Rohde & Schwarz HZ 115 User Manual

HZ 115

Differential probe for oscilloscopes

 1500 V input voltage max.
 30 MHz bandwidth
 x 100 and x 1000 attenuation
 > 50 dB CMRR (1MHz)

 User-friendliness through a

 Automatic Switch-off
 Beep appears when overrange

 Low battery indication
 Battery operation with external

microcontroller

supply option

C E

IEC 1010 Cat IIIIEC 1010 Cat III

IEC 1010 Cat III

IEC 1010 Cat IIIIEC 1010 Cat III

ContentsContents

Contents

ContentsContents

Symbols usedSymbols used

Symbols used

Symbols usedSymbols used

1. Safety precautions

2. Items supplied with the probe

3. Introduction to the differential probe

4. Technical features.

5. Using the probe

6. Maintenance and repair

7. Examples of differential probe applications

1.Saf1.Saf

ety prety pr

1.Saf

ety pr

1.Saf1.Saf

ety prety pr

Prior to using the differential probe for the first time, read the following carefully :

 The probe must only be used by qualified personnel.
 Earthing the probe : This probe is designed to be Class 1 (connected to a protective conductor) so, apply carefully the

following

 Use only high quality accessories which conform to safety standards.
 Never open the probe whilst the input leads are connected.
 Never exceed the maximum input voltage of 1500 V (DC + AC peak), (IEC 1010-1 Cat. III). When using equipment with a reted of

 Do not expose the probe to humidity, steam or an aggressive or explosive environment.
 Keep the case and the connection leads in a clean condition and prevent humidity or liquid from being able to penetrate inside

 Do not use the probe if there is any reason to think that it is not operating properly or that it is faulty.
 The mains power supply must conform to the standards in force.
 If the probe is not to be used for a prolonged period, remove the battery, so that it will not damage the battery compartment.

2. Items supplied with the pr2. Items supplied with the pr

2. Items supplied with the pr

2. Items supplied with the pr2. Items supplied with the pr

connecting procedure: By means of the BNC output socket, connect the probe to the oscilloscope in order to earth it. It is
therefore necessary to check that the oscilloscope itself is connected to earth via a lead which conforms to regulations.
Then connect the probe to the oscilloscope, prior to connecting the leads to the item to be tested.
It is imperative not to disconnect the probe from the oscilloscope until after the test leads have been disconnected.

1000 V CAT III they never exceed the maximum input voltage of 1400 V (DC + AC peak).

the probe or its component parts.

The differential probe is supplied with the following : 1 Differential probe 1 9 V monobloc battery 6LF22

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The following safety signs are used on the probe
and in these instructions:

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Caution, dang

Caution, dang Caution, dang

2 safety test tips 1 operating instructions

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Caution, dang

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3. Introduction to the differntial probe

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OUTPUT
max. ± 1,5 V

Socket for external supply
12 V DC / 30 mA

OFF button

ON button

LED
yellow - x 100
red - x 1000
flashes- U batt < 6 V

Attenuation switch
pressed - x 100
not pressed - x 1000

The srews for opening the
probe are located on the rear
face.

Differential input
(Safety leads)

>

DIFFERENTIAL PROBE

>

HZ 115HZ 115

HZ 115

HZ 115HZ 115

>

>

POWER

X 100 X1000

>

1500Vpeak

max 1500Vpeak

>

>

OFFON

1500Vpeak

Input Differential input voltage max. ± 1500V (DC+AC

Common mode input voltage ± 1500V (DC+AC
to earth. Warning: both above
conditions must be respected
simultaneously.
When using equipment to 1000V ± 1400V (DC+AC

Safety IEC1010-2-031, Insulation: class1

Degree of pollution 2, Indoor use, altitude < 2000m
Installation category of input CAT III (*); 1500V max. to earth
Operating temperature 0°C to +40°C
Storage temperature -10°C to +60°C
Relative humidity 80 % RH at 40°C
Input impedance 60MΩ ||1.5 pF
Attenuation x 100 and x 1000
Accuracy after 1 min. ± 3% (18°C - 30°C) I

Frequency Bandwidth at x 100 20 MHz

Bandwidth at x 1000 30 MHz
Rise time at x 100 17.5 nsec
Rise time at x 1000 12 nsec

Output Output voltage max. ± 1.5 V (1MΩ)

Output impedance 50 Ω
Noise max. 1.5 mV
Common mode rejection ratio DC: 70 dB AC: >50dB (at 1 MHz)

Supply Battery 9V block

Low battery indication LED flashes at U batt < 6 V
Optional power supply 12V DC / 35 mA
Operating time on one battery approx. 16 hours

Battery switch-off automatic, after 10 minutes
Accessories 2 safty test tips red and black
Dimensions Case (LxWxH) 157 x 60 x 26 mm

Weight 300 g with battery

Material ABS, internal screening

Output cable length 50 cm

EMC:
This instrument has been designed in conformity with EMC standards in use and the
compatibility has been tested regarding the following standards - EN 61326
(IEC 1326). The product herewith complies with the requirements of the low voltage
directive 73/23/EEC and the EMC directive 89/336/EEC amended by 93/687EEC.
(*) Overvoltage category III is defined as follow: Fixed installation equipment
(Examples: Industrial apparatus permanently connected to a fixed installation)

peak
peak

peak

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