NGMO1 multi-feature power supply (
manual).
Basic specs:- 0-15V at 2.5A
- Ripple + noise: <1mVrms
- Set resolution: 1mV, 1mA
- Read resolution: 1mV, 200uA/10uA/0.1uA (depending on range)
- Accuracy: 0.05 % +5 mV, +/-10mA
- 1A+ current sink
![](https://www.eevblog.com/forum/testgear/ngmo1-0-15v-0-2-5a-power-supply-teardown-(rohde-schwarz)/?action=dlattach;attach=48772;image)
Front of the supply. Rotary encoder broken during shipment and will have to get a replacement (ECW0J-B24-AC0006).
Oddly someone had sharpied over the "Made in Germany" text in the bottom right.
![](https://www.eevblog.com/forum/testgear/ngmo1-0-15v-0-2-5a-power-supply-teardown-(rohde-schwarz)/?action=dlattach;attach=48774;image)
Bottom of the unit contains the main processor, communications, and bulk capacitance. Caps are 85C rated but I can't see this board getting very warm.
Proper mains switch seen crossing the top. Minimal input filtering on the top left.
![](https://www.eevblog.com/forum/testgear/ngmo1-0-15v-0-2-5a-power-supply-teardown-(rohde-schwarz)/?action=dlattach;attach=48776;image)
LEDs for various rails: 5V, +/-8V, 16V, 24V.
Opto's going off to output section on the other side.
![](https://www.eevblog.com/forum/testgear/ngmo1-0-15v-0-2-5a-power-supply-teardown-(rohde-schwarz)/?action=dlattach;attach=48788;image)
- 16-bit micro (C167CR-LM)
- 8mbit flash (M29F800)
- 64K eeprom (at28hc64b)
- 2x1Mbit SRAM (HY628100B)
![](https://www.eevblog.com/forum/testgear/ngmo1-0-15v-0-2-5a-power-supply-teardown-(rohde-schwarz)/?action=dlattach;attach=48778;image)
Top side of the PSU which contains either one or two mirrored supply boards + transformers.
![](https://www.eevblog.com/forum/testgear/ngmo1-0-15v-0-2-5a-power-supply-teardown-(rohde-schwarz)/?action=dlattach;attach=48780;image)
- opamps: OP27, OP275, AD823, AD825, AD829
- 8-bit DAC (DAC08)
- 16-bit "low glitch" DAC (LTC1650)
![](https://www.eevblog.com/forum/testgear/ngmo1-0-15v-0-2-5a-power-supply-teardown-(rohde-schwarz)/?action=dlattach;attach=48782;image)
- 12-bit dual DAC (LTC1446)
- 16-bit 195kSPS delta-sigma ADC (AD7722AS)
- 24-bit DSP (DSP56303PV100)
- 2x256K SRAM (IS61LV256)
A lot of the advanced functionality isn't usable via the front panel. A bit of a shame but expected as you would normally be using the PC analysis software (don't have it).