Boonton Electronics 4230A Service Manual

MODEL 4230A

RF POWER METER

INSTRUCTION MANUAL

BOONTON ELECTRONICS				25 EASTMANS ROAD					PARSIPPANY, NEW JERSEY 07054-0465
TELEPHONE: [phone]		FAX: [phone]					E-MAIL: [e-mail]

MANUAL P/N 98102400A DATE 10/98

SAFETY SUMMARY

The following general safety precautions must be observed during all phases of operation and maintenance of this instrument. Failure to comply with these precautions or with specific warnings elsewhere in this manual violates safety standards of design, manufacture, and intended use of the instruments. Boonton Electronics assumes no liability for the customer's failure to comply with these requirements.

THE INSTRUMENT MUST BE GROUNDED.

To minimize shock hazard the instrument chassis and cabinet must be connected to an electrical ground. The instrument is equipped with a three conductor, three prong AC power cable. The power cable must either be plugged into an approved three-contact electrical outlet or used with a three-contact to a two-contact adapter with the (green) grounding wire firmly connected to an electrical ground at the power outlet.

DO NOT OPERATE THE INSTRUMENT IN AN EXPLOSIVE ATMOSPHERE.

Do not operate the instrument in the presence of flammable gases or fumes.

KEEP AWAY FROM LIVE CIRCUITS.

Operating personnel must not remove instrument covers. Component replacement and internal adjustments must be made by qualified maintenance personnel. Do not replace components with the power cable connected. Under certain conditions dangerous voltages may exist even though the power cable was removed; therefore, always disconnect power and discharge circuits before touching them.

DO NOT SERVICE OR ADJUST ALONE.

Do not attempt internal service or adjustment unless another person, capable of rendering first aid and resuscitation, is present.

DO NOT SUBSTITUTE PARTS OR MODIFY INSTRUMENT.

Do not install substitute parts of perform any unauthorized modification of the instrument. Return the instrument to Boonton Electronics for repair to ensure that the safety features are maintained.

This safety requirement symbol has been adopted by the International Electrotechnical

Commission, Document 66 (Central Office) 3, Paragraph 5.3, which directs that an

instrument be so labeled if, for the correct use of the instrument, it is necessary to refer

to the instruction manual. In this case it is recommended that reference be made to the

instruction manual when connecting the instrument to the proper power source. Verify

that the correct fuse is installed for the power available, and that the switch on the rear

panel is set to the applicable operating voltage.

The CAUTION sign denotes a hazard. It calls attention to an operation procedure,

CAUTION

practice, or the like, which, if not correctly performed or adhered to, could result in

damage to or destruction of part or all of the equipment. Do not proceed beyond a

CAUTION sign until the indicated conditions are fully understood and met.

WARNING

The WARNING sign denotes a hazard. It calls attention to an operation procedure.,

practice, or the like, which, if not correctly performed or adhered to, could result in

injury of loss of life. Do not proceed beyond a warning sign until the indicated conditions

are fully understood and met.

This SAFETY REQUIREMENT symbol has been adopted by the International

Electrotechnical Commission, document 66 (Central Office)3, Paragraph 5.3 which

indicates hazardous voltage may be present in the vicinity of the marking.

WARRANTY

Boonton Electronics (Boonton) warrants its products to the original Purchaser to be free from defects in material and workmanship for a period of one year from date of shipment for instrument, and for one year from date of shipment for probes, power sensors and accessories. Boonton further warrants that its instruments will perform within all current specifications under normal use and service for one year from date of shipment. These warranties do not cover active devices that have given normal service, sealed assemblies which have been opened or any item which has been repaired or altered without Boonton's authorization.

Boonton's warranties are limited to either the repair or replacement, at Boonton's option, of any product found to be defective under the terms of these warranties.

There will be no charge for parts and labor during the warranty period. The Purchaser shall prepay shipping charges to Boonton or its designated service facility and shall return the product in its original or an equivalent shipping container. Boonton or its designated service facility shall pay shipping charges to return the product to the Purchaser. The Purchaser shall pay all shipping charges, duties and taxes if a product is returned to Boonton from outside of the United States.

THE FOREGOING WARRANTIES ARE IN LIEU OF ALL OTHER WARRANTIES, EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. BE shall not be liable to any incidental or consequential damages, as defined in Section 2-715 of the Uniform Commercial Code, in connection with the products covered by the foregoing warranties.

	TABLE OF CONTENTS
	SECTION I — GENERAL INFORMATION
Paragraph		Page
1-1	Introduction .................................................................................................................................................................	1-1
1-3	Description ...................................................................................................................................................................	1-1
1-5	Features .........................................................................................................................................................................	1-1
1-6	Power Sensors ....................................................................................................................................................	1-1
1-10	Simple Instrument Setup and Operation ......................................................................................................	1-1
1-11	Alphanumeric Displays....................................................................................................................................	1-1
1-12	Selectable Ranging ...........................................................................................................................................	1-1
1-13	Selectable Filtering ...........................................................................................................................................	1-1
1-14	Zeroing ................................................................................................................................................................	1-2
1-15	Built-In Precision Calibration ........................................................................................................................	1-2
1-16	Chart Recorder Output .....................................................................................................................................	1-2
1-17	Optional Interface ..............................................................................................................................................	1-2
1-18	Accessories ...................................................................................................................................................................	1-2
1-20	Options .........................................................................................................................................................................	1-2
1-21	Option -01, Rear Input ...................................................................................................................................	1 - 2
1-22	Option -02, Rear Calibrator ..........................................................................................................................	1 - 2
1-23	Option -03, RS-232 .........................................................................................................................................	1 - 2
1-24	Option -30, Extended Warranty ...................................................................................................................	1 - 2
1-25	Specifications ...............................................................................................................................................................	1-2
	SECTION II — INSTALLATION
2-1	Introduction .................................................................................................................................................................	2-1
2 - 2	Unpacking ...................................................................................................................................................................	2 - 1
2 - 3	Mounting .....................................................................................................................................................................	2 - 1
2 - 4	Power Requirements .................................................................................................................................................	2 - 1
2 - 5	Connections ................................................................................................................................................................	2 - 1
2 - 6	Sensor .................................................................................................................................................................	2 - 1
2 - 7	Recorder.............................................................................................................................................................	2 - 2
2 - 8	GPIB ....................................................................................................................................................................	2 - 2
2 - 9	RS-232 ................................................................................................................................................................	2 - 2
2-10	Preliminary Check.....................................................................................................................................................	2 - 2
	SECTION III — OPERATION
3-1	Introduction .................................................................................................................................................................	3-1
3-3	Operating Controls, Indicators and Connectors ...................................................................................................	3-1
3-5	Operating the Instrument ..........................................................................................................................................	3-1
3-7	Measurement Display ................................................................................................................................................	3-1
3-9	Menu Structure ............................................................................................................................................................	3-1
3-13	Menu Key .....................................................................................................................................................................	3-7
3-16	Channel Menu ....................................................................................................................................................	3-7
3-18	Setup Menu ........................................................................................................................................................	3-7
3-20	Programming Interfaces ....................................................................................................................................	3-11
3-21a	IEEE Menu ..........................................................................................................................................................	3-11
3-21b	RS-232 Menu ......................................................................................................................................................	3-11
3-22	Diagnostics Menu .............................................................................................................................................	3-13
3-23	Sensor Key ...................................................................................................................................................................	3-13
3-31	Edit Data Menu ..................................................................................................................................................	3-15
3-32	Linearity Factors ................................................................................................................................................	3-15
3-33	FREQUENCY Calibration Factors ...................................................................................................................	3-16

i

3-36	Save .....................................................................................................................................................................	3-16
3-37	Freq Key .......................................................................................................................................................................	3-16
3-40	Avg Key .......................................................................................................................................................................	3-16
3-43	Zero/Cal Key ................................................................................................................................................................	3-16
3-48	Ref Level Key ...............................................................................................................................................................	3-18
	SECTION IV — APPLICATION NOTES
4-1	Introduction .................................................................................................................................................................	4-1
4-3	Sensor Calibration ......................................................................................................................................................	4-1
4-4	General................................................................................................................................................................	4-1
4-5	14-Point Linearity Data ...................................................................................................................................	4-1
4-7	High Frequency Calibration Points ...............................................................................................................	4-1
4-9	Zeroing .........................................................................................................................................................................	4-1
4-16	Dynamic Range ...........................................................................................................................................................	4-3
4-18	Filtering ........................................................................................................................................................................	4-3
4-22	Noise .............................................................................................................................................................................	4-4
4-23	Noise Reduction ................................................................................................................................................	4-4
4-25	Error Computation ............................................................................................................................................	4-5
4-27	Noise Error Examples ......................................................................................................................................	4-5
4-28	Integration of Power .........................................................................................................................................	4-5
4-29	Clearing of Filter...............................................................................................................................................	4-5
4-30	Partial Results ....................................................................................................................................................	4-5
4-31	Measurement Time .....................................................................................................................................................	4-5
4-32	Step Response ....................................................................................................................................................	4-5
4-33	Continuous Response .......................................................................................................................................	4-5
4-34	Overhead Time ..................................................................................................................................................	4-5
4-36	Digital Filter ......................................................................................................................................................	4-5
4-37	Default Filter Lengths ......................................................................................................................................	4-5
4-38	Settled Measurement Time .............................................................................................................................	4-5
4-39	Fast Mode Measurement Time ......................................................................................................................	4-5
4-40	High Frequency Accuracy .........................................................................................................................................	4-10
4-43	Waveform Sensitivity .................................................................................................................................................	4-10
4-48	Chart Recorder Operation ..........................................................................................................................................	4-13
4-50	Bar Graph Operation .................................................................................................................................................	4-13
4-52	Watts Mode ........................................................................................................................................................	4-13
4-53	dBm Mode ..........................................................................................................................................................	4-13
4-54	dBr Mode ............................................................................................................................................................	4-14
4-55	Remote (GPIB) Operation ...........................................................................................................................................	4-14
4-56	Introduction ........................................................................................................................................................	4-14
4-58	Local Operation .................................................................................................................................................	4-14
4-59	Remote Operation .............................................................................................................................................	4-14
4-60	Bus Address .......................................................................................................................................................	4-14
4-61	Terminating Characters ...................................................................................................................................	4-14
4-62	Listen Operation ................................................................................................................................................	4-14
4-63	Talk Operation ..................................................................................................................................................	4-14
4-65	IEEE-488 Command Support .........................................................................................................................	4-14
4-66	Number Formatting ............................................................................................................................................	4-15
4-67	String Format ......................................................................................................................................................	4-17
4-68	Listen Parameter Commands ............................................................................................................................	4-17
4-70	Listen Action Commands .................................................................................................................................	4-17
4-71	Listen Array Commands ...................................................................................................................................	4-17
4-73	Talk Modes .........................................................................................................................................................	4-18
4-77	Talk Mode 0 (Talk Measurement Floating Point)......................................................................................	4-18
4-78	Talk Mode 1 (Talk Measurement With Units)............................................................................................	4-18
4-79	Talk Mode 2 (Talk Error) ...............................................................................................................................	4-18

i i

4-80	Talk Mode 3 (Talk Both Channels) ..............................................................................................................	4-18
4-81	Talk Mode 4 (Talk Channel Status) ................................................................................................................	4-19
4-82	Talk Mode 5 (Talk Instrument Status) .........................................................................................................	4-19
4-83	Talk Mode 6 (Talk Parameter) .......................................................................................................................	4-19
4-86	Talk Mode 7 (Talk Array)...............................................................................................................................	4-19
4-87 IEEE-488 Bus Only Commands ..................................................................................................................................		4-20
4-88	General.................................................................................................................................................................	4-20
4-89	Talk Mode (TM) Command ..............................................................................................................................	4-20
4-90	SI Command ........................................................................................................................................................	4-20
4-94	SO Command ......................................................................................................................................................	4-21
4-98	FI Command ......................................................................................................................................................	4-21
4-102	FO Command ....................................................................................................................................................	4-21
4-107	DF Command ....................................................................................................................................................	4-22
4-108	DN Command ....................................................................................................................................................	4-22
4 - 109	SM (SRQ Mask) Command ...........................................................................................................................	4-22
4-110 Measured and Triggered Operation And Settled Reading .................................................................................		4-22
4-111	General................................................................................................................................................................	4-22
4 - 112	Measure Normal (MN) ...................................................................................................................................	4-23
4-113	Measure Filtered (MF) ......................................................................................................................................	4-23
4-114	Measure Settled (MS) .......................................................................................................................................	4-23
4-115	Measure Fast Single (MFS) ............................................................................................................................	4-23
4-116	Measure Fast Dual (MFD) ..............................................................................................................................	4-23
4-117	Trigger Normal (TN) .......................................................................................................................................	4-23
4-118	Trigger Filtered (TF) ........................................................................................................................................	4-23
4-119	Trigger Settled (TS) .........................................................................................................................................	4-23
4-120	Trigger Fast Single (TFS) ...............................................................................................................................	4-23
4-121	Trigger Fast Dual (TFD) .................................................................................................................................	4-23
4-122	IEEE Programming Examples .................................................................................................................................	4-23
4-125	Example 1...........................................................................................................................................................	4-23
4-126	Example 2...........................................................................................................................................................	4-24
4-127	Error Messages ............................................................................................................................................................	4-24
4-129	HP Bus Emulation ......................................................................................................................................................	4-24
4-131	Turn-on Default Conditions ............................................................................................................................	4-24
4 - 132	Sending the Data Message ............................................................................................................................	4-25
4-133	Data Output Format ..........................................................................................................................................	4-24
4-134	Sending the Require Service Message ..........................................................................................................	4-25
4-135	Service Request Mask ......................................................................................................................................	4-25
4-136	Sending the Service Request Mask Value ....................................................................................................	4-25
4-137	Event Status Register .......................................................................................................................................	4-25
4-138	HP Emulation Codes ..........................................................................................................................................	4-26
4-139 Remote Operation, RS-232 Interface ......................................................................................................................		4-26
4-140	General................................................................................................................................................................	4-26
4-141	Entering the Remote Mode .............................................................................................................................	4-26
4-142	Returning to Local Mode .................................................................................................................................	4-26
4-143	Talk Operations .................................................................................................................................................	4-26

iii

LIST OF FIGURES

Figures		Page
1 - 1	Model 4230A Series RF Powermeter ...................................................................................................................	v i
1-2	Outline Dimensions ...................................................................................................................................................	1-2
2-1	Packaging Diagram ....................................................................................................................................................	2-1
3-1	Model 4230A, Front Panel Controls and Connectors ............................................................................................	3-3
3-2	Model 4230A, Rear Panel Controls and Connectors .............................................................................................	3-3
3-3	Measurement Display, Local Mode .........................................................................................................................	3-5
3-4	Measurement Display, Remote Mode ......................................................................................................................	3-5
3-5	Model 4230A, Command Set .....................................................................................................................................	3-6
3-6	Main Menu Display ....................................................................................................................................................	3-7
3-7	Channels Menu Display .............................................................................................................................................	3-7
3-8	Setup Menu Display, IEEE Installed ........................................................................................................................	3-9
3-9	Setup Menu Display, RS-232 Installed ....................................................................................................................	3-10
3-10	IEEE Menu Display .....................................................................................................................................................	3-11
3-11	RS-232 Menu Display .................................................................................................................................................	3-12
3-12	Diagnostics Menu Display ........................................................................................................................................	3-13
3-13	Sensor Display Menu .................................................................................................................................................	3-13
3-14	Access Code ...............................................................................................................................................................	3-14
3-15	Edit Data Menu Display .............................................................................................................................................	3-14
3-16	Cal Factor Menu Display ...........................................................................................................................................	3-14
3-17	Calibration Data Example ............................................................................................................................................	3-16
3-18	Save Display ................................................................................................................................................................	3-17
3-19	Frequency Display ......................................................................................................................................................	3-17
3-20	Averaging Time Display ............................................................................................................................................	3-17
3-21	Zero and Calibration Display .....................................................................................................................................	3-17
3-22	Reference Level Display .............................................................................................................................................	3-17
4-1	14-Point Sensor Calibration .....................................................................................................................................	4-2
4-2	Diode Sensor Decay ...................................................................................................................................................	4-2
4-3	Thermal Sensor Decay ...............................................................................................................................................	4-3
4-4	Extended Hold Range Mode .....................................................................................................................................	4-4
4-5	Noise Reduction ..........................................................................................................................................................	4-6
4-6	Typical Error Band Specifications ..........................................................................................................................	4-7
4-7	Probability of Falling within an Error Band .........................................................................................................	4-7
4-8	Confidence Curves, 51013 Sensor with 2.8 Second Filter .................................................................................	4-8
4-9	Confidence Curves, 51013 Sensor with 10 Second Filter ..................................................................................	4-9
4-10	Integration of Power ...................................................................................................................................................	4-10
4-11	Fast Mode Sampling Rate .........................................................................................................................................	4-11
4-12	Mismatch Uncertainties Chart .................................................................................................................................	4-12
4-13	Error Due to AM Modulation (51013 Diode Sensor) ......................................................................................	4-13

iv

LIST OF TABLES

Table		Page
1 - 1	Performance Specifications ...................................................................................................................................	1 - 3
3 - 1	Operating Controls, Indicators, and Connectors ..............................................................................................	3 - 1
3-2	Channel Menu Functions ..........................................................................................................................................	3-8
3-3	Setup Menu Functions ..............................................................................................................................................	3-10
3-4	IEEE Menu Functions ................................................................................................................................................	3-11
3-5	RS-232 Menu Functions ............................................................................................................................................	3-12
3-6	Diagnostics Menu Functions ...................................................................................................................................	3-13
3-7	Edit Data Menu Functions ........................................................................................................................................	3-15
3-8	Sensor Calibration Menu Functions ........................................................................................................................	3-16
3-9	Reference Level Menu Functions ............................................................................................................................	3-18
4-1	Listen Parameter Commands ...................................................................................................................................	4-15
4-2	Listen Action Commands .........................................................................................................................................	4-16
4-3	Listen Array Parameter Commands........................................................................................................................	4-17
4-4	Talk Array Commands ..............................................................................................................................................	4-17
4-5	Talk Modes ..................................................................................................................................................................	4-17
4-6	Error Messages ...........................................................................................................................................................	4-20
4-7	SRQ Masks ..................................................................................................................................................................	4-22
4-8	Status Byte and Service Request Mask...................................................................................................................	4-25
4-9	Event Status Register.................................................................................................................................................	4-25
4-10	HP 437B Emulation GPIB Commands ..................................................................................................................	4-27
4-11	HP 438A Emulation GPIB Commands ..................................................................................................................	4-30
4-12	Boonton 4230A GPIB Commands .............................................................................................................................	4-32

v

Figure 1-1. Model 4230A Series RF Powermeter

vi

Section I

General Information

SECTION I

GENERAL INFORMATION

1-1. INTRODUCTION.

1-2. This instruction manual provides general information, installation and operating instructions, and application notes for the Model 4230A Series of RF power meters. This series includes Model 4231A with a single measurement channel and Model 4232A with two measurement channels. The terms Model 4230A and 4230A used throughout this publication refer to both models unless otherwise noted. See Figures 1-1 and 1-2.

1-3. DESCRIPTION.

1-4. The Model 4230A Series is a DSP (digital signal processor) based family of single or dual channel, solid state RF power meters. They are capable of measuring RF power levels from -70 dBm to +44 dBm. The RF frequency range and power level range are sensor dependent. Boonton 51000 series sensors provide measurement capabilities for frequencies from 10 kHz to 100 GHz.

1-5. FEATURES.

1-6. Power Sensors. A wide range of diode and thermocouple power sensors for both coaxial and waveguide applications are available for use with the Model 4230A. Sensor data adapters are supplied with the Model 4230A, however, the power sensor must be ordered separately.

1-7. Diode sensors measure the voltage across a precision resistor, using specially selected diodes. Detection is square law (true RMS) over approximately the lower two-thirds of the sensor's dynamic range, and peak detecting over the upper portion. Because the instrument is calibrated for sine waves over the entire range, measurements at the top one-third of the sensor's dynamic range are valid only for non-modulated signals. In the RMS region, linearity is excellent, and any signal type can be measured. The diode range has been extended into the peak detecting region with the use of real time shaping for the diode curve. When coupled with the high sensitivity of the diode, such shaping allows a dynamic range of 90 dB. Diode sensors are rugged and have an overload headroom of more than 5 dB for continuous signals. The dynamic range in the RMS region can be extended further through use of an external attenuator.

1-8. Thermal sensors measure the voltage developed across a dissimilar metal junction caused by the thermal gradient generated by the RF power being measured. Because these sensors are heat detecting, they provide true RMS response over their entire range. Very high peak powers (15 to 30 watts)

can be accommodated for very short duty cycles and still provide valid results. The dynamic range is 50 dB. Thermal sensors are not as sensitive as diode sensors.

1-9. The sensor data adapter contains non-volatile memory for storage of the calibration data. In addition, calibration data for up to four sensors can be stored in the instrument's nonvolatile memory. The user can enter both the linearity and high frequency sensor calibration correction data which are supplied with each sensor. For sensors ordered with the Model 4230A, the calibration data is loaded into the sensor data adapter prior to shipment. When the frequency of the RF signal to be measured by one of these sensors is entered, the instrument looks up the appropriate calibration factors, interpolates as necessary, and automatically applies the correction to the measured value. Calibration factors for sensors ordered with the instrument are stored in the plastic pouch attached to the inside of the instrument's top cover.

1-10. Simple Instrument Setup and Operation. In the operating mode the functions: Frequency, Averaging Time, Reference Level, Zeroing/Calibration are selected with a single keystroke. Values for these parameters are displayed and can be adjusted by using the arrow and enter keys. Additional operating parameters can be modified through the menu driven structure accessible via the <Menu> and <Sensor> keys.

1-11. Alphanumeric Display. The alphanumeric LCD provides clear, unambiguous readouts of the instrument's setup and measurement values. Simultaneous display of both channels is available in dual channel mode. A bar graph provides a display of the channel's measured value for nulling and peaking applications.

1-12. Selectable Ranging. Any of seven measurement ranges, or autoranging, can be selected during instrument setup. The selection will be held until it is changed, or until the instrument is turned off. When measuring signals with levels that fall within a narrow range, selecting one specific instrument range may reduce measurement time. Autoranging is useful if the RF signal level is unknown, or if RF signals with widely varying levels are to be measured.

1-13. Selectable Filtering. Measurement speed and display stability can be optimized through the use of selectable filtering. Filter times can be adjusted up to 20 seconds maximum in 50 millisecond increments.

1-14. Zeroing. Automatic zeroing (nulling of offsets for the

1-1

Section I

General Information

sensor and input channel) is done independently on each range to eliminate zero carryovers.

1-15. Built-In Precision Calibrator. A built-in 50 MHz calibrator provides an accurate, stable, and convenient power source for calibration of the instrument to specified tolerances. The calibrator may be toggled on or off from the Setup menu. The connector is normally mounted for front panel access, however option-02 changes this to rear panel access.

1-16. Chart Recorder Output. A 0 to 10 volt dc output, proportional to the measurement values, is available for application to a chart recorder.

1-17. Optional Interface. A RS-232 option enables full service remote control of the Model 4230A. All instrument controls and values, except power on and off, are accessible to a bus controller in the remote operating mode.

1-18. ACCESSORIES.

1-19. A sensor data adapter, Model 95109001A, for each installed channel and an AC line cord are supplied with each instrument. One or more Boonton 51000 series power sensors are required. The power sensors are not supplied as part of the instrument, but must be ordered separately. A five-foot power sensor cable, Model 41-2A, is supplied with each sensor ordered. Additional available accessories include the following:

a. Model 41-2A/10 Sensor/Probe Interconnecting Cable (10 ft)

b.Model 41-2A/20 Sensor/Probe Interconnecting Cable (20 ft)

c.Model 41-2A/50 Sensor/Probe Interconnecting Cable (50 ft)

d.Model 41-2A/100 Sensor/Probe Interconnecting Cable (100 ft)

e.Model 95004701A F/F Adapter, 41-2A (for connecting Model 41-2A cables end to end)

f.Model 95004901A Bulkhead Connector F/F, 41-2A (for connecting Model 41-2A cables end to end)

g.Model 95403001A Rack Mounting Kit

h.Model 95109001A Additional Sensor Data Adapters

1-20. OPTIONS.

1-21. Option-01. Input connectors moved to rear panel.

1-22. Option-02. Calibrator type N connector moved to rear panel.

1-23. Option-03. Replaces the IEEE-488 Interface with a RS232 Interface. The baud rate, data size, stop and parity bits are programmable.

1-24. Option-30. Warranty extended to 3 years.

1-25. SPECIFICATIONS. Performance specifications of the Model 4230A are listed in Table 1-1.

Figure 1-2. Outline Dimensions.

1-2

Section I

TABLE 1-1. PERFORMANCE SPECIFICATIONS		General Information
Parameter	Specification
Frequency Range	10 kHz to 100 GHz, sensor dependent
Power Range	-70 dBm to +44 dBm, sensor dependent
Power Sensors	Accepts sensor data adapter and is compatible with all Boonton diode and
	thermal sensors
Dynamic Range	Up to 90 dB with diode sensors; up to 50 dB with thermal sensors
Inputs	Front or Rear panel sensor connector; rear panel IEEE-488 connector or
	optional RS-232 connector
Outputs	Front panel or optional Rear panel PWR REF connector, 50 MHz, 0 dBm;
	rear panel recorder BNC connector, 9.06 kilohm impedance, 0 to 10 volts
	into 1 megohm (may be operated into 1 kilohm for 1V fs).
Display	Menu-driven 20 character x 4 line LCD
Display Units	MW, kW, W, mW, μW, nW, dBm, dBr, %
Display Resolution	0.001 (db,dBm, dBr) or 5 digits (nW, mW and W)
Display Offset	-99.99 dB to +99.99 dB in 0.01 dB steps
Alarm	Individual high and low limit thresholds, -99.99 dB to +99.99 dB
Peak Power Mode	Programmable duty cycle from 0.01 to 100.00% in 0.01 steps
Ranging	Autoranging or manual (7 ranges)
Filtering	Filter times to 20.00 seconds in 0.05 second increments
Zeroing	Automatic function; calculates, stores, and applies zero corrections to each
	range
High Frequency Cal Factors	+3 dB to -3 dB in 0.01 dB steps; cal factors for up to four power sensors
	with up to 60 frequencies each may be stored in the instrument's non-
	volatile memory; cal factors also stored in sensor data adapter
Reference Level	-99.99 dB to +99.99 dB in 0.01 dB steps for dBr measurements
Power Reference:
Frequency	50 MHz + 1.5%
Output Level	0 dBm
Level Accuracy	+0.7% (+0.03 dB) (23 degrees C) for 90 days; +0.9% (+0.04 dB) RSS,
	+1.2% (+0.05 dB) worst case (0 to 55 degrees C) for 1 year
Source Impedance	50 +1 ohm
VSWR	< 1.05
Harmonic Output	< -50 dBc
Measurement Accuracy	Sum of following uncertainties (errors are + worst case): instrument
	uncertainty, noise/signal percentage, power reference uncertainty, sensor
	shaping, temperature drift, mismatch, and high frequency calibration factors
Instrument Uncertainty	.002% at full scale
Noise/signal Percentage	Refer to Power Sensor Manual, Table 2-1
Power Reference Uncertainty	Refer to Table 1-1 Power Reference: Level Accuracy and for Waveguide
	sensors, refer to Power Sensor Manual, Table 2-2 Note 2
Sensor Shaping	Refer to Power Sensor Manual, Tables 3-1 and 3-2
Temperature Drift	Refer to Power Sensor Manual, Table 2-1
Power Requirements	100, 120, 220, or 240 VAC (±10%), 50-60 Hz or 400 Hz, 15 VA maximum
Ventilation Requirements	1 1/2" clearance after installation, top, side, rear
Temperature
Operating	0 to 55ºC
Non-operating	-40 - +75ºC

1-3

Section I

General Information

		TABLE 1-1. PERFORMANCE SPECIFICATIONS (CONT.)
	Parameter		Specification
	Altitude
	Operating		10,000 ft.
	CE Mark:		Declares conformity to European Community (EC) Council Directives:
			89/336/EEC//93/68/EEC, 73/23/EEC//93/68/
			EEC & Standards: EN61326-1, EN55022, EN61000-4/ -2,3,4,5,6,11, ENG1010-1
	Humidity		95% non-condensing
	Weight		7 lb (3.2 kg)
	Dimensions		8.26 in. (21.0 cm) wide 3.48 in. (8.9 cm) high, 13.5 in (34.3 cm) deep

1-4

Section II

Installation

SECTION II

INSTALLATION

2-1. INTRODUCTION.

This section contains the installation instructions for the Model 4230A Series RF Power Meter. It includes unpacking, mounting, power connections, cable connections and priliminary checkout procedures.

2-2. UNPACKING. The instrument is shipped complete and ready to use upon receipt. Unpack the instrument from its shipping container and inspect it for damage that may have occurred during shipment. Refer to figure 2-1.

NOTE

Save the packing material and container for possible use in re-shipment of the instrument.

2-3. MOUNTING. For bench use, choose a clean, dry and uncluttered surface. For rack mounting, an accessory kit is available which contains the necessary parts for mounting a single half-width Model 4230A or two side-by-side halfwidth Model 4230A's (or a compatible product) in a single 19 inch rack.

2-4. POWER REQUIREMENTS. The Model 4230A has a tapped transformer and a power entry module containing a line voltage selector switch and two fuses. Operation is permitted from 100, 120, 220 and 240 Volt +-10%, 50 to 60 Hz, single phase AC power supplies.

CAUTION

Always make cerain that the setting of the line voltage selector switch most nearly corresponds to the voltage of the AC power source, and that fuses of the correct rating according to the chart just above the power entry module, are installed.

To change the line voltage selector switch or the fuses, follow this procedure:

1.REMOVE the power cable from the power entry module.

2.To open the power entry module, place a small screwdriver or coin in the slot at the top of the module and gently pry the cover open.

3.Using a small screwdriver gently pry the voltage selector cylinder from the module. Turn the cylinder

so that when it is re-inserted into the module, the desired voltage will appear in the small window in the cover.

4. To remove the fuses, move the fuseholder tabs in the direction of the arrow and pull the holder out. Place a new fuse in the holder and put it back in the slot, restoring the tab to its original position.

5. After all changes are completed, close the cover. Make sure the alignment of the selector cylinder and window is correct and that the cover snaps into place.

VOLTAGE	FUSE	IEC TYPE
100/120V	0.315A	T
220/240V	0.160A	T

2-5. CONNECTIONS. An AC power cable is supplied with the instrument and a standard interconnecting cable or cable/ adapter combination is supplied with each RF Sensor. Longer RF Sensor cables are available as accessories. All other cables required must be supplied by the user.

2-6. Sensor. Connect the RF Sensor that is to be used for measurement to the cable or Data Adapter-Cable combo supplied with the sensor. If the Data Adapter is a separate item, also connect the cable to the adapter. Make sure that the serial number on the Data Adapter matches the serial number of the RF Sensor. Insert the 10-pin adapter plug into one of the two sensor inputs. For Model 4231, only Sensor input number 1 is active.

2-7. Recorder. A data recorder or other similar device can be connected to the Recorder BNC connector on the rear panel. The output is a DC voltage proportional to the Channel 1 display value. The voltage range is 0 to 10 volts with an output impedance of approximately 9 kohms.

2-8. GPIB. The standard instrument is equipped with an IEEE-488 bus interface for remote operation. The connector is located on the rear panel.

2-9. RS-232. The optional RS-232 interface can be supplied in place of the standard IEEE-488 interface. This interface also provides remote operation using the same command strings. The DB-25 connector is located on the rear panel.

2-1

Section II

Installation

2-10. PRELIMINARY CHECK.

2-11. The following preliminary check verifies that the Model 4230A is operational. It should be performed before the instrument is placed in service. Proceed as follows:

a.Ensure that the voltage selector switch and fuses correspond to the AC power source voltage to be used.

b.Connect the AC power cable to the instrument and to the power source.

c.Connect one or two RF Sensors to the instrument as described above.

d.Set the front panel OFF/ON power switch to the ON position..

e. Verify that	BOONTON ELECTRONICS
	423XA RF POWER METER
	Rev. X.XX

is momentarily displayed.

f.Verify that the measurement display showing "CH 1" only for Model 4231 or "CH 1" and "CH 2" for Model 4232. Other data on the display will depend upon previous settings.

g.Press the <MENU> key and select DIAGNOSTICS with the down arrow key. Press <ENTER>. Verify the following submenu:

DIAGNOSTICS

RTN

SELFTEST <

SWITCHES

RECORDER

h. Press <ENTER> to execute the selftest. The items tested are:

1.Processor

2.SRAM Memory

3.EEPROM

Each test will display the OK message it it passed. When the test is completed the menu will reappear.

i. Use the <Down Arrow> key to move the "<" cursor to SWITCHES and press <ENTER>. Press each front panel key, avoiding <MENU> until last. Each key press will result in an identifying message; <MENU> will exit the test and return to the MENU.

j.Use the <Down Arrow> key to select RECORDER and press <ENTER>. This test will sequentially send a DC voltage in 1 volt steps to the recorder output BNC connector on the rear panel. The test will continue until <MENU> is pressed. Use a DC voltmeter to verify correct operation.

k.Press <MENU> to return to the measurement display.

l.Press the <Sensor> key and verify that the RF Sensor serial number(s) appear under the channel heading(s). An active channel with no sensor installed will report a table number.

m.Press the <AVG> key and verify that the filter time and number of samples appear for each active channel.

n.Press the <REF Level> key and verify that a reference level and mode is shown for each active channel.

o.With each installed sensor connected to the reference output, press the <ZERO/CAL> key and select ZERO/CAL function for the active channel. Verify the ZERO/CAL operation completes successfully. Repeat this operation for the other channel if installed.

p.For standard instruments equipped with the IEEE-488 interface, connect a GPIB controller to the Model 4230A. Verify that the instrument can be addressed to Listen at its IEEE bus address, and set to Remote. The display must show the correct status on the bottom line of the display. For message passing, the line terminators for the controller and the Model 4230A must be compatible for both Listen and Talk. Use <MAIN> <SETUP> <IEEE> to set address and terminators for the 4230A. Address the Model 4230A to Listen/Remote and send the command "?ID" or "*IDN?" EOL. Then address the Model 4230A to Talk (controller to listen) and verify that the correct identification string is returned.

q.For instruments equipped with the optional RS-232 interface, connect a dumb terminal or PC serial terminal to the Model 4230A. Use a null modem if the terminal is wired as DCE. For message communication to take place, the parameters of the serial connection and message strings must agree between the terminal and the Model 4230A. Use <MAIN> <SETUP> <RS-232> to set parameters for the 4230A. Send the command "?ID" or "*IDN?" EOL and verify that the correct identification string is returned.

2-2

Section II

Installation

Figure 2-1. Packing and Unpacking Diagram

2-3

Section III

Operation

SECTION III

OPERATION

3-1. INTRODUCTION.

3-2. This section contains operating instructions for the Model 4230A. It is strongly recommended that the operator become familiar with all the material in this section and with the application notes in Section IV before attempting to operate the instrument; otherwise, the full capabilities of the instrument may not be realized.

3-3. OPERATING CONTROLS, INDICATORS, AND CONNECTORS.

3-4. See Figures 3-1 and 3-2 for the location of the operating controls and connectors. Refer to Table 3-1 for the function of each of these items.

3-5. OPERATING THE INSTRUMENT.

3-6. Energize the instrument by setting the POWER switch to the ON position. The instrument will perform a self test routine and initialize the operating parameters to the powerup values.

3-7. MEASUREMENT DISPLAY.

3-8. The measurement screen shown in Figure 3-3 can be configured to display one or two channels along with the corresponding bar graph. In alarm mode, the and the symbols are displayed before the channel mode to indicate that the measured value is above or below the defined limits. An asterisk is displayed before the channel mode when in the manual range mode and the measured value is below the lower range limit indicating an uncalibrated measurement. The alarm indicators have precedence over the range limit display. In peak pulse mode, the P K symbol is displayed after the measurement unit. The symbol is displayed when the measurement is associated with an offset. When the instrument is configured for remote operations over the IEEE-488 or RS-232 bus, the last line, as shown in Figure 3- 4, is always used for the bus indicators.

3-9. MENU STRUCTURE.

TABLE 3-1. OPERATING CONTROLS, INDICATORS, AND CONNECTORS

Index and
Fig. No.	Nomenclature	Function
1, 3-1	Sensor Connector, Channel 2	Provides the means for connecting the power sensor to channel 2
		of the instrument.
2 , 3-1	Sensor Connector, Channel 1	Provides the means for connecting the power sensor to channel 1
		of the instrument.
3 , 3-1	Display	LCD readout of the measurements and user interface for editing
		of the instrument's operating parameters.
4 , 3-1	Left Arrow Key	In entry mode, advances the cursor to the left.
5 , 3-1	Up Arrow Key	In entry mode, advances the cursor upwards. In parameter entry
		mode, scrolls forward through the parameter list. In numerical
		entry mode, advances the value to the next higher digit.
6 , 3-1	Enter Key	In entry mode, initiates the procedure to change a parameter. In
		parameter entry mode, terminates the current command and
		changes the parameter to the last displayed value.
7 , 3-1	Right Arrow Key	In entry mode, advances the cursor to the right.
8 , 3-1	Down Arrow Key	In entry mode, advances the cursor downwards. In parameter
		entry mode, scrolls backwards through the parameter list. In
		numerical entry mode, advances the value to the next lower digit.
9 , 3-1	Power Switch	Turns the instrument off and on.
10, 3-1	0 dBm 50 MHz Connector	Provides a 50 MHz, 0 dBm output for instrument calibration.
		When the calibrator is off, the connector serves as a 50 Ω
		termination to zero the instrument.

3-1

Section III

Operation

TABLE 3-1. OPERATING CONTROLS, INDICATORS, AND CONNECTORS (CONT)

Index and
Fig. No.		Nomenclature			Function
11,	3-1	<REF Level> Key			Selects the reference level menu for relative measurements.
12,	3-1	<Zero/CAL> Key			Selects the zeroing and 0 dBm reference level calibration
					functions.
13, 3-1		<AVG> Key			Selects the filter averaging display for the measurement value.
14, 3-1		<FREQ> Key			Selects the operating frequency display.
15, 3-1		<Sensor> Key			Displays the serial number of the installed sensors and allows
					for editing of the sensor parameters.
16, 3-1		<Menu> Key			Displays and allows editing of the instrument's operating
					parameters. Returns instrument to local mode when operating
					in the bus remote mode. Escapes back to measurement screen
					from any menu.
17, 3-2		Power Receptacle			Provides means for connecting the AC power cord to the
					instrument.
18, 3-2		Fuse			Protects the power circuits from overload.
19, 3-2		Voltage Selector Switches			Switches the power circuits of the instrument to accommodate
					100, 120, 220 or 240 volt AC power sources.
20,	3-2	Recorder Connector			Provides a DC voltage proportional to the measured values
					for use by an external recorder
21,	3-2	GPIB Connector			Provides means for connecting the instrument to the IEEE-
		or RS-232 Connector			488 or RS-232 bus for remote control
22,	3-2	Optional Location of			Provides the means of connecting the power sensor to
		Sensor Connector,	Channel	2	channel 2 of the instrument.
23,	3-2	Optional Location of			Provides 50 MHz, 0 dBm output for instrument calibration.
		0 dBm 50 MHz Connector
24,	3-2	Optional Location of			Provides the means of connecting the power sensor to
		Sensor Connector,	Channel	1	channel 1 of the instrument.

3-2

Section III

Operation

Figure 3-1. Model 4230A, Front Panel Controls and Connectors

Figure 3-2. Model 4230A, Rear Panel Controls and Connectors

3-3

Section III

Operation

3-10. The Model 4230A can be configured for operation via the six switches on the front panel; <Menu>, <Sensor>, <FREQ>, <AVG>, <Zero/CAL> and <REF Level>. Pressing a key will bring the instrument to the next submenu. A flow chart of the instrument's command structure is shown in Figure 3-5. The <Menu> key also serves as an ESCAPE key to cancel the current operation from any point and return to the measurement screen.

3-11. To change a value, use the arrow keys to position the cursor to the desired parameter. Press the <Enter> key and then use the up/down arrow keys to scroll through the parameter list. When a number is to be entered, use the left/ right arrow keys to position the cursor under the number that is to be changed, then use the up/down arrow keys to increment/decrement the number. Holding the up/down

arrow key will initiate repeat mode to allow rapid movement through the selections. The <Enter> key must be pressed to accept the current selection.

3-12. Within a submenu, the indicators are displayed in the upper right portion of the display when the current screen has additional information that can be obtained by scrolling with the up/down arrow keys. Three conditions are possible:

a. Use the up arrow key to scroll the screen upward for additional information.

b. Use the down arrow key to scroll the screen downward for additional information.

c. Use the up/down arrow keys to scroll the screen upward/downward for additional information.

3-4

Section III

Operation

DUAL CHANNEL

L

M

M

M

M

M

±

D

D

D

D

D

D

U

U

U

P

K

(

B

A

R

G

R

A

P

H

)

L

M

M

M

M

M

±

D

D

D

D

D

D

U

U

U

P

K

(

B

A

R

G

R

A

P

H

)

SINGLE CHANNEL

L

M

M

M

M

M

±

D

D

D

D

D

D

U

U

U

P

K

(

B

A

R

G

R

A

P

H

)

Key:	O	=	0 through 9 or a decimal point
	L	=	, , (alarm mode), * (range hold-low)
	MMMMM	=	CH1, CH2, CH1+2, CH1/2
	UUU	=	nW, µW, mW, kW, MW, dBm, dBr, %
			Figure 3-3. Measurement Display, Local Mode

L

M

M

M

M

M

±

D

D

D

D

D

D

U

U

U

P

K

(

B

A

R

G

R

A

P

H

)

L

M

M

M

M

M

±

D

D

D

D

D

D

U

U

U

P

K

R

E

M

L

S

N

T

L

K

S

R

Q

Key: REM

=

Remote mode enabled

LSN

=

Listen addressed

TLK

=

Talker addressed

SRQ

=

Service request activated

Figure 3-4. Measurement Display, Remote Mode

3-5