Hameg HM5010-5011 Spectrum Analyzer - Service manual.pdf

(5075 KB) Pobierz

SERVICE-MANUAL HM5011/5010

ENGLISH

4S-5010-0010

09 JUN 1998

Instruments

Spectrum

analyzer

HM5011

HM5010

Service Manual

Adjustment Procedure

Circuit Diagrams

Alignment Procedure for HM5010/HM 5011 .........

A Control and Adjustment of

Supply Voltages ...............................................

B Final Alignment - Tuner .....................................

C Alignment - IF-Unit ...........................................

D Linearity of Frequency Display .........................

HM5010 XY-board ...........................................

Tuner ...............................................................

Tracking-Generator ..........................................

E Alignment of HM5011 Tracking Generator ......

Tracking-Generator .................................................

Tuner RA-Board ......................................................

Tuner RB-Board ......................................................

IF-Amplifier .............................................................

Main board .............................................................

X-Y Board ...............................................................

FC-Board ................................................................

PA-Board ................................................................

CRT-Board ..............................................................

Power supply Board ...............................................

RA-Board ................................................................

Tracking-Generator .................................................

RB-Board ................................................................

Main board .............................................................

XY-Board .................................................................

FC-Board ................................................................

PA-Board ................................................................

CRT-Board ..............................................................

PS-Board ................................................................

Block Diagram HM5010/HM5011 ..........................

Subject to change without notice

HM5010/5011

SPECTRUM ANALYZER

Specifications

Frequency

Frequency range:

0.15MHz to 1050MHz (-3dB)

Center frequency display accuracy:

±100kHz

Marker accuracy:

±(0.1% span + 100kHz)

Frequency display res.:

100kHz (4�½ digit LED)

Frequency scanwidth:

100kHz/div. to 100MHz/div.

in 1-2-5 steps and 0Hz/div. (Zero Scan)

Frequency scanwidth accuracy: ±10%

Frequency stability:

better than 150kHz / hour

IF Bandwidth (-3dB):

Resolution: 400kHz and

20kHz; Video-Filter on: 4kHz

Sweep rate:

43Hz

Amplitude

Amplitude range:

-100dBm to +13dBm

Screen display range:

80dB (10dB / div.)

Reference level:

-27dBm to +13dBm

(in 10dB steps)

Reference level accuracy:

±2dB

Average noise level:

-99dBm (20kHz BW)

Distortion:

<-75dBc; 2nd and 3rd harmonic

3rd order intermod.: -70dBc

(two signals >3MHz apart)

Sensitivity:

<5dB above average noise level

Log scale fidelity:

±2dB (without attn.) Ref.: 250MHz

IF gain:

10dB adjustment range

Spectrum Analyzer HM5010 / HM5011

Frequency Range 0.15MHz - 1050MHz.

4�½ Digit Display (Center & Marker Frequency, 0.1MHz resolution)

–100 to +13dBm Amplitude Range, 20kHz, 400kHz and Video-Filter

Tracking-Generator (HM5011 only):

Frequency range: 0.15MHz - 1050MHz.

Output Voltage: +1dBm to –50dBm (50Ω).

Ω

Evolution of the original HM5005/HM5006 has led to the

new HM5010/

HM5011 Spectrum Analyzer/Tracking Generator

which now extends

operation

over 1 GHz

(frequency range 0.15 to 1050 MHz). Both fine and

coarse center frequency controls, combined with a scanwidth selector

provide simple frequency domain measurements from 100 kHz/div. to 100

MHz/Div.. Both models include a

4�½digit

numeric

LED readout

that can

selectively display either the center or marker frequency. The

HM5011

includes a

tracking generator.

The

HM5010/5011

offer the same operation modes as the HM5005/5006.

The instruments are suitable for pre-compliance testing during development

prior to third party testing. A near-field sniffer probe set,

HZ530,

can be used

to locate cable and PC board emission "hot spots" and evaluate

EMC problems

at the breadboard and prototype level. The combination of

HM5010 / 5011

with

the

HZ530

is an excellent solution for RF leakage/radiation detection,

CATV/

MATV

system troubleshooting, cellular telephone/pocket pager test and

EMC

diagnostics. There is an optional measurement output for a PC which makes

documentation of results easy and affordable with the

HO500 Interface.

Input

Input impedance:

50Ω

Input connector:

BNC

Input attenuator:

0 to 40 dB (4 x 10dB steps)

Input attenuator accuracy:

±1dB/10dB step

Max. input level:

+10dBm, ±25V

(0dB attenuation)

+20dBm (40dB attenuation)

Tracking Generator

Output level range:

-50dBm to +1dBm

(in 10dB steps and var.)

Output attenuator:

0 to 40dB (4 x 10dB steps)

Output attenuator accuracy:

±1dB

Output impedance:

50Ω (BNC)

Frequency range:

0.15MHz to 1050MHz

Frequency response:

±1.5dB

Radio Frequency Interference (RFI):

<20dBc

Divers

AM-Demodulator output for head-sets.

Permissible load impedance >8Ω

General

Display:

CRT. 6 inch, 8 x 10 div. intern. graticule

Trace rotation:

Adjustable on front panel

Line voltage:

115 / 230V ±10%, 50-60Hz

Power consumption:

approx. 20W

Operating ambient temperature:

0°C..+40°C

Protective system:

Safety Class I (IEC 1010-1)

Weight:

approx. 7kg

Cabinet:

W 285, H 125, D 380 mm

Subject to change without notice

5/96

Accessories supplied: Line Cord, Operators Manual. Optional accessories, 50Ω-feedthrough termination HZ22

Ω

Viewing Hood HZ47, Near Field Probe Set HZ530, Carrying Case HZ96-2, Transient Limiter HZ560

HO500 Computer Interface for HAMEG Spectrum Analyzer

This

HO500

computer interface offers the facility to transfer a calibrated frequency

spectrum from any

HAMEG spectrum analyzer

to a PC. The

HO500 interface

is a

8 bit

ISA BUS card

installed in the

PC,

which transfers data via an interface cable.

The software supplied allows a hard copy print out (including parameters) of the

frequency spectrum, in

Windows Format.

Signal aquisition occurs

2 to 3

times

per

second.

The picture consists of 10 bit vertical by approx 3600 point horizontal display. The PC

monitor display is in

SVGA

Format with 800 x 600 pixels. For comparison

measurements, a previosly stored reference curve can be recalled. The software

supplied works under Windows 3.1, 3.11 and WIN95. A simple XY analog output is

required to connect the

HO500

to the spectrum analyzer.

Subject to change without notice

EMC-MEASUREMENT EQUIPMENT

Specifications

Frequency

Frequency range:

0.1MHz to 1000MHz

(lower frequency limit

depends on probe type)

Output impedance:

Ω

Output connector:

BNC-jack

Input capacitance:

2pF

(high imped. probe)

Max. Input Level:

+10dBm

(without destruction)

1dB-compression point:

-2dBm

(frequency range dependent)

DC-input voltage:

20V max.

Supply Voltage:

6V DC

4 AA size batteries

Supply-power of HM5010/5011

8mA (H-Field Probe)

15mA (E-FieldProbe)

24mA(High imp.Probe)

Probe Dimensions:

40x19x195mm (WxDxL)

Housing:

Plastic; (electrically

shielded internally)

Package contents:

Carrying case

1 H-Field Probe

1 E-Field Probe

1 High Impedance Probe

1 BNC cable (1.5m)

1 Power Supply Cable

(Batteries or Ni-Cads are not included)

Supply Current:

Near Field Sniffer Probes HZ 530

The HZ530 is the ideal toolkit for the

investigation of

RF electromagnetic

fields.

It is indispensable for

EMI pre-

compliance testing

during product

development,

prior to third party

testing.

The set

includes 3 hand-held probes

with a built-in pre-amplifier covering the

frequency range from

100kHz

to over

1000

MHz.

The probes - one

magnetic field

probe,

one

electric field

probe, and one

high

impedance

probe - are all matched to the

50Ω inputs of

spectrum analyzers or RF-

receivers.

The power can be supplied

either from batteries, Ni-Cads or through a

power cord directly connected to an

HM5010/HM5011 series spectrum

analyzer.

Signal feed is via a 1.5m BNC-cable.

When used in conjuction with a spectrum

analyzer or a measuring receiver, the

probes can be used to locate and

qualify

EMI sources,

as well as evaluate EMC

problems at the

breadboard

and

prototype level.

They enable the user to

evaluate radiated fields and perform

shield

effectiveness comparisons.

Mechanical

screening performance and immunity tests

on cables and components are easily

performed.

the connected measurement system which

is proportional to the magnetic radio

frequency (RF) field strength existing at the

probe location. With this probe, circuit RF

sources may be localized in close proximity

of each other. The H-field will decrease as

the cube of the distance from the source. A

doubling of the distance will reduce the H-

field by a factor of eight (H = 1/d³); where d

is the distance.

In the actual use of the H-field sensor one

observes therefore a rapid increase of the

probe’s output voltage as the interference

source is approached. While investigating a

circuit board, the sources are immediately

obvious. It is easily noticed which component

(i.e. IC) causes interference and which does

not. In addition, by use of a spectrum analyzer,

the maximum amplitude as a function of

frequency is easily identified. Therefore, one

can eliminate early in the development com-

ponents which are not suitable for EMC

purposes. The effectiveness of countermeas-

ures can be judged easily. One can inves-

tigate shields for "leaking" areas and cables

or wires for conducted interference.

(near the insulation resistance of the printed

circuit material) and is loading the test point

with only 2 pF (80Ω at 1 GHz). Thereby one

can measure directly in a circuit without

significantly influencing the relationships in

the circuit with the probe.

One can, for example, measure the quan-

titative effectiveness of filters or other

blocking measures. Individual pins of ICs can

be identified as RFI sources. On printed

circuit boards, individual problem tracks can

be identified. With this Hi-Z probe individual

test points of a circuit can be connected to

the 50Ω impedance of a spectrum analyzer.

The E-Field Monopole Probe

The E-field monopole probe has the

highest sensitivity of the three probes. It is

sensitive enough to be used as an antenna

for radio or TV reception. With this probe the

entire radiation from a circuit or an equipment

can be measured. It is used, to determine the

effectiveness of shielding measures. With

this probe, the entire effectiveness of filters

can be measured by measuring the RFI which

is conducted along cables that leave the equip-

ment and may influence the total radiation.

In addition, the E-field probe may be used

to perform relative measurements for certi-

fication tests. This makes it possible to apply

remedial suppresion measures so that any re-

qualification results will be positive. In addition,

pre-testing for certification tests may be per-

formed so that no surprises are encountered

during the certification tests.

SCALE = 10dB/DIV.

The High-Impedance Probe

The high-impedance probe (Hi-Z) permits

the determination of the radio frequency

interference (RFI) on individual contacts or

printed circuit traces. It is a direct-contact

probe. The probe is of very high impedance

The H-Field Near-Field Probe

The H-Field probe provides a voltage to

SCALE = 10dB/DIV.

Frequency Response E-Field Probe (typical)

SCALE = 10dB/DIV.

Frequency Response H-Field Probe (typical)

Frequency Response High Impedance Probe

(typical)

Subject to change without notice

Alignment Procedure for HM5010/HM 5011

Attention! The opening of covers or removal of parts is likely to expose live parts and accessible terminals

which can be dangerous to life. Maintenance, service and alignment should be carried out by qualified

personnel only, which is acquainted with the danger involved.

When aligning the HM5010/5011 it is assumed that all sub-assemblies of the instrument are completely pretested and

working correctly. The tuner, IF-unit, and tracking generator should be pre-aligned. When aligning a HM5010, a separate

tracking generator unit must be available and connected to the HM5010 for some specific adjustments.

Prior to the alignment procedure, the instrument must warm up for 60 minutes.

All adjustments are carried out by means of a plastic screw driver or a ceramic adjustment tool.

The alignment is divided into the following steps:

A Checking of supply voltages

D Linearity alignment

B Alignment of the tuner

E Tracking generator alignment

C Alignment of the IF-unit

F Check of overall adjustment

The numbering system is related to the respective pictures. Screen shots are designated as PIC

1 HF-Synthesizer 100 kHz to 1000 MHz, i.e. HM 8133

2 BNC cable, BNC T-connector, 2 x 10dB attenuator 50

Ohm

1 Voltmeter i.e. HM 8011-3

Control and Adjustment of Supply Voltages

12V to an accuracy of ±0.1V

via

Trimpot 4 PIC 1

minimum brightness

via

Trimpot 2 PIC 1

maximum brightness

via

Trimpot 3 PIC 1

astigmatism

via

Trimpot 1 PIC 1

– 12V

+12V

+5V

–5V

+38V

+138V

tolerance ± 0.2V

tolerance ± 0.1V

tolerance ± 0.2V

tolerance ± 1V

adjust:

check:

The corresponding voltage test points to check direct voltage can

be measured at the measuring connector strip (see PIC 2).

Basic adjustment:

When Y-pos. knob is snapped in on front board, adjust beam

approx. 2 mm below bottom graticule line via R801.

+138V

+38V

GND

+5V

+12V

-12V

PIC 2. XYF-Board (partial)

PIC 1. PS-Board

Instrument Rear Side

CRT-Board

Subject to change without notice

Plik z chomika:

ciasteczkowypotwornie

Inne pliki z tego folderu:

hameg_hm203-6_oscilloscope_sch.pdf (19893 KB)
hm1005.pdf (11718 KB)
407-2.pdf (7009 KB)
Hameg_HM604-2_Bedienung_und_Service.pdf (6996 KB)
Hameg HM5010-5011 Spectrum Analyzer - Service manual.pdf (5075 KB)

Hameg HM5010-5011 Spectrum Analyzer - Service manual.pdf

Plik z chomika:

Inne pliki z tego folderu:

Inne foldery tego chomika: