HP 8924E CDMA Mobile Station Test Set
Introduction to Operation
Firmware Version A.02.00 and above
!
POWER
DO NOT APPLY
RF WHEN OFF
RF IN/OUT
MAX PWR
CDMA CALL CONTRO L
CDMA SCRNS
CELL
CALL
CTRL
SPECTRUM
GEN
CTRL
ANALOG SCRNS
ENCODER
RF
ANL
AF
ANL
SPEC ANL
RF
GEN
END
CALL
RANGE
RX
TEST
MSRPT
TX
TEST
DECODER
RX
TEST
ACP
TX
TEST
SCOPE
DUPLEX
CALL ANS
USER DATA
k1’
k1
k2’
k2
k3’
k3
ASSIGN
k4
RELEASE
k5
DUPLEX OUT
MAX PWR
200 mW
!
ANTENNA IN
!
6 W
FUNCTIONS
MSG
PRINTER
HELP
PRINT
DATA FUNCTIONS
REF SET
METER
INCR
INCR
: 10
SET
LO LIMIT HI LIMIT
CURSOR
CONTROL
CANCELSHIFT
I/O CONFIG CONFIG
PREV TESTS
AVG
INCR X10
PUSH TO
SELECT
INSTRUMENT STATE
ADRS
SAVE
LOCAL
RECALL
789
456
123
+
0
ON/OFF
YES
Ω
NO
%
ppm
dBµV
W
AUDIO OUTSQUELCHVOLUMEMIC/ACC
MAX
!
12 v Pk
_
HOLD
MEAS
RESET
ENTER
dB
GHz
dBm
%
MHz
V
s
kHz
mV
ms
Hz
µV
AUDIO IN
MAX
!
42 v Pk
PRESET
MEMOR
Y CARD
LOHI
HP Part No. 08924-90058
Printed in U. S. A.
August 1998
Rev. B
1
Copyright © Hewlett-Packard Company 1998
Notice
Information contained in this document is subject to change without notice.
All Rights Reserved . Reproduction, a daptation, or translation wit hout prior writ ten
permission is prohibited, except as allowed under the copyright laws.
This material may be reproduced by or for the U.S. Government pursuant to the
Copyright License under the clause at DFARS 52.227-7013 (APR 1988).
Hewlett-Packard Company
Learning Products Department
24001 E. Mission
Liberty Lake, WA 99019-9599
U.S.A.
2
Manufacturer’s Declaration
This statement is provided to comply with the requirements of
the German Sound Emission Directive, from 18 January 1991.
This product has a sound pressure emission (at the operator
position) < 70 dB(A).
• Sound Pressure Lp < 70 dB(A).
• At Operator Position.
• Normal Operation.
• According to ISO 7779:1988/EN 27779:1991 (Type Test).
Herstellerbescheinigung
Diese Information steht im Zusammenhang mit den Anforderungen der
Maschinenlärminformationsverordnung vom 18 Januar 1991.
• Schalldruckpegel Lp < 70 dB(A).
• Am Arbeitsplatz.
• Normaler Betrieb.
• Nach ISO 7779:1988/EN 27779:1991 (Typprüfung).
3
Safety
Considerations
GENERAL
This product and relat ed documen tation mu st be revie wed for fa miliar ization with
safety markings and instructions before operation.
This product has been designed and tested in accordance with IEC Publication
1010, "Safety Requirements for Electronic Measuring Apparatus," and has been
supplied in a safe condition. This instruction documentation contains information
and warnings which must be followed by the user to ensure safe operation and to
maintain the product in a safe condition.
SAFETY EARTH GROUND
A uninterruptible safety earth ground must be provided from the main power
source to the product input wiring terminals, power cord, or supplied power cord
set.
CHASSIS GROUND TERMINAL
To prevent a potential shock hazard , always conne ct the rear- panel chass is ground
terminal to earth ground when operating this instrument from a dc power source.
SAFETY SYMBOLS
Indicates instrument damage can occur if indicated operating limits are exceeded.
!
Indicates hazardous voltages.
Indicates earth (ground) terminal
WARNING
A WARNING note denotes a hazard. It calls attention to a procedure,
practice, or the like, which, if not correctly performed or adhered to, could
result in personal injury. Do not proceed beyond a WARNING sign until the
indicated conditions are fully understood and met.
CAUTION
A CAUTION note denotes a hazard. It calls attention to an operation procedure,
practice, or the like, which, if not correctly performed or adhered to, cou ld resu lt
in damage to or destruction of part or all of the product. Do not proceed beyond
an CAUTION note until the indicated conditions are fully unde rstood and met.
4
Safety Considerations for this Instrument
WARNING This product is a Safety Class I instrument (provided with a protective
earthing ground incorporated in the power cord). The mains plug shall only
be inserted in a socket outlet provided with a protective earth contact. Any
interruption of the protective conductor inside or outside of the product is
likely to make the product dangerous. Intentional in terruption is
prohibited..
Whenever it is likely that the protection has been impaired, the instrument
must be made inoperative and be secured against any unintended operation.
If this instrument is to be energized via an autotransformer (for voltage
reduction), make sure the common terminal is connected to the earth
terminal of the power source.
If this product is not used as specified, the protection provided by the
equipment could be impaired. This product must be used in a normal
condition (in which all means for protection are intact) only.
No operator serviceable parts in this product. Refer servicing to qualified
personnel. To prevent electrical shock, do not remove covers.
Servicing instructions are for use by qualified personnel only. To avoid
electrical shock, do not perform any servicing unless you are qualified to do
so.
The opening of covers or removal of parts is likely to expose dangerous
voltages. Disconnect the product from all voltage sources while it is being
opened.
Adjustments described in the manual are performed with power supplied to
the instrument while protective covers are removed. Energy available at
many points may, if contacted, result in personal inj ury.
The power cord is connected to internal capacitors that my remain live for
5 seconds after disconnecting the plug from its power supply.
For Continued protection against fire hazard, replace the line fuse(s) only
with 250 V fuse(s) or the same current rating and type (for example, normal
blow or time delay). Do not use repaired fuses or short circuited fuseholders.
5
CAUTION: Always use the three-prong ac power cord supplied with this product. Failure to ensure
adequate earth grounding by not using this cord may cause product damage.
This product is designed for use in Installation C a tegory II and Pollution Degree
2 per IEC 1010 and IEC 664 respectively.
This product has autoranging line voltage input, be sure the supply voltage is
within the specified range.
Ventilation Requirements: When installing the product in a cabinet, the
convection into and out of the product must not be restricted. The ambient
temperature (outside the cabinet) must be less than the maximum operating
temperature of the product by 4° C for every 100 watts dissipated in the cabinet.
If the total power dissipated in the cabinet is greater than 800 watts, then forced
convection must be used.
Product Markings
CE - the CE mark is a registered trademark of the European Community. A CE
mark accompanied by a year indicated the year the design was proven.
CSA - the CSA mark is a registered trademark of the Canadian Standards
Association.
6
HP 8924E
Hewett-Packard Warranty Statement for Commercial Products
Duration of
Warranty: 1 year
1. HP warrants HP hardware, accessories and supplies against defects in materials and
workmanship for the period specified above. If HP receives notice of such defects
during the warranty period, HP will, at its option, either repair or replace products
which prove to be defective. Replacement products may be either new or like-new.
2 HP warrants that HP software will not fail to execute its programming instructions, for
the period specified above, due to defects in material and workmanship wh en properly
installed and used. If HP receives notice of such defects during the warranty period, HP
will replace software media which does not execute its programming instructions due
to such defects.
3. HP does not warrant that the operation of HP products will be un interrupted or error
free. If HP is unable, within a reasonable time, to repair or replace any product to a
condition as warranted, customer will be entitled to a refund of the purchase price upon
prompt return of the product.
4 HP products may contain remanufactured parts equivalent to new in performance or
may have been subject to incidental use.
5. The warranty period begins on the date of delivery or on the date of installation if
installed by HP. If customer schedules or delays HP installation more than 30 days after
delivery, warranty begins on the 31st day from delivery.
6 Warranty does not apply to defects resulting from (a) improper or inadequate mainte-
nance or calibration, (b) software, interfac ing, parts or supplies not supplied by HP, (c)
unauthorized modification or misuse, (d) operation outside of the published environmental specifications for the product, or (e) improper site preparation or maintenance.
7 TO THE EXTENT ALLOWED BY LOCAL LAW, THE ABOVE WARRANTIES
ARE EXCLUSIVE AND NO OTHER WARRANTYOR CONDITION, WHETHER
WRITTEN OR ORAL IS EXPRESSED OR IMPLIED AND HP SPECIFICALLY
DISCLAIMS ANY IMPLIED WARRANTIES OR CONDITIONS OR MERCHANTABILITY, SATISFACTORY QUALITY, AND FITNESS FOR A PARTICULAR
PURPOSE.
8 HP will be liable for damage to tangible property per incident up to the greater of
$300,000 or the actual amount paid for the product that is the subject of the claim, and
for damages for bodily injury or death, to the extent that all such damages are determined by a court of competent jurisdiction to have been directly caused by a defective
HP product.
7
9. TO THE EXTENT ALLOWED BY LOCAL LAW, THE REMEDIES IN THIS
WARRANTY STATEMENT ARE CUSTOMER’S SOLE AND EXCLUSIVE
REMEDIES. EXCEPT AS INDICATED ABOVE, IN NO EVENT WILL HP OR ITS
SUPPLIERS BE LIABLE FOR LOSS OF DATA OR FOR DIRECT, SPECIAL,
INCIDENTAL, CONSEQUENTIAL (INCLUDING LOST PROFIT OR DATA), OR
OTHER DAMAGE, WHETHER BASED IN CONTRACT, TORT, OR
OTHERWISE.
FOR CONSUMER TRANSACTIONS IN AUSTRALIA AND NEW ZEALAND:
THE WARRANTY TERMS CONTAINED IN THIS STATEMENT, EXCEPT TO
THE EXTENT LAWFULLY PERMITTED, DO NOT EXCLUDE RESTRICT OR
MODIFY AND ARE IN ADDITION TO THE MANDATORY STATUTORY
RIGHTS APPLICABLE TO THE SALE OF THIS PRODUCT TO YOU.
8
Contents
Calibrate the Test Set 17
Table Of Contents
Calibration Procedures 18
Preset the Test Set. 20
CDMA Channel Level Calibration Procedure 21
Channel Power Measurement Calibration 23
RF Generato r Level Calibration (PC S Interface) 26
Average Power Measurement Zeroing 27
Correcting for RF Path Loss 31
Determining RF Path Loss 33
9
Contents
Set Up a Call 41
Setting Up a CDMA Call 42
Setting up a Call 43
Procedure Overview 51
Problem Solving Checklist 52
10
Contents
Mobile Station CDMA Tests 53
Table Of Contents
List of CDMA Tests 54
Rho (Transmitter Waveform Quality) 55
Minimum/Maximum Transmitter Power 57
FER (Frame Error Rate) 59
11
Contents
Mobile Station Analog Tests 65
List of Analog Tests 66
Performing a CDMA to Analog Handoff 67
Performing an Analog Call 71
Transmitter Measurements (no audio connections required) 75
Receiver Audio Distortion and Hum and Noise (requires audio connections) 78
Transmitter Audio Distortion and Hum and Noise (requires audio
connections) 83
12
Contents
Short Message Service Tests 87
Table Of Contents
List of CDMA SMS Tests 88
Sending Short Messages on the Paging/Access Channels 89
Sending Short Messages on the Traffic Channels 97
13
Contents
Authentication Tests 107
List of CDMA Authentication Tests 108
Initializing SSD to Zero 109
Updating SSD 117
Performing a Unique Challenge-Response 124
14
Contents
Protocol Logging 131
Table Of Contents
Hardware and Software Requirements 133
Connecting the Test Set to the Computer 135
Setting Up the Communications Package 137
Logging Protocol Messages 140
Control Commands for Protocol Logging 143
15
Contents
Index 149
16
1
Calibrate the Test Set
Calibrating The Test Set
Chapter 1
17
Chapter 1, Calibrate the Test Set
Calibration Procedures
Calibration Procedures
This chapter provides step-by-step procedures for performing the Test Set’s
calibration routines.
To determine when each of the following calibration procedures should be
performed, refer to the HP 8924E Users Guide, "Recommended Calibration
Procedures."
List of Procedures
If you are unfamiliar with the use of the cursor control knob, see
yourself with the CURSOR CONTROL knob." on pa ge 19
❒ CDMA Channel Level calibration - 8 minutes
❒ Channel Power Measurement calibration - 2 minutes or more
❒ RF Generator Level calibration - 15 seconds
❒ Average Power Measurement zeroing - 2 seconds
❒ RF Path Loss correction
.
"Familiarize
18
Familiarize yourself with the CURSOR CONTROL knob.
Chapter 1, Calibrate the Test Set
Calibration Procedures
1. Position
2. Select or set
Throughout this tutorial, the terms "position," “select,” and “set” are used to
describe the interaction of the cursor (which appears as a small, lighted
rectangular box) and the fields on the screen.
Position
To position the cursor at a field, rotate the knob to move the cursor.
Select
Calibrating The Test Set
Chapter 1
To select a field, position the cursor in front of a field or menu item, and then press the
cursor-control knob.
When a field is selected, a selection may be underlined, a list of choices may be displayed, or the field may be highlighted to indicate that it is ready for a data entry. In
some cases, a message appears at the top of the display to indicate suggested actions.
Set
To set a field, first select it, then choose a setting by either selecting from a list of
choices, underlining (such as On/Off
). or making a data entry.
If you are unfamiliar with ope rat ion of th e Test Set, se le ct sever al fie lds to se e the
what happens (rotate the cursor-control knob to move the cursor to any field and
press the knob), then press PRESET to reset the instrument.
19
Chapter 1, Calibrate the Test Set
Preset the Test Set.
Preset the Test Set.
1. If the Test Set is not powered on:
a. turn on power to the PCS Interface (if one is
connected), then...
b. turn on power to the Test Set. Wait for the Test
Set to complete its power-up routine
2. Press the PRESET key (to begin this procedure
in a known state).
Call Status
Transmitting
Page Sent
Access Probe
Connected
Softer Handoff
Hard Handoff
RF Channel
384
Register
Softer
Handoff
Begin/End
Answer Mode
Auto/Manual
Call Limit
None/Page
CDMA CALL CONTROL
MS FER
Report
Interval
5 frames
by # frames
On/Off
by # frames
On/Off
5
Traffic
Data Mode
Svc Opt 1
Data Type
Echo
Echo Delay
Short
Avg Power
Power Zero
MS FER Report
Avg Power
MS ID
Phone Num
5099214001
MS Database
ESN
1234
Sector A
Power
-73.0
----
dBm/BW
%
dBm
To Screen
CDMA
CALL CNTL
Analog
RX TEST
Cnfig
PRNT CNFG
Pressing the PRESET key will configure the Test Set using factory default settings, and display the CDMA
CALL CONTROL screen.
If you have the Test Set configured to operate with a PCS Interface, and you do not turn PCS Interface
power on before the Test Set, the message “PCS Interface not found. Check power, cabling or CONFIG.”
will be displayed. To correct this condition, follow the correct sequence of powering up these two units.
20
Chapter 1, Calibrate the Test Set
CDMA Channel Level Calibration Procedure
CDMA Channel Level Calibration Procedure
Approximate time: 8 minutes
1. Load the PCB_CAL procedure.
1. Press the TESTS key.
2. Select ROM from the list of choices for the
Select Procedure Location field.
3. Select PCB_CAL from the list of choices for
the Select Procedure Filename field.
2. Run the PCB_CAL Procedure.
1. Select the Run Test field.
Select Procedure Location:
ROM
Select Procedure Filename:
PCB_CAL
TESTS (Main Menu)
TESTS (Main Menu)
Calibrating The Test Set
Chapter 1
RUN TEST
2. Disconnect the mobile station from the Test
Set’s (or PCS Interface’s) RF IN/OUT port.
(The Test Set beeps several times and displays
the message to disconnect all front-panel
Select Procedure Location:
ROM
Select Procedure Filename:
PCB_CAL
cables. You only need to disconnect the RF
input from the mobile.)
3. When the PCB_CAL proce dure has completed,
cycle power to the Test Set.
At one point in the procedure, the Test Set will beep and the message "Direct latch write occurred. Cycle power
when done servicing" will appear. This is normal. Cycle pow e r when the procedure has completed.
21
Chapter 1, Calibrate the Test Set
CDMA Channel Level Calibration Procedure
Procedure Overview
The Test Set optimizes the level accuracy of CDMA code channels and the
AWGN (Additive White Gaussian Noise) generator by measuring the analog I/Q
signals using an internal DSP-based voltmeter. Level correction factors are
generated by a ROM-based program named PCB_CAL and are applied to gain
control DACs, which control the fine level adjustment in the amplitude scaling
path.
Calibrated channel power provides accurate values for Eb/Nt, the ratio between
Traffic channel power and AWGN. It is critical that these levels remain accurate.
A level accuracy error of 0.8 dB could alter FER from 0.5% to 5%.
AWGN
Diagnostic Mux
To DSP
Voltmeter
Analog I
Analog Q
Level Correction
Factors
Gain Control
DAC
Σ
I Output
Σ
Q Output
22
Chapter 1, Calibrate the Test Set
Channel Power Measurement Calibration
Channel Powe r Measurement Cal i bration
Approximate time: 2 minutes
1. Connect the Test Set’s generator to the Test Set’s analyzer.
!
POWER
DO NOT APPLY
RF WHEN OFF
RF IN/OUT
MAX PWR
CDMA CALL CONTROL
CDMA SCRNS
CELL
CALL
CTRL
SPECTRUM
GEN
CTRL
ANALOG SCRNS
ENCODER
RF
ANL
AF
ANL
SPEC ANL
RF
GEN
END
CALL
RANGE
RX
TEST
MSRPT
TX
TEST
DECODER
RX
TEST
ACP
TX
TEST
SCOPE
DUPLEX
CALL ANS
USER DATA
k1’
k1
k2’
k2
k3’
k3
ASSIGN
k4
RELEASE
k5
DUPLEX OUT
MAX PWR
200 mW
!
ANTENNA IN
!
6 W
FUNCTIONS
MSG
PRINTER
HELP
PRINT
DATA FUNCTIONS
REF SET
METER
INCR
INCR
: 10
SET
LO LIMIT HI LIMIT
CURSOR
CONTROL
CANCELSHIFT
I/O CONFIG CONFIG
PREV TESTS
AVG
INCR X10
PUSH TO
SELECT
INSTRUMENT STATE
ADRS
SAVE
LOCAL
RECALL
789
456
123
+
0
ON/OFF
YES
Ω
NO
%
ppm
dBµV
W
AUDIO OUTSQUELCHVOLUMEMIC/ACC
MAX
!
12 v Pk
_
HOLD
MEAS
RESET
ENTER
dB
GHz
dBm
%
MHz
V
s
kHz
mV
ms
Hz
µV
AUDIO IN
!
Calibrating The Test Set
Chapter 1
PRESET
MEMOR
Y CARD
LOHI
MAX
42 v Pk
OR...
With
HP 83236 PCS INTERFACE
23
CDMA CALL
CALL ANS
USE DA
CDMA
k1’
CELL
CALL
k1
k2’
SPECTR
GEN
k2
k3’
k3
ANALOG
ASSIG
ENCO
RF
k4
RELE
k5
SPEC
RF
POWE
DO NOT
!
H
RF IN/
!
MAX PWR
POWER
ONOFF
83236B
PCS INTERFACE
!
MAX
ANTENNDUPLEX
FROM DUPLEX OUT TO ANT IN
TEST SET
MSG
END
HELP
RANG
REF
INCR
RX
LO HI
MSRP
TX
CURSO PUSH
DECO
RX
ACP
TXAF
SCOP
DUPL
CANCSHIFT
RF IN/OUT RF OUT only
FUNCTIO
PRINT
PRINT
DATA
METE
INCR
1.8-2.0 GHz UUT
I/O CONFI
PREV TESTS
AVG
INCR
INSTRUMENT
ADRS
SAVE
LOCA
RECA
789
456
123
+
0
Ω
YES
NO
ppm
ON/
AUDIO SQUELVOLUMIC/
MAX
!
HOLD
MEAS
PRESE
MEM
ENTE
dB
GHz
%
MHz
s
kHz
_
Hzms%
AUDIO
MAX
!
LHI
Chapter 1, Calibrate the Test Set
Channel Power Measurement Calibration
2. (Optional) Enter an alternate channel standard.
1. Press and release the SHIFT key and then press
CONFIGURE
the TESTS key to display the CONFIGURE
screen.
RF In/Out
- X.X
2. Select the Alt Chn Std field, and select a channel
standard from the list of choices.
3. Press the PREV key to return to the CDMA
CALL CONTROL screen.
Alt Chn Std
US PCS
Duplex Out
- X.X
Antenna In
- X.X
dB
Adding an alternate channel standard will increase the time required for the Test Set to perform Channel
Power Calibration, but should be performed if you will have an immediate need to test more than one type of
mobile station using more than one type of RF channel standard.
3. Select the Channel Power measurement.
1. If Chan Power is not displayed in the field as
shown, set this field to Chan Power.
Call Status
Transmitting
Page Sent
Access Probe
Connected
Softer Handoff
Hard Handoff
RF Channel
384
Register
Answer Mode
Auto/Manual
Call Limit
None/Page
CDMA CALL CONTROL
MS FER
Report
Interval
5 frames
Traffic
Data Mode
Svc Opt 1
Data Type
Echo
Avg Power
Power Zero
Chan Power
MS Database
ESN
-73.0
----
dBm/BW
To Screen
CDMA
CALL CNTL
Analog
RX TEST
Cnfig
PRNT CNFG
dBm
24
4. Calibrate the Channel Power measurement.
Chapter 1, Calibrate the Test Set
Channel Power Measurement Calibration
1.Select Calibrate to start the calibration.
Call Status
Transmitting
Page Sent
Access Probe
Connected
Softer Handoff
Hard Handoff
RF Channel
384
Register
Answer Mode
Auto/Manual
Call Limit
None/Page
CDMA CALL CONTROL
MS FER
Report
Interval
5 frames
Traffic
Data Mode
Svc Opt 1
Data Type
Echo
Power Meas
Calibrate
Chan Power
MS Database
ESN
-73.0
----
dBm/BW
Calibration may take a minute or longer, depending o n the RF Channel Std and Alt Chn St d field settings.
Average Power measurements are zeroed as part of the Channel Power calibration process.
Procedure Overview
Calibrating Channel Power measurements ensures that the Test Set achieves
accurate low-level CDMA power measurements.
Channel Power measurements:
• indicate power in a 1.23 MHz bandwidth
• are performed at one of the Test Set’s IF frequencies by a DSP (Digital Signal
Processor)
• use the Test Set’s average power detector to calibrate the relative levels measured at IF.
dBm
To Screen
CDMA
CALL CNTL
Analog
RX TEST
Cnfig
PRNT CNFG
Calibrating The Test Set
Chapter 1
Average Power measurements are zeroe d as part of the Chann el Power cal ibrati on
process.
25
Chapter 1, Calibrate the Test Set
RF Generator Level Calibration (PCS Interface)
RF Generator Level Calibrat ion (PCS Interfa ce)
This procedure is performed only on Test Sets configured with an HP 83236B
PCS Interface.
Approximate time: 15 seconds
1. Start calibration procedure.
1. Press and release the SHIFT key and then press
the TESTS key to display the CONFIGURE
screen.
CONFIGURE
2. Select the Calibrate to start the calibration.
RF Gen Lvl
Calibrate
The message "Calibrating RF Generator Levels" will be displayed until the calibration process has
completed.
Procedure Overview
During this proced ure, the PCS Interfa ce’ s internal compensatio n f ac tor s ar e used
to compute attenuator path values for the PCS Interface generator and the required
signal level from the Test Set’s DUPLEX OUT port.
NOTE: This procedure will cause a currently connected call to drop . (The RF IN/OUT path is
momentarily de-coupled from the front panel connector during this calibration.)
26
Chapter 1, Calibrate the Test Set
Average Power Measurement Zeroing
Average Power Measurement Zeroing
Approximate length of time: 2 seconds
1. Remove power from the RF IN/OUT connector.
!
POWER
DO NOT APPLY
RF WHEN OFF
RF IN/OUT
MAX PWR
!
6 W
MAX PWR
!
200 mW
ANTENNA INDUPLEX OUT
CDMA CALL CONTRO L
CDMA SCRNS
CELL
CALL
CTRL
SPECTRUM
GEN
CTRL
ANALOG SCRNS
ENCODER
RF
ANL
AF
ANL
SPEC ANL
RF
GEN
END
CALL
RANGE
RX
TEST
MSRPT
TX
TEST
DECODER
RX
TEST
ACP
TX
TEST
SCOPE
DUPLEX
CALL ANS
USER DATA
k1’
k1
k2’
k2
k3’
k3
ASSIGN
k4
RELEASE
k5
FUNCTIONS
MSG
PRINTER
HELP
PRINT
DATA FUNCTIONS
REF SET
METER
INCR
INCR
: 10
SET
LO LIMIT HI LIMIT
CURSOR
CONTROL
CANCELSHIFT
I/O CONFIG CONFIG
PREV TESTS
AVG
INCR X10
PUSH TO
SELECT
INSTRUMENT STATE
ADRS
LOCAL
789
456
123
0
YES
NO
ppm
ON/OFF
W
AUDIO OUTSQUELCHVOLUMEMIC/AC C
MAX
!
12 v Pk
SAVE
RECALL
+
Ω
%
dBµV
_
HOLD
MEAS
RESET
ENTER
dB
GHz
dBm
%
MHz
V
s
kHz
mV
ms
Hz
µV
AUDIO IN
!
Calibrating The Test Set
Chapter 1
PRESET
MEMOR
Y CARD
LOHI
MAX
42 v Pk
OR...
With
HP 83236 PCS INTERFACE
27
CDMA CALL
CALL ANS
USE DA
CDMA
k1’
RANG
CELL
CALL
k1
k2’
SPECTR
MSRP
GEN
k2
k3’
k3
ANALOG
ASSIG
DECO
ENCO
RF
k4
RELE
k5
SCOP
SPEC
RF
DUPL
POWE
DO NOT
!
RF IN/
H
!
MAX PWR
POWER
ONOFF
DUPLEX
83236B
PCS INTERFACE
!
MAX
ANTENN
FROM DUPLEX OUT TO ANT IN
TEST SET
MSG
END
HELP
REF
INCR
RX
LO HI
TX
CURSO PUSH
RX
ACP
TXAF
CANCSHIFT
RF IN/OUT RF OUT only
FUNCTIO
PRINT
PRINT
DATA
METE
INCR
1.8-2.0 GHz UUT
I/O CONFI
PREV TESTS
AVG
INCR
INSTRUMENT
ADRS
SAVE
LOCA
RECA
789
456
123
+
0
Ω
YES
NO
ppm
ON/
AUDIO SQUELVOLUMIC/
MAX
!
HOLD
MEAS
PRESE
MEM
ENTE
dB
GHz
%
MHz
s
kHz
_
Hzms%
AUDIO
MAX
!
LHI
Chapter 1, Calibrate the Test Set
Average Power Measurement Zeroing
2. Check the Test Set’s output power.
Manual Operation:
1. Press the GEN CTRL key to display the
CDMA
2. If the RF Power field is displaying a value less
than or equal to −75 dBm/BW, the Test Set’s
output power is low enough for zeroing average
power measurements. Continue with the next
step.
If the RF Power field is displaying a value greater
than −75 dBm/BW:
GENERATOR CONTROL screen.
Sector Pwr
-75.0
dBm/BW
CDMA GENERATOR CONTROL
AWGN
Off
RF Power
−
75.00
dBm/BW
Eb/Nt
−−−−
Press the PRESET key. Or if you have other
settings you do not want chan ged, turn off
output power as follows:
Use the ON/OFF key along with the knob to
turn off Sector A Power and AWGN.
Lowering power from the CDMA generators will prevent output power from internally cross-coupling to the
RF IN/OUT path during Average Power measurement zeroing.
Presetting the Test Set will turn off AWGN and will set Sector A Power to a level that is low enough to prevent
cross-coupling between gener at o r and input signal paths.
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3. Select the Average Power measurement.
Chapter 1, Calibrate the Test Set
Average Power Measurement Zeroing
1. Press the CDMA SCRNS - TX TEST key to
display the CDMA CELLULAR MOBILE
TRANSMITTER TEST screen.
2. If Avg Power is not displayed in the field as
shown, select Avg Power.
CDMA CELLULAR MOBILE TRANSMITTER TEST
Avg Power
Calibrating The Test Set
Chapter 1
29
Chapter 1, Calibrate the Test Set
Average Power Measurement Zeroing
4. Zero the Average Power measurement.
1. Select Zero to zero the Average Power
measurement.
CDMA CELLULAR MOBILE TRANSMITTER TEST
Avg Power
Power Meas
Zero
During this process, the message "Zeroing Average Power" will be displayed (for about 2 seconds).
If RF power was not lowered as shown in step 2, the Test Set will display "Zero degraded. Reduce generator
level for best results."
Procedure Overview
This procedure establishes a 0 dBm reference for Average Power measurements.
Average Power measurement mode is used on higher-level signals. Lower-level
power measurements are performed by the Test Set’s Channel Power
measurement.
NOTE: A misleading Average Power measurement may appear when low (or no) signal power is
applied to the RF Input! When the RF generator’s output port selection is RF IN/OUT
some of the signal energy from the Test Set’s generator is detected by the Test Set’s
broadband average power meter. This condition does not affect typical CDMA
measurements for two reasons: 1) During Average Power measurements, CDMA generator
levels are too low to introduce significant energy to the power detector. 2) When the
generator level is high enough to introduce significant energ y to the power detector, the
mobile station’s signal power should be within the range of Channel Power measurements.
Channel power measurements are frequency-selective, an d do not detect significant energy
from the Test Set’s generator, which is tuned 45 MHz away from the analyzer.
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