Seintek S2401 User manual
SERVICE MANUAL
for
SCOPE METER
S2480_E040404_R01
Programmable
Handy Scope Series
i
LIMITED WARRANTY & LIMITATION OF LIABILITY
Each Seintek product is warranted to be free from defects in material
and workmanship under normal use and service. The warranty period
is one year and begins on the date of shipment. Parts, product repairs
and services are warranted for 90 days. This warranty extends only to
the original buyer or end-user customer of a Seintek authorized
reseller, and does not apply disposable batteries or to any product
which, in Seintek’s opinion, has been misused, altered, neglected or
damaged by accident or abnormal conditions of operation or handling.
Seintek warrants that software will operate substantially in accordance
with its functional specifications for 90 days and that it has been
properly recorded on non-defective media. Seintek does not warrant
that software will be error free or operate without interruption.
ii
Contents
1. Introduction and Specifications............................................. 1-1
1.1. Main Features ............................................................... 1-1
1.2. Unpacking the Test Tool Kit ........................................... 1-2
1.3. Specification .................................................................. 1-3
1.3.1. General Specifications ......................................... 1-3
1.3.2. Technical Specification......................................... 1-4
2. General Maintenance .............................................................. 2-7
2.1. Introduction.................................................................... 2-7
2.2. Warranty Repairs and Shipping Information ................. 2-7
2.3. Static Safe Handling...................................................... 2-7
2.4. Cleaning ........................................................................ 2-7
2.5. Disassembly Procedures .............................................. 2-8
2.5.1. Remove the Meter Case.................................... 2-10
2.5.2. Remove Rubber button and Battery Pack ......... 2-10
2.5.3. Separate SUB and Main PCB Assembly ............2-11
2.5.4. Remove LCD Cover............................................2-11
2.6. Assembly Procedures ................................................. 2-12
2.6.1. Layout for LCD Assembly .................................. 2-12
2.6.2. Layout for Scope Assembly ............................... 2-13
3. Performance Testing ............................................................... 3-1
3.1. Introduction.................................................................... 3-1
3.2. Required Test Equipment.............................................. 3-1
3.3. Performance Tests ........................................................ 3-1
3.3.1. Scope center Tests .............................................. 3-1
3.3.2. DCV Tests ............................................................ 3-2
3.3.3. ACV Tests ............................................................ 3-2
3.3.4. OHM Tests ........................................................... 3-3
3.3.5. Frequency Tests................................................... 3-3
3.3.6. AC/DC Coupling Tests ......................................... 3-3
3.3.7. External Tests ...................................................... 3-4
3.3.8. CHB Tests ............................................................ 3-4
3.3.9. Duty Tests ............................................................ 3-4
3.3.10. Pulse Width Tests ................................................ 3-4
3.3.11. RS232 Input and Tests......................................... 3-5
iii
4. Calibration................................................................................ 4-6
4.1. Introduction.................................................................... 4-6
4.2. Preparation before Entering Calibration Mode.............. 4-6
4.2.1. Voltage test .......................................................... 4-6
4.2.2. Setting for RS232C.............................................. 4-6
4.3. Entering Calibration Mode............................................. 4-7
4.4. Calibration Scope Center .............................................. 4-7
4.5. Calibration zero point of DMM function......................... 4-8
4.5.1. DC Volts Calibration............................................. 4-8
4.5.2. AC Volts Calibration............................................. 4-8
4.5.3. Ohms Calibration ................................................. 4-9
4.5.4. Frequency Calibration.......................................... 4-9
4.6. Exiting Calibration Mode ............................................... 4-9
5. List of Replaceable Parts........................................................ 5-1
5.1. Introduction.................................................................... 5-1
5.2. How to Obtain Parts ...................................................... 5-1
5.3. How to Contact Seintek................................................. 5-2
5.4. Newer Instruments ........................................................ 5-2
5.5. Parts .............................................................................. 5-2
6. Schematic Diagrams ............................................................... 6-1
6.1. S2401 & S2800 ............................................................. 6-1
6.1.1. Main PCB Assembly ............................................ 6-1
6.1.2. SUB PCB Assembly............................................. 6-1
6.1.3. Analog.................................................................. 6-1
6.1.4. Digital ................................................................... 6-1
6.1.5. Channel A ............................................................ 6-1
6.1.6. Channel B ............................................................ 6-1
6.2. S2405 & S2505 ............................................................. 6-1
6.2.1. Main PCB Assembly ............................................ 6-1
6.2.2. SUB PCB Assembly............................................. 6-1
6.2.3. Analog.................................................................. 6-1
6.2.4. Digital ................................................................... 6-1
6.2.5. Channel A ............................................................ 6-1
6.2.6. Channel B ............................................................ 6-1
7. Troubleshooting ...................................................................... 7-1
7.1. Introduction.................................................................... 7-1
iv
7.2. Troubleshooting guide................................................... 7-1
7.3. Starting with a Dead meter............................................ 7-2
7.4. Can not install the software........................................... 7-2
7.4.1. Check the H/W and S/W requirement:................. 7-2
7.4.2. Error - Could not copy file…. ............................... 7-2
7.5. The back light is not working......................................... 7-3
7.5.1. Desoldering from EL terminal .............................. 7-3
7.5.2. Remove screw for LCD cover.............................. 7-3
7.5.3. Remove LCD cover.............................................. 7-4
7.5.4. Detail for EL terminal ........................................... 7-4
7.5.5. Insert electric wire between PCB and EL ............ 7-4
7.5.6. Layout for LCD Assembly .................................... 7-5
7.5.7. Install LCD cover.................................................. 7-5
7.5.8. Install screw for LCD cover.................................. 7-6
7.5.9. Soldering of EL terminal....................................... 7-6
7.5.10. Reassembly ......................................................... 7-6
1-1
1. Introduction and Specifications
1.1. Main Features
This Programmable Universal Scope Meter offers enhanced features
that similar type test instruments on the market today don't have.
All the functions are designed to be very convenient to use. You can
quickly get used to working with this METER and the great many
functions integrated inside. This instrument features:
1. RS-232C interface for transferring measurement data and
waveform.
2. Dual Channel and Auto Calibration.
3. Automatic setting for horizontal and vertical division.
4. DC to 5MHz(2405, 2505), 1MHz(2401, 2800) oscilloscope band
width.
5. Built-in auto ranging True-RMS digital MultiMeter
6. Auto ranging
7. Data hold and run mode.
8. Back light display and Low battery indication.
9. Display Type: Super-Twist 132 x 128 pixels.
10.Designed to comply with safety standard for UL3111, CSA C22.2
No.1010-1
1-2
1.2. Unpacking the Test Tool Kit
The following items are included in your test tool kit.
Note
When new, the rechargeable Ni-MH battery pack is not fully charged.
■STANDARD
Description S2401 S2405 S2505 S2800
Scope Meter ●●●●
Ni-MH Battery Pack (installed) ●●●●
Rechargeable Adaptor ●●●●
Test Leads & Alligator Clips (2) ●●●●
Users Manual ●●●●
Rubber Holster ●
Carrying case ●
RS-232 S/W & Cable ●
■OPTION
Description S2401 S2405 S2505 S2800
Rubber Holster ●●●
Carrying case ●●●
RS-232 S/W & Cable ●●●
Inductive Pickup ●
Capacitance Pickup ●
Secondary Adaptor ●
Note:
The accessories may be changed to improve the product quality
without notifying the customers.
1-3
1.3. Specification
1.3.1. General Specifications
1) Operational Temperature:
0°C to +50°C (+32°F to +122°F) at a relative humidity 75% or less
2) Storage Temperature:
-20°C to +60°C with a relative humidity of 75% less
3) Temperature Coefficient:
0.1 x (Specified Accuracy) per °C for temperature <18°C to >28°C
4) Max. Voltage between any Input and Ground: DC or AC 600Vrms
5) Basic DC Accuracy: 0.3%
6) Band width: 5MHz(2405, 2505), 1MHz(2401, 2800)
7) Meter AC Band width: 20kHz
8) Power Supply: Ni-MH Battery 4.8V (1.2V x 4 cell)
9) Battery Life Time:
4 Hours without Backlight on,
3 Hours with Backlight on.
10) Battery Change Time: About 3 Hours
11) Battery Change:
Class-2 transformer,
Input: 120V AC 60Hz or 240V AC 60Hz
Output: 9V DC 1A
12) Display Type: Super-Twist 132 x 128 pixels
13) Equipment Dimensions:
90 mm (width) x 195 mm (depth) x 40 mm (height)
14) Equipment Weight: About 460g
1-4
1.3.2. Technical Specification
1) Oscilloscope Function
(1) Horizontal
Sample Rate 25 MS/s (Dual CH mode)
50 MS/s (Single CH mode)
Record Length 512 single shot, 256 in all modes
Sample / Division 25
Modes Single shot, Roll, Normal
Accuracy 0.01%
Sweep Rate 1uS to 5S in 1, 2, 5 sequence
(2) Vertical
Bandwidth 1MHz
Resolution 8 Bit
Channels Dual
Coupling AC, DC
Input impedance 1 MΩ
Accuracy 3%
Max. Input Volts DC or AC 600Vrms
2401, 2800 0.5V to 500V in 1, 2, 5 sequence
Volt / Division 2405, 2505 50mV to 500V in 1, 2, 5 sequence
(3) Triggering
Type CHA, CHB, External
Coupling AC, DC
Slope Rising (↑) or Falling (↓) edge
Internal Trigger Sensitivity 2 / 20 Division
(4) Waveform Memory
2800 8 Shots
Waveform Memory Others 16 Shots
REF Wave From Memory 45 Shots (Only S2800)
This manual suits for next models
3
Table of contents
Other Seintek Measuring Instrument manuals
