SAP1000/SAP2500
Active ProbeUser ManualEN01ACONTENTS

12SAFETY INSTRUCTIONS .................................................................................................................................... 21.1

SYMBOLS ............................................................................................................................................................ 31.2

OPERATING E NVIRONMENT ............................................................................................................................... 31.3

CALIBRATION ...................................................................................................................................................... 41.4

CLEANING ........................................................................................................................................................... 41.5

ABNORMALITIES ................................................................................................................................................. 4

FIRST STEPS.......................................................................................................................................................... 62.1

DELIVERY C HECKLIST ........................................................................................................................................ 62.2

FUNCTIONAL C HECK .......................................................................................................................................... 62.3

QUALITY ASSURANCE ........................................................................................................................................ 72.4

MAINTENANCE AGREEMENT .............................................................................................................................. 83

MECHANICAL DIMENSION ................................................................................................................................ 94

ACCESSORIES .................................................................................................................................................... 105PROBE OPERATION .......................................................................................................................................... 1465.1

CONNECTING THE PROBE TO AN OSCILLOSCOPE .......................................................................................... 145.2

CONNECTING THE PROBE TO THE TEST CIRCUIT .......................................................................................... 14

SPECIFICATIONS................................................................................................................................................ 16

SAP1000/SAP2500 Active Probe User Manual1

1 Safety Instructions
Carefully read the following safety precautions to avoid person injury andprevent damage to the instrument and any products connected to it. To avoid
potential hazards, please use the instrument as specified.

This section contains instructions that must be observed to keep thisoscilloscope accessory operating in a correct and safe condition. You arerequired to follow generally accepted safety procedures in addition to theprecautions specified in this section. The overall safety of any system
incorporating this accessory is the responsibility of the assembler of thesystem.
Connect and disconnect properly. Connect probe to the measurement
instrument before connecting the test leads to a circuit/signal being tested.
Use only within operational environment listed. Do not use in wet or
explosive atmospheres.
Ground the product. This product is indirectly grounded through thegrounding conductor of the mainframe power cord. To avoid electric shock, thegrounding conductor must be connected to earth ground. Before making
connections to the input or output terminals of the product, ensure that theproduct is properly grounded.
Use indoors only.
Keep product surfaces clean and dry.
Be careful with sharp tips. The tips may cause bodily injury if not handledproperly.

2SAP1000/SAP2500 Active Probe User ManualDo not operate with suspected failures. Do not use the probe if any part isdamaged. Cease operation immediately and sequester the probe frominadvertent use.

1.1 Symbols
These symbols may appear on the probe body or in this manual to alert you toimportant safety considerations.

CAUTION. Potential for damage to probe or instrument it isconnected to. Attend to the accompanying information to protect
against personal injury or damage. Do not proceed until conditions
are fully understood and met

1.2 Operating Environment
The accessory is intended for indoor use and should be operated in a clean,
dry environment. Before using this product, ensure that its operating
environment is maintained within these parameters:
Temperature： 5°to 40°C.
Humidity：Maximum relative humidity 80 % for temperatures up to 30 °C
decreasing linearly to 50 % relative humidity at 40°C.
Altitude：Up to 10,000 ft (3,048 m).

SAP1000/SAP2500 Active Probe User Manual

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WARNING: Do not operate this product in explosive, dusty or humidair.

CAUTION: Do not exceed the specified maximum input voltage.
See technical data for details.

1.3 Calibration
The recommended calibration interval is one year from the time the probe isput into service.

1.4 Cleaning
The exterior of the probe and cable should be cleaned, using a soft clothmoistened with water. The use of abrasive agents, strong detergents, or othersolvents may damage the probe. Always ensure that the input leads are free ofdebris.

CAUTION: The probe case is not sealed and should never be
immersed in any fluid.

1.5 Abnormalities
This probe should only be used for the purpose specified by the manufacturer.
The probe may be damaged when it exhibits visible damage or is subjected to4

SAP1000/SAP2500 Active Probe User Manualsevere transportation pressure. If you suspect that the probe is damaged,
immediately disconnect the probe from the oscilloscope. In order to use theprobe correctly, all instructions and markings should be read carefully.

WARNING: Using the probe in a manner not specified by themanufacturer may damage the probe. This probe and related
accessories should not be directly connected to the human body orused for patient monitoring.

SAP1000/SAP2500 Active Probe User Manual5

2 First Steps

2.1 Delivery Checklist
First, verify that all items listed on the packing list have been delivered. If you
note any omissions or damage, please contact your nearest SIGLENT
customer service center or distributor as soon as possible. If you fail to contact
us immediately in case of omission or damage, we will not be responsible forreplacement.

Figure 1 SAP2500 Active Probe

2.2 Functional CheckThe function check needs to use the oscilloscope that supports SAPBusinterface. Please follow the steps below to check the probe function.
1. Turn on the oscilloscope and warm up for 20 minutes.
2. Connect the active probe to channel 1 of the oscilloscope.
3. Open the parameter bar of channel 1 and check the probe information,

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SAP1000/SAP2500 Active Probe User Manualincluding probe model, serial number, bandwidth, impedance, capacitance,and attenuation ratio.
4. Select the channel to which the probe is connected. Set the oscilloscope
scale factor to 2 V/div. Set the oscilloscope offset factor to 0 V.
5. Measure the average voltage of channel 1, and the reading range should
be within ± (1.5%* full-screen reading +10mV). If the reading is beyond therange, the check will not pass.
6. Change the scale factor of channel 1 to 1 V/div, 500 mV/div, 200 mV/div,
100 mV/div, 50 mV/div, 20 mV/div, 10 mV/div, and repeat Step 5 to checkthe average voltage reading at each scale.

2.3 Quality Assurance
The oscilloscope has a 3-year warranty (1-year warranty for probe andaccessories) from the date of shipment, during normal use and operation.
SIGLENT can repair or replace any product that is returned to the authorized
service center during the warranty period. We must first examine the product toSAP1000/SAP2500 Active Probe User Manual7

make sure that the defect is caused by the process or material, not by abuse,
negligence, accident, abnormal conditions, or operation.

SIGLENT shall not be responsible for any defect, damage, or failure caused byany of the following:a) Attempted repairs or installations by personnel other than SIGLENT.
b) Connection to incompatible devices/incorrect connection.
c) For any damage or malfunction caused using non-SIGLENT supplies.
Furthermore, SIGLENT shall not be obligated to service a product that has
been modified. Spare, replacement parts and repairs have a 90-day
warranty.

2.4 Maintenance Agreement
We provide various services based on maintenance agreements. We offer
extended warranties as well as installation, training, enhancement and on-site
maintenance, and other services through specialized supplementary support
agreements. For details, please consult your local SIGLENT customer service
center or distributor.

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SAP1000/SAP2500 Active Probe User Manual

3 Mechanical Dimension
Characteristic

Description

SAPBus interface
115.0 mm × 38.9 mm × 24.5 mmbox
Probe head

83.0 mm × 14.1 mm × 6.4 mm

Cable length

1.3 m (from the probe head to the compensation box)

SAP1000/SAP2500 Active Probe User Manual9

4 Accessories
The SAP1000 and SAP2500 probes are provided with numerous features andaccessories to make probing and connecting to different test points easier thanever.
Standard Accessory

Part Number

Quantity

Unit

Straight Tip

2.74.70.12.003

5pcs

Pogo Tip

2.74.70.12.004

5

pcs

L-In Adapter

2.74.70.12.005

1

pcs

Z-Ground2.74.70.12.006

1

pcs

Y Lead Adapter

2.52.42.11.020

1

pcs

Right Angle Pin Lead 5cm

2.52.42.11.016

1pcs

Straight Pin Lead 6cm

2.52.42.11.017

1

pcs

Right Angle Pin Lead 10cm

2.52.42.11.018

1pcs

Straight Pin Lead12cm

2.52.42.11.019

1pcs

Channel ID Clips (Set of 4colors)

2.75.23.10.003

1

set10

SAP1000/SAP2500 Active Probe User ManualFigure 2 Accessories

Straight Tip：The straight tip is rugged and designed for general probing. Fitsin either probe socket.

SAP1000/SAP2500 Active Probe User Manual11

Pogo Tip：The pogo tip provides z axis compliance. The tip can fit into a socket
or via and onto an IC leg.

L-In Adapter：These leads have a socket on one end with a right angle and asquare pin on the other to connect to the input or ground socket of the probe
body and is recommended in high frequency applications.

Z-Ground：The offset pin is designed to be attached to either socket of theprobe head. The offset pin is the highest quality grounding solution and isrecommended in high frequency applications.

Y Lead Adapter：This lead is used for both ground and input lead
simultaneously. It has two sockets on one end and two square pins on theother and may be used for general purpose probing.

Straight Pin Leads：These leads have a socket on one end and a square pin

12SAP1000/SAP2500 Active Probe User Manual

on the other to connect to the input or ground socket of the probe body, andmay be used for general purpose probing.

Right Angle Pin Leads: These leads have a socket on one end with a rightangle and a square pin on the other to connect to the input or ground socket ofthe probe body, and may be used for general purpose probing.

Channel ID Clips：They are used to distinguish the oscilloscope channel thatthe probe is connected to.

SAP1000/SAP2500 Active Probe User Manual13

5 Probe Operation
The SAP series probe is a precision test instrument. Exercise care whenhandling and storing the probe. Always handle the probe by the probe body orcompensation box. Avoid putting excessive strain or exposing the probe cable
to sharp bends.

ESD Sensitive: The tips of the probes are sensitive to Electrostatic
Discharge (ESD). Avoid causing damage to the probe by always following
anti-static procedures (wear wrist strap, etc.) when using or handling theprobe.

5.1 Connecting the Probe to an Oscilloscope
The SAP1000 and SAP2500 probes have been designed for use with Siglent’s
SDS5000X and SDS6000A platforms equipped with the SAPBus interface.
When you attach the probe output connector to the oscilloscope’s input
connector, the oscilloscope recognizes the probe, and provides proper
termination.

5.2 Connecting the Probe to the Test Circuit
To maintain the high-performance capability of the probe in measurement
applications, care must be exercised in connecting the probe to the test circuit.

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SAP1000/SAP2500 Active Probe User ManualIncreasing the parasitic capacitance or inductance in the input paths may
introduce a “ring” or slow the rise time of fast signals. Input leads which form alarge loop area will pick up any radiated electromagnetic field which passes
through the loop and may induce noise into the probe input.

Using one of the available accessories makes the SAP2500 probe with its
small profile and low mass head ideally suited for applications in dense
circuitry.

The amplifier inside the probe has a limited linear working range. In order toensure that the input linearity error is less than 3%, the amplitude of the input
signal needs to be limited to ±8 V. The probe has a DC offset adjustment
function, which can adjust the DC offset to eliminate the DC component in thetest signal and maximize the performance of the probe. The DC offset
adjustment range is ±12 V.

SAP1000/SAP2500 Active Probe User Manual15

6 Specifications
The SAP1000 and SAP2500 are compact, high impedance active probe
designed to meet today’s increasing demand for measurements on a variety oftest points. With low input capacitance and high input resistance, circuitloading is minimized.

With the SAPBus interface, the SAP1000 and SAP2500 become an integral
part of the oscilloscope. The probe can be controlled from the oscilloscope’s
front panel. The oscilloscope provides power to the probe, so there is no needfor a separate power supply or batteries.

Key BenefitsBandwidth
DC ~ >2.5 GHz（SAP2500）
DC ~ >1.0 GHz（SAP1000）

1 MΩ Input Resistance10X Attenuation



Low Input Capacitance±8 Volts Dynamic Range with ±12 Volts offset capablity



SAPBus interface

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SAP1000/SAP2500 Active Probe User Manual

The specifications of the probe need to meet the following conditions:
1. The probe is within the validity period of calibration.
2. The ambient temperature is within 25℃±5℃.
3. The probe is correctly connected to the oscilloscope.
4. The probe and oscilloscope are in a thermally stable environment, and theprobe and oscilloscope should be warmed up for at least 20 minutes.

Warranted characteristics:
Characteristics

SAP1000

SAP2500

Bandwidth (probe only)>1 GHz>2.5 GHz

Bandwidth (with scope)

1 GHz（SDS5104X）

2 GHz（SDS6204A）

1.2 pF

1.1 pF

Input capacitance
Input resistance

1 MΩ

Offset range±12 V

Attenuation ratio (DC)÷10Offset accuracy< 3%DC gain accuracy< 3%Input dynamic range±8 V

Maximum input voltage(non-destruct)

20 VCable length

130 cmSAP1000/SAP2500 Active Probe User Manual17Figure 3 Typical frequency response of SAP2500

Figure 4 Input impedance over frequency of SAP2500

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SAP1000/SAP2500 Active Probe User ManualSAP1000/SAP2500 Active Probe User Manual

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