Hameg HM5014-2 Service Manual

6
Subject to change without notice
1. Basics
1. Basics
1.1 Block Diagram and Functional Description
10 wire ribbon cable RiC11
fi x e d
SMB
fi x e d
SMB
fi x e d fi x e d
CiC1 CiC2
WiC6 WiC8
WiC5
Probe
Power
6 wire ribbon cable RiC7
10 wire Ribbon Cable
SMB
4
wire
Part of RiC9
RiC13
direct
AC Socket
RiC9
16 wire Ribbon Cable RiC6
Part of RiC5/RiC6
10 wire Ribbon Cable RiC4
CiC8
6
wire
RiC10
4 WiC2
6 wire ribbon cable RiC2
WiC4
6
wire
RiC12
10 wire ribbon cable RiC5
CiC3
SMB
CiC4
direct
SMB
SMB
CiC5
CiC7
WiC3
SMB
fi x e d
SMB
SiC2
HM5014-2 - 1 GHz Spectrum Analyzer Block diagram
SMB
RF Attenuator
10 / 20 / 10 dB
Low Pass
SMA
1st Mixer
1369,3 MHz
6
2nd
Mixer
3rd
Mixer
1 MHz
1st LO
2nd
LO
3rd LO
DC
Offset
Control Logic
Keyboard
Controller
Audio-Ampl.
Probe Power
Supply
Switchmode Power Supply –12 V +5 V +32 V –2000 V +12 V +141 V
TG-LO
1369.3 MHz
Gain
Control
PLL
TG-LO
Ampl.
REF.
PLL
1st LO
PLL
2nd LO
TG-Mixer
CRT
RAT- Board
SiC1
CAVITY-
Filter
IF Amp.
Oscillator
1369,3 - 2419,3 MHz
1
ATD - Board
Attenuator
Driver
KEY- Board ATD - Board
Attenuator
Driver
RAT- Board
TG Attenuator
10 / 20 / 10 dB
Ampl.
LP
TG- Board
4
RFA- Board
RFB- Board
Low Pass
Oscil-
lator
2nd IF
Ampl.
RFC- Board
LP 30 MHz
LP 10,7 MHz
IFA- Board
2
3
LIN
LOG
Video Filter
120
kHz
9
kHz
CPU- Board
D
A
D
A
A
D
TCXO
Reference
96 MHz
2
2
48 MHz
DDS
16 – 28
MHz
Digital
Sweep
Generator
Main
CPU
RAM EProm
Digital
Control
CRT/
Video
Control
Trace Rotation
Signal
RAM
24 MHz
TG Lev.
HOR VERT UNBLANK FOCUS
RS-232 Interface
PS- Board
YXZ- Board
HOR FIN AMP UNBLANK AMP VERT FIN AMP
FOCUS CONTROL
SUB-D Connection
RF INPUT
Test
Signal
Audio
(located on
keyboard)
TG
Output
RF BOX IF UNIT
fi x e d
SMB
SMB
SMB
SMA
1340 MHz 40 MHz
1
2
3
4 5
7
9
10
11
8
12
13
14
15
16
17
18
19 20
21
22
26
24
23
25
30
31
33
34
32
35
42
36
38
39
37
40
41
49
53
52
51
50
67
64
65
63
66
62
61
60

Hameg HM5014-2 Specifications

General

Brand	Hameg
Model	HM5014-2
Category	Measuring Instruments
Language	English