prl wrote:Is the new power supply more efficient than the old one, especially on standby power*? A long time ago I
measured (using CCI PowerMate) the standby power on our DP-S1 as 4.5W.
...
sub3R wrote:Peter ... when I get a chance I’ll measure the standby current & voltage (I don’t have a CCI PowerMate), but it may not be a fair comparison as the 320GB S1 appears to use a different display type to the earlier models.
I finally got around to doing this.
Original DP-S1 with 500GB HDD:
In Standby: 27.0mA on 100mA range at 233V8. ... (approx 6.3VA)
On with SC10 OneHD being displayed (timeshift enabled): 120mA on 1A range at 233V8. ... (approx 28VA)
On with SC10 OneHD & ABC News24 being recorded: 121mA on 1A range at 233V8. ... (approx 28.3VA)
Refurbished later model DP-S1 with 320GB HDD:
In Standby: 39.5mA on 100mA range at 234V8. ... (approx 9.3VA)
On with SC10 OneHD being displayed (timeshift enabled): 121mA on 1A range at 234V8. ... (approx 28.4VA)
On with SC10 OneHD & ABC News24 being recorded: 124mA on 1A range at 234V8. ... (approx 29.1VA)
Comments:
Current was measured on an AVO 8 Mk3 analogue multimeter (handbook info: AC current 2.25% of full-scale value over effective range, the effective range is 0.25 of scale-range to full-scale value).
Voltage was measured on a Digitech QM-1536 True RMS digital multimeter (3 3/4 digit, 4000 count, +/- 1.0% +5 accuracy).
The above instruments haven’t been serviced or calibrated for many years so the accuracy could be out.
Measurements were taken twice on both S1s over a 30 minute period with identical settings & cables used (just swapped the S1s & used the same connections). Neither S1 had been turned ON from Standby for some time. Outside ambient temperature at the time was approx 19 degrees (slightly cooler inside the house).
Original DP-S1 with 500GB HDD details:
I refurbished the power supply (A&D Corp.) just over 12 mths ago (replaced all electro caps). Fitted a 500GB SATA Western Digital WD5002ABYS RE3 Enterprise HDD & Altronics SATA to IDE Converter module D2335. Replaced the RTC capacitor with a supercap.
Refurbished later model DP-S1 with 320GB HDD details:
320GB IDE 7200rpm Seagate ST3320820ACE HDD. Later model power supply (Power Bridge, Date: 2007.07.22, Model: IP-108 (IP-108C), Rev:9.0). This has a different coloured front display to the above original DP-S1. No modifications.