ULTRA-LOW NOISE HIGH STABILITY HIGH VOLTAGE POWER SUPPLY
This high voltage power supply features ultra-low noise and high stability, making it ideally suited as a high-accuracy high voltage reference.
- Output voltage: ±3100V
- Output current: 0 to 5mA
- Rated output power: 15.5W
- Bestseller
Exceptional Quality with Low Ripple of 1 mVp-p
ASX series, an advanced high voltage power supply, features the world's highest level of noise reduction and high stability. Offering ultra-low noise with a ripple of 1 mVp-p and high stability of 50 ppm/H at ±3.1 kV output, the ASX series is widely adopted by research institutes in Japan and worldwide.
Additionally, the ASX series features a digital setting system with a large five-digit meter and three rotary encoder switches, enabling quick and accurate voltage settings with a full-scale accuracy of 170 ppm.
The ASX series is particularly well-suited for driving Photomultiplier Tubes (PMTs) in low-light-level measurements, where minimal noise and aging can adversely affect performance.
FEATURES AND BENEFITS
- Ultra-low Noise
- Ultra-low noise 1mVp-p at rated output voltage ±3.1 kV
- Outstanding operability
- Quick and accurate setting of output voltage with the digital setting system having a five-digit display of setting voltage and three rotary encoder switches used separately for the digits
- Designing highly reliable system
- High reliability of all solid-state designs equipped with many protection functions as standard
APPLICATIONS
- Reference power supply
- Photomultiplier Tube (PMT)
- Microchannel Plate (MCP)
- Photo Detector
- Geiger counter, Radiation detection
- Nuclear equipment
- Precise measurement
Models
Specifications
- Input voltage
- 100/115/200/230 Vac ±10％, 50/60 Hz, Single-phase
- Output voltage control
-
[Local] Rotary encoder on front panel
[Digital remote] Command (option)
Options
- -LA
-
Includes a remote terminal offering the following features
-
Interlock
High voltage output cut off by external switch -
External output ON/OFF
High voltage output ON/OFF by external relay -
Output voltage monitor
0 to ±10 V/maximum output voltage (output impedance 1 kΩ) same polarity as high voltage output
-
Interlock
- -LC
-
Current limit
The current is limited by the voltage droop characteristic.
- -LG
-
GPIB control (Scheduled for discontinuation in December 2028)
For output ON/OFF, output voltage setting (resolution 0.1 V) and switching polarity.
- -LMh
-
A load side of the output cable will be the MHV plug.
- -LRs
-
RS-232C control
For output ON/OFF, output voltage setting (resolution 0.1 V) and switching polarity.
- -LSh
-
The load side of the output cable will be changed to an SHV plug.
- -LW
-
Slow start
Takes about 10 seconds to reach a set voltage after turning on the output.
(Takes about 5 seconds if setting half of the output voltage.)
- -L(3m), -L(5m), -L(7m)
-
High voltage output shielded cable length change
Please select high voltage output cable lengths of 3 meters, 5 meters, or 7 meters.
(Please contact your nearest sales office if you require a cable length other than those listed above.)
-LRs and -LG options cannot be selected together. Need to select either one.
How to Order
When ordering, add Option No. to Model No. in alphabetical order, followed by the cable length.
Example: ASX-3R5-LACGMhW(3m), ASX-3R5-5-LACRsShW(7m)
Accessories
| Sold separately | CABLE TYPE1 |  |
 |
125 V / 10 A rating | 2.5 meters Fixed length |
|---|
| Standard | CN-BNC-HVP |  |
2.5 meters (Fixed length) |
|---|---|---|---|
| Standard (-LMh option) |
CN-BNC-HVPP (With MHV connector) |
 |
2.5 meters (Fixed length) |
| Standard (-LSh option) |
CN-BNC-HVPSP (With SHV connector on a load side) |
 |
2.5 meters (Fixed length) |
Dimensions
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-
ASX series Datasheet
Date: 2024-01-17 rev.08
PDF (1,288 KB)
-
Safety and Usage of High voltage Power supply
Date: 2025-09-08 rev 04
PDF (602 KB)
-
High Performance High Voltage Power Supplies
Date: 2023-10-06 rev. 12
PDF (3,886 KB)
-
ASX series Instruction Manual
Last updated: April 3, 2020 rev.2.8
PDF (351 KB)
-
ASX series (-LARs option model) Outline Drawing (DXF, PDF)
Date: 2025-11-18
ZIP (265 KB)
Login Required
-
ASX series Datasheet
Date: 2024-01-17 rev.08
PDF (1,288 KB)
-
Safety and Usage of High voltage Power supply
Date: 2025-09-08 rev 04
PDF (602 KB)
-
High Performance High Voltage Power Supplies
Date: 2023-10-06 rev. 12
PDF (3,886 KB)
-
ASX series Instruction Manual
Last updated: April 3, 2020 rev.2.8
PDF (351 KB)
-
ASX series (-LARs option model) Outline Drawing (DXF, PDF)
Date: 2025-11-18
ZIP (265 KB)
On this website, we provide only the latest versions of information and instruction manuals for our products. Therefore, the newest versions of manuals on the website may differ from those that came with products you purchased in the past.
