SMA/BNC
Adaptor
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HP 81130A/’31A Performance Test
5. Select the [02'(75*] screen on the HP 81130A and set up as
follows:
The MODE/TRG Screen Setup
6. On the HP 81130A set up [287387] and [287387] pages
as follows:
Configuring Output 1
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HP 81130A/’31A Performance Test
Configuring Output 2
127( When you are testing instruments with 2 output channels it is
necessary to:
a. Configure ERWK channels.
b. You can switch OFF the channels that are not being tested.
7. Set the Counter to measure the frequency at the choosen input
1 / 3
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HP 81130A/’31A Performance Test
8. Check the HP 81130A frequency at the following settings:
Period Frequency Acceptable Range TR Entry
2.500 ns
10.00 ns
50.00 ns
100 ns
500 ns
1 µs
5.882 µs
400.000MHz
100 MHz
20 MHz
10 MHz
2 MHz
1 MHz
170.0 kHz
399.9600 MHz to 400.0400 MHz
99.990 MHz to 100.010 MHz
19.9980 MHz to 20.0020 MHz
9.9990 MHz to 10.0010 MHz
1.9998 MHz to 2.0002 MHz
999.9 kHz to 1.0001 MHz
169.983 kHz to 170.017 kHz
1 - 1
1 - 2
1 - 3
1 - 4
1 - 5
1 - 6
1 - 7
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HP 81130A/’31A Performance Test
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Range 1.25 ns to (period - 1.25 ns)
Resolution 4 digits, best case 2 ps
Accuracy +0.01% +200 ps
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Digitizing Oscilloscope with Accessories
Counter
Cable, 50 Ω, coaxial, BNC; SMA/BNC Adaptor
3URFHGXUH 1. Connect HP 81130A to the Scope as shown:
Connecting HP 81130A to the Scope
2. Set up the HP 81130A as described in "Initial Setup of the HP
81130A"
20 dB
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HP 81130A/’31A Performance Test
3. On the HP 81130A press MORE and set up [287387] and
[287387] pages as shown in the following illustrations:
Configuring Output Screen 1
Configuring Output Screen 2
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HP 81130A/’31A Performance Test
127( When you are testing instruments with 2 output channels it is
necessary to:
a. Configure ERWK channels.
b. Switch OFF the channel that is not being tested
If you then test the other channel:
c. Switch ON the channel you are testing, and switch OFF the
other channel.
4. Set the Digitizing Oscilloscope HP 54121T:
• Press AUTOSCALE
• Select the Display menu and set the Number of Averages to 32
• Select the delta V menu and turn the voltage markers On
• Set the preset levels to 50% -50% and press AUTO LEVEL SET
• Select the delta t menu and turn the time markers ON
• Set START ON EDGE = POS 1 and STOP ON EDGE = NEG1
5. Change the oscilloscope timebase to 1 ns/div
6. Change the HP 81130A Ch-1 Width to 1.250 ns
7. Center the pulse in the Scope display
8. Press the PRECISE EDGE FIND key for each new Width set-
ting
9. Check the HP 81130A pulse width at the following settings:
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HP 81130A/’31A Performance Test
10. Connect the HP 81130A to the Counter as shown:
Connecting HP 81130A to the Counter
11. Set the Counter to:
Oscilloscope
Timebase Period Width Acceptable Range TR Entry
1 ns/div
2 ns/div
10 ns/div
20 ns/
100 ns
200 ns
200 ns
200 ns
1 µs
1 µs
1.250 ns
10.00 ns
50.00 ns
100.0 ns
500.0 ns
1.049875 ns to 1.450125 ns
9.799 ns to 10.201 ns
49.795 ns to 50.205 ns
99.790 ns to 100.210 ns
499.750 ns to 500.250 ns
2 - 1
2 - 2
2 - 3
2 - 4
2 - 5
FUNCTION
INPUT A PULSE WIDTH A 50 Ω
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OUT 1 SMA/BNC
Adaptor
SMA Cable
+3$&RXQWHU
CHANNEL 1 2
3
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HP 81130A/’31A Performance Test
12. Check the HP 81130A width at the following settings:
127( Repeat the entire test for the second channel, if it is installed
Period Width Acceptable Range TR Entry
5.882 µs
5.882 µs1 µs 5 µs0.9997 µs to 1.0003 µs 4.9993 µs to 5.0007 µs2 - 7 2 - 8
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