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Wandel & Goltermann PCM-3 Communications Test Set
Fabrikant:
Wandel & Goltermann
Model: PCM-3
Datum: 1979
Categorie: Meetinstrumenten
Groep: Communications Test Set
Beschrijving:
Informatie:
                                    

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Wandel & Goltermann -- PCM-3 -- Gebruikershandleiding
Bestandsnaam: Wandelgoltermann-8447-Manual-Page-1-Picture
Manueel de Type: Gebruikershandleiding
Pagina 's: 117
Grootte: 87.31 Mbytes (91555429 Bytes)
Taal: Engels
Herziening:
Handleiding-ID/Number: 0.2.1 .80 2650 GN V . 2596
Datum: 01 januari 1979
Kwaliteit: Gescande document, lezen deels slecht, deels niet leesbaar.
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Informatie:
Description and Operating Manual

INTRODUCTION
1.
SPECIFICATIONS...........................................................................................1-1
1.1. Operating
function......................................................................................1-1
1.2. Test object
matching......................................................................................1-1
1.3. Send
signals.....................................................................................................1-2
1 .4. Summary of measurement modes, level ranges and
frequency ranges 1-4
1.5. Use as level generator or as level
meter...........................................1-5
1 .6. Measurement modes and their error limits in the preferred
range of relative level and for generator terminated by Z
and receiver fed by Z source =
0..........................................................1-5
1.7. Attenuation characteristic of the
filters...........................................1-10
1.8. Additional inputs and outputs (rear
side)...........................................1-13
1.9. Measuring
sequence......................................................................................1-13
1.10. Additional
devices......................................................................................1-16
1.11. General
data.....................................................................................................1-18
1.12. Ordering
information...............................................................................1-20
2.
OPERATION...................................................................................................................2-5
2.1. Setting-up and putting into
service...................................................2-5
2.1.1. Setting-up the
instrument........................................................................2-5
2.1.2. Operating
controls......................................................................................2-5
2.1.3. A.C. line
connection...............................................................................2-5
2.2. Prel iminary
settings......................................................................................2-6
2.2.1. Operating
functions......................................................................................2-6
2^2.2. Matching to the object under
test..........................................................2-7
2.2.2. 1. Setting relative
level...............................................................................2-7
2.2.2.2. Generator output; output
impedance..................................................2-7
2.2.2.3. Receiver input/ input
impedance..........................................................2-8
2.3. Test set-up and connection of objects under
test.............................2-8
2.3.1. Loop
measurements......................................................................................2-8
2.3.2. End-to-end
measurements........................................................................2-9
2.3.3. Separate measurement of the send or receive part of a
PCM multiplex
equipment........................................................................2-10
2.3.4. Measurements on a test object with digital interfaces
. . . 2-11
2.3.5. Connection through the Test Point Scanner MU-3 .... 2-11
2.4. Measurement modes of the
PCM-3...........................................................2-12
2.4.1. Summary of measurement
modes.................................................................2-13
2.4.2. Explanation of particular measurement
modes....................................2-15
2.4.2.1. Overall
loss.....................................................................................................2-15
2.4.2.2. Attenuation/frequency
distortion..........................................................2-16
2.4.2.3. Variation of gain with input
level..........................................................
2-16
2.4.2.4.
Crosstalk............................................................................................................2-16
2.4.2.5. Impedance balance
ratio........................................................................2-16
2.4.3. Measurement mode
number........................................................................2-17
2.4.4. Single measurement and incremental step measurement .
. . 2-17
2.4.5. Block measurement and measuring
program....................................2-18
2.5. Data
entry............................................................................................................2-18
2.5.1. Entry of a single measurement
.................................................................2-19
2.5.1.1. Selection of measurement
mode.................................................................2-19
2.5.1.2. Entry of send
parameters...............................................................................2-22
2.5.1.3. Run of single
measurements........................................................................2-23
2.5.1.4. Measurement by incremental
step..........................................................2-23
2.5.2. Entry of a block
measurement...................................................................2-24
2.5.2.1. Selection of measurement
mode.................................................................2-24
2.5.2.2. Indication of the send parameters and tolerance
limits . . .2-25
2.5.2.3. Run of block
measurements........................................................................2-25
2.5.3. Entry of a measuring
program.................................................................2-26
2.5.3.1. Assembly of the
program...............................................................................2-26
2.5.3.2. Change of
program,clear...............................................................................2-27
2.5.3.3. Program configuration and
execution...................................................2-27
2.6. Measurement sequence
conditions..........................................................2-31
2.6.1. Measurement run
switch...............................................................................2-31
2.6.2. Halt
switch.....................................................................................................2-31
2.6.3. Print
release.....................................................................................................2-32
2.7. Indicator
area.....................................................................................................2-33
2.7.1. Measurement run
information.................................................................2-33
2.7.2. Measurement mode
display........................................................................2-34
2.7.3. Send parameter
display...............................................................................2-34
2.7.3.1. Send level
indicator.......................................................................................2-34
2.7.3.2. Send frequency
indicator........................................................................2-35
2.7.3.3. Additional
symbols.......................................................................................2-35
2.7.4. Measured result
display.................................................................................2-36
2.8. Rear
connections..............................................................................................2-37
2.8.1. A.C. voltage
output.......................................................................................2-37
2.8.2. Receiver
input.....................................................................................................2-37
2.9. Additional devices (Plug-in
subassemblies)...........................................2-38
2.9.1. Printer
interface..............................................................................................2-38
2.9.2.
lEC-Bus-interface..............................................................................................2-40
2.9.3. End-to-end and signal ling distortion measuring
device . . .2-41
2.9.3.1. End-to-end measuring
device.................................................................2-41
2.9.3.2. Signalling distortion measuring
device.................................... .2-41
2.9.4. Interface for PDA-3, PDG-3,
MU-3...................................................2-44
TECHNICAL
INSTRUCTIONS........................................................................3-1
3.1 . Extension to the Automatic Measuring System PA-3 .... 3-1
3.1.1. Setting-up instruments and connecting
cables....................................3-1
3.1.2. Instrument
adjustments...............................................................................3-1
3.1 .3. Measurement run and indication of
results...........................................3-5
3.1.4. Computer
control.............................................................................................3-5
3.2. Characteristics of the Digital Signal Instruments PDA-3
and
PDG-3....................................................................................................3-5
3.2.1. PCM DigitaI SignaI Analyzer
PDA-3..................................................3-6
3.2.2. PCM Digital Signal Generator
PDG-3..................................................3-6
3.3. Consideration of CC ITT Recommendation G.712
as affecting
PCM-3/PA-3........................................................................3-7
3.3.1. Attenuation/frequency
distortion..........................................................3-8
3.3.2. Variation of gain with input
level..........................................................3-8
3.3.3. Measurement of idle channel
noise..........................................................3-9
3.3.4. Total distortion, including quantizing
distortion.............................3-10
3.3.5. Interchannel
crosstalk...............................................................................3-11
3.3.6. Go-to-return crosstalk or level in own
channel.............................3-13
3.3.7. Impedance of audio input and output
parts...........................................3-14
3.3.8. Out-of-band signals at the channel
input...........................................3-14
3.3.9. Spurious out-of-band signals at the channel output
.... 3-15
4. FUNCTION AND
CHARACTERISTICS..................................................4-3
4.1. Send
section.....................................................................................................4-3
4.2. Receive
section.............................................................................................4-4
4.3. Digital
section.............................................................................................4-7
4.4. End-to-end and signa I ling distortion measuring device
. . . 4-10
5. FUNCTION CHECKING, MAINTENANCE AND
GENERAL
INFORMATION...............................................................................5-1
5.1. Function
checking......................................................................................5-1
5.1.1. Short test of digital
section........................................................................5-1
5.1.2. Short test of measuring
section.................................................................5-1
5.1 .3. Further checks on measuring
sections..................................................5-2
5.1 .4. Operation of PCM-3 as level generator
only....................................5-3
5.1.5. Operation of PCM-3 as level meter
only...........................................5-4
5.1.6. Additional test
modes...............................................................................5-4
5.2. Maintenance and general
information..................................................5-5
5.2.1. Mechanical
assembly...............................................................................5-5
5.2.2. Insertion of plug-in
subassemblies..........................................................5-6
5.2.3. Changing the customer program
memory...........................................5-6
5.2.4. Conversion from dBm to dB
calibration..................................................5-6
5.2.5. Changing
fuses.............................................................................................5-8
5.2.6. Modification of the measuring signal for signalling
distortion . 5-8
5.2.7. Use in 19-inch
racks......................................................................................5-8
5.2.8. Shipping
instructions......................................................................................5-10
5.2.9. Matching to the V.24 Printer
Interface..................................................5-11
5.2.9.1 . Baud
rate............................................................................................................5-12
5.2.9.2. Acknowledgements from the
printer..........................................................5-12
5.2.9.3. Waiting (Standby) Time during "CR" and
"LF"....................................5-12
5.2.9.4. Interface
testing.............................................................................................5-13
5.2.9.5. Matching to special properties of a
printer...........................................5-13
Wandelgoltermann-8447-Manual-Page-1-Picture
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