Grundig UZ 2400 User manual

CONTENTS
1 General Information 3
1.1 Safety Instructions 3
1.2 Switching the Operating Voltage 230 V~/115 V~ 3
1.3 Mains Connection 4
1.4 Installing the Power Supply Unit 4
1.5 Switching on 4
1.6 EMC 4
1.7 Inspection and Maintenance 4
1.8 Warranty 5
1.9 Accessories Supplied 5
2 Application 6
3 Set-up and Functional Description 7
3.1 Block Diagram 7
3.2 Description 7
4 Technical Data 8
4.1 General Data 8
4.2 Specifications 8
4.2.1 Characteristics of Channel A 8
4.2.2 Characteristics of Channel C 9
4.3 Functions 9
4.3.1 Diagnostic Unit Function “CHK” 9
4.3.2 Frequency Measurement on Channel A “FRA” 9
4.3.3 Frequency Measurement on Channel C “FRC” 9
4.3.4 Period Length Measurement on Channel A “PER” 9
4.3.5 Simple Pulse Counting On Channel A “TOT” 10
4.4 Time Base 10
4.5 Display 10
4.6 Interface RS-232C 11
5 Control Elements 12
6 Realization of Measurements 14
6.1 Starting 14
6.1.1 Settings for Channel A 14
6.2 Frequency Measurement (FRA, FRC) 14
6.3 Period Length Measurement 14
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6.4 Simple Pulse Counting 15
6.5 Error Messages 15
7 Remote Control by Program 16
7.1 General Information 16
7.2 Preparation on the Counter 16
7.2.1 Test of the Data Transmission Line 16
7.2.2 Preparations for the Remote Control 16
7.2.3 Transition: Remote Control ⇔Local Control 17
7.3 Messages of the Unit on Remote Control 17
7.3.1 Description of the Unit State 17
7.3.2 Description of the Result 17
7.3.3 Description of the Unit Settings 17
7.3.4 Description of the Error 18
7.4 Overview of Commands on Remote Control 18
7.4.1 Group of Common Commands 18
7.4.2 Group of Commands for Reading the Unit Settings 19
7.4.3 Group of Commands for Setting the Unit Functions 19
7.4.4 Group of Commands for Setting the Measurement Parameters 19
7.5 Status Byte 20
7.6 Measuring by Remote Control 20
7.7 Program Example (Q Basic) 21
8 Maintenance 22
9 Appendix 23
9.1 List of Messages on Display 23
9.2 Declaration of Conformity 24
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1 General Information
1.1 Safety Instructions
Wherever you see this sign you will find information on potential hazards. Please
read these sections with particular care!
Warning! Before opening the instrument disconnect the mains plug!
Attention! If the fuse has to be changed, use only G fuse-link 5 ×20 according to
IEC 127 (see 4.1)!
1.2 Switching the Operating Voltage 230 V~/115 V~
Your instrument left the factory to 230 V~. Switching to 115 V~ requires the instrument to be
opened, which should only be done by trained personnel.
Setting the Operating Voltage 115 V~
1. Disconnect the instrument from the mains.
2. Remove upper caps and loosen the screws below.
3. Identify the mains voltage switch with the following illustration.
4. Switch the voltage mains voltage switch (slide switch) located under the power switch to
the indication “115”.
5. Remove safety cover at the mains plug and replace the fuse with the fuse for 115 V
supplied with the instrument.
6. Fasten upper caps and put the sticker supplied with the instrument for marking the switch-
over to 115 V on to the type label.
Mains Voltage Switch
115 V position 230 V position
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1.3 Mains Connection
The design of the unit meets the requirements of safety class I according to EN 61010-1, i. e.
all metal parts accessible from outside and exposed to contact are connected with the
protective conducto of the supply network.
Power is supplied via a mains cable with earthing contact.
1.4 Installing the Power Supply Unit
The unit should not be operated close to equipment that develops heat.
1.5 Switching on
The unit is switched on using the power switch at the front. The power switch separates the
unit completely from the primary side of the transformer.
The LED ON/OFF serves as an operation indicator.
1.6 EMC
The unit is interference-free according to the EN 50081-1 and EN 50081-2. In order to fulfil
the limiting values in line with present standards, it is absolutely necessary that only cables
which are in perfect condition be connected to the unit. The following information applies
here:
− Metallic or metallized socket cases must be used for interface RS-232C. The socket cases
and the braided screen of the cables must be connected at the shortest distance possible.
The signal earth must not be connected to the braided screen.
− After opening and closing the unit ensure that if all the fixing parts and contact springs are
installed as before that all the screws are fixed and tightly.
1.7 Inspection and Maintenance
If service is needed, due attention should be paid to the regulations according to VDE 0701.
The unit should only be repaired by trained personnel.
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1.8 Warranty
GRUNDIG guarantees the perfect working order of the unit for 12 months as from delivery.
There is no warranty for faults arising from improper operation or from changes made to the
unit or from inappropriate application.
If a fault occurs please contact or send your unit to:
The unit should be sent in appropriate packing - if possible in the original packing. Please
enclose a detailed fault report (functions working incorrectly, deviating specifications and so
on) including unit type and serial number.
Kindly verify warranty cases by enclosing your supply delivery note. Any repairs carried out
without reference to a valid warranty will initially be at the owner’s expense.
Should the warranty have expired, we will, of course, be glad to repair the unit as per our
General Terms Of Assembly And Service.
1.9 Accessories Supplied
1 mains cable
2 fine wire fuses (T 200 mAL/250 V and T 100 mAL/250 V)
1 coaxial cable
1 operating instructions
1 sticker of marking for 115 V switch-over
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2 Application
• The table measuring unit UZ 2400 is a compact two-channel counter controlled by a
microprocessor and allows frequency measurements of period signals via channel A within
the range of 10 Hz to 100 MHz and via channel C from 50 MHz to 2.4 GHz.
• Moreover, the period length of periodic signals from 100 µs to100 ms can be measured
within the range of and pulses can be counted from 1 to 109pulses via channel A.
• The trigger level can be set and measuring amplitudes up to 50 V can be attenuated at the
ratio of 10:1 on channel A.
• Functions and measuring ranges can be set by means of 4 buttons in the form of a menu
and they are clearly depicted on a 16-digit display.
• The unit is supplied with a serial interface RS-232C which allows both remote control and
a further processing of the data.
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3 Set-up and Functional Description
3.1 Block Diagram
12318 22
4
5
146789
10 11 12 13
15 16
17
21 20 19
A
C
Time Base Sha
p
e
r
Pulse Generato
r
Processo
r
RS-232C
Counte
r
Divide
r
Pre-Ste
p
s
Pre-Ste
p
s
Power Su
pp
l
y
Control Lo
g
ic
Dis
p
la
y
Interface
Ke
y
boar
d
Divider 1:10
3.2 Description
The unit's internal measuring operation is controlled by a one-chip microprocessor MCS-51
with the help of additional circuits. The processor [18] which gets its time frequency from the
pulse generator [3] can also communicate with superior systems via the serial interface [22].
The time base which is supplied with the standard frequency of 10 MHz [1] provides precise
frequencies for single measuring intervals. The standard frequency is led to a special circuit
via the shaper [2]. This circuit contains an internal predivider of 1:10 [4] and a programmable
dividing decade [5]. Furthermore it provides reference frequencies of 1 MHz and 10 MHz.
The generated measuring intervals are led on the input of the switch- and control logic [14].
The measuring signal passing through channel A is led to a Schmitt-trigger [8] after being set
[6] and boosted [7], and, subsequently, it is converted from ECL to TTL level [9]. This signal
also is led to the input of the switch- and control logic.
The measuring signal passing through channel C is also set and boosted [10, 11], and led to a
fast divider [12] and converted from ECL to TTL. Before passing the switch- and control
logic the high-frequency signal is divided further [13].
The signal gated in [14] is led to a high-speed predivider of 1:10 [15] which is counted by a
decadic counter [16] and shown on an alphanumeric LCD-display [19]. The processor,
thereby, organizes the reading of the keyboard [20], the setting of the control logic, the
resetting of the counting decades and the repetition of the measurement by means of the
interface circuit [17].
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4 Technical Data
4.1 General Data
Rated temperature: + 23 °C ±2 °C
Operational temperature: + 5 to + 40 °C
Relative humidity: 20 ... 80 %
Atmospheric pressure: 86 ... 106 kPa
Operational position: horizontal or inclined by ±15 °
Operational voltage: sinusoidal alternating voltage (distortion factor < 5 %)
115/230 V ±10 % (internal switchable)
Frequency: 50 ... 60 Hz (±5 %)
Power input: 20 VA
Fuses: T 100 mAL/250 V (230 V~)
T 200 mAL/250 V (115 V~)
Safety class: 1, according to EN 61010 Part 1
Radio interference suppression: EN 55011 Class B
Dimensions (L ×H ×D): 225 mm ×85 mm ×200 mm
Dimensions of packing: 310 mm ×110 mm ×265 mm
Weight:
of universal counter approx. 1.8 kg
incl. packing and accessories: approx. 2.6 kg
4.2 Specifications
4.2.1 Characteristics of Channel A
Frequency range: 10 Hz ... 100 MHz
Basic sensitiveness: = 25 mV (sinusoidal signal)Vrms
(Voltage divider 1:1): = 75 mV on pulses with minimal width of ≥10 nsVpp
Coupling: alternating voltage
Input impedance: 1 MΩ(< 20 pF)
Input divider: 1:1 or 10:1
Dynamic range: 75 mV ≤V ≤5 mV
pp
(with divider 10:1): 750 mV ≤V ≤50 mV
pp
Maximum input voltage: 50 V (V = + V ) with divider 10:1
pp
8 V with divider 1:1, f > 50 kHz
Trigger level setting: adjustable by potentiometer
(voltage divider 1:1) + 0.5 ... – 0.5 V
(voltage divider 10:1) + 5 ... – 5 V
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4.2.2 Characteristics of Channel C
Frequency range: 50 ... 2,400 MHz
Dividing ratio: 100:1
Sensitiveness: = 25 mV on 100 MHz f ≤2 GHzVrms ≤
= 50 mV on 50 MHz f ≤100 MHzVrms ≤
2 GHz ≤f ≤2.4 GHz
Input impedance: 50 Ω
Standing wave ratio: ≤2.5
Coupling: alternating voltage
Maximum input voltage: = 2.5 V (sinusoidal signal) ±40 V direct-voltage portionVrms
Optimal input voltage: indicated by extinguishing of LEDs “MIN” and “MAX”
4.3 Functions
4.3.1 Diagnostic Unit Function “CHK”
Measuring range: 10 MHz
Measuring times (GATE TIME): tGate = 10 µs, 100 µs, 1 ms, 10 s, 100 ms, 1 s, 10 s
Accuracy: ±1 LSD1)
Result display: MHz with decimal point
4.3.2 Frequency Measurement on Channel A “FRA”
Measuring range: 10 Hz ... 100 MHz
Measuring times (GATE TIME): tGate = 10 µs, 100 µs, 1 ms, 10 ms, 100 ms, 1 s, 10 s
Frequency resolution: f = 1 / tGate (max. 8 digits)
Accuracy: ±1 LSD1) ±time base error
Result display: Hz, kHz, MHz with decimal point
4.3.3 Frequency Measurement on Channel C “FRC”
Measuring range: 50 MHz ... 2.4 GHz
Input voltage: 25 mV ≤V≤2.5 V
rms
Measuring times (GATE TIME): tGate = 10 µs, 100 µs, 1 ms, 10 ms, 100 ms, 1 s, 10 s
Frequency resolution: f = 100 / tGate (max. 8 digits)
Accuracy: ±1 LSD1) ±time base error
Result display: MHz, GHz with decimal point
4.3.4 Period Length Measurement on Channel A “PER”
Measuring range: 100 µs ... 100 ms
Sensitiveness: = 100 mVVrms
Measuring unit: 100 ms
Accuracy: ±1 LSD1) ±time base error ±trigger error2)
Result display: µs, ms, s with decimal point
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4.3.5 Simple Pulse Counting On Channel A “TOT”
Measuring range: 1 ... 109events
Frequency range: 0 ... 100 MHz
Accuracy: ±1 LSD1)
Result display: without measuring unit and decimal point
Note: The setting of the gate time does not influence the functions period length
measurement and simple pulse counting. The repetition speed is about 200 ms
on automatic operation.
1) LSD: Last significant digit of displayed value; corresponds to the resolution
within the respective measuring range.
2) The trigger error (effective value) is computed as described:
(
)
∆Ts VV
S
noise in noise
=
+−
22
V
- noise voltage within signal
noise
V
- internal noise voltage within amplifier
in noise−
S (V/s) - pulse rate-off-rise of measured signal portion in the trigger
point
4.4 Time Base
Start-up time: 15 min
Operational frequency of quartz oscillator: 10 MHz
Accuracy of frequency setting:
±
5
⋅
10-9
Frequency deviations after 24 hours:
≤
±
10-8
Influence of temperature: <
±
5
⋅
10-9/°C
4.5 Display
The unit is equipped with a 16-digit alphanumeric LCD-matrix display. The first three digits
indicate the selected function and the next one indicates the unit operation. Eight digits are
reserved for the measuring result and the last four digits are for the display of measuring units.
In addition to the measured value, the selected function, the set measuring time, the input
voltage dividing ratio and the data transmission rate during remote control operation can also
be indicated on the display.
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