Hi I suspect that if you look closely at the board in the unit, it’s got water stains on it ….
Bob > On Dec 10, 2014, at 5:25 PM, Dr. David Kirkby (Kirkby Microwave Ltd) > <drkir...@kirkbymicrowave.co.uk> wrote: > > I bought an 85053A receiver from the eBay seller yixunhk. This is > supposed to be a real 58503A, rather than one of the updated ones. It > was $799. The diagnostic data from the serial line indicates that this > is so - see. > > E-103> *IDN? > HEWLETT-PACKARD,58503A,3502A00477,3704-A > > A few initial observations. > > 1) I bought it along with a couple of Motorola M12 timing receivers > ($15 each). Two of them were put in a "ziploc freeze guard" bag - not > an antistatic bag. Two boards, along with a washer were in the bag. > > 2) Some SMA to N adapters I bought could have been better wrapped, but > don't seem to suffered any harm. > > I asked the seller if they could sort me out a unit in good cosmetic > condition - offering to pay extra. They said they would, for no extra > charge. When it arrived it does look *mint* condition. I can't see a > scratch on it. When I bought a CertiPrime unit from Agilent I had to > look hard to find a mark, but this is even cleaner. > > Someone from this list sent me an email saying this seller gets HP > boxes re-made, so they look original, but are not. I must admit I have > my suspicions about this one. There is some sort of safety warning on > the rear, but the HP serial number sticker is covering that up. I > don't think HP would attach the serial number in the way shown. The > serial number reported by the firmware (3502A00477) is the same as on > the instrument. > > Also the N connector on the rear for the antenna does not look to be > up to HP standards. I measured the pin depth of the centre pin using > gages from an 85054B type N calibration kit. It only just about moves > the gages, being recessed 0.012" below where is should be. Although I > realize it is not a calibration standard, 0.012" is deeper than any > other bit of HP kit I just checked. Maybe, due to where it is, and > the fact it is not going to be used a lot, HP did not put a decent > connector there. But it looks a bit odd to me. > > I am suspecting this has been rebuilt into a new case. To be honest, > if a seller remakes the boxes, and they look and function well, I > don't have a big problem with that, although I am sure it is illegal - > at least in the UK. > > The antenna is supposed to be Andrews. I don't know whether it is, but > there's no name on it. > > But the most important thing is there are problems in the power > supplies, as the log shows - see below. > > scpi > :DIAG:LOG:READ:ALL? > Log status: 85 entries > > Log 001:20141017.00:00:00: Log cleared > Log 002:20141017.00:00:00: Power on > Log 003:20141017.00:00:00: Power on > Log 004:20141017.00:00:11: 15V is out of tolerance, value: 16.62 > Log 005:20141017.00:00:26: Self-test failed > Log 006:20141017.00:00:00: Power on > Log 007:20141017.00:00:11: 15V is out of tolerance, value: 13.78 > Log 008:20141017.00:00:27: Self-test failed > Log 009:20141017.00:00:00: Power on > Log 010:20141017.00:00:11: 15V is out of tolerance, value: 13.80 > Log 011:20141017.00:00:26: Self-test failed > Log 012:20141017.00:00:55: Power on > Log 013:20141017.00:01:06: 15V is out of tolerance, value: 13.75 > Log 014:20141017.00:01:11: Power on > Log 015:20141017.00:01:22: 15V is out of tolerance, value: 13.73 > Log 016:20141017.00:01:37: Self-test failed > Log 017:20141017.00:02:06: Power on > Log 018:20141017.00:02:17: 15V is out of tolerance, value: 13.73 > Log 019:20141017.00:02:33: Self-test failed > Log 020:20141017.00:05:55: GPS reference valid at 20141205.04:34:39 > Log 021:20141205.04:42:26: GPS lock started > Log 022:20141205.04:42:26: Primary oven current is out of tolerance, > value: 115.81 > Log 023:20141205.00:00:00: Power on > Log 024:20141205.00:00:11: 15V is out of tolerance, value: 13.66 > Log 025:20141205.00:00:27: Self-test failed > Log 026:20141205.00:00:00: Power on > Log 027:20141205.00:00:11: 15V is out of tolerance, value: 13.66 > Log 028:20141205.00:00:27: Self-test failed > Log 029:20141205.00:00:00: Power on > Log 030:20141205.00:00:01: 15V is out of tolerance, value: 13.67 > Log 031:20141205.00:00:00: Power on > Log 032:20141205.00:00:00: Power on > Log 033:20141205.00:00:00: Power on > Log 034:20141205.00:00:00: Power on > Log 035:20141205.00:00:00: Power on > Log 036:20141205.00:00:00: Power on > Log 037:20141205.00:00:00: Power on > Log 038:20141205.00:00:00: Power on > Log 039:20141205.00:05:00: GPS reference valid at 20141205.06:48:08 > Log 040:20141205.00:00:00: Power on > Log 041:20141205.00:00:00: Power on > Log 042:20141205.00:00:00: Power on > Log 043:20141205.00:00:00: Power on > Log 044:20141205.00:00:00: Power on > Log 045:20141205.00:00:00: Power on > Log 046:20141205.00:00:00: Power on > Log 047:20141205.00:00:00: Power on > Log 048:20141205.00:04:23: GPS reference valid at 20141205.07:38:39 > Log 049:20141205.07:45:54: GPS lock started > Log 050:20141205.09:39:43: Position hold mode started > Log 051:20141205.12:06:16: Holdover started, TI limit exceeded > Log 052:20141205.12:07:42: GPS lock started > Log 053:20141205.14:04:14: Holdover started, TI limit exceeded > Log 054:20141205.14:05:40: GPS lock started > Log 055:20141206.00:00:00: Power on > Log 056:20141206.00:08:32: GPS reference valid at 20141206.06:17:38 > Log 057:20141206.06:22:29: GPS lock started > Log 058:20141206.06:39:56: Holdover started, not tracking GPS > Log 059:20141206.06:43:24: GPS lock started > Log 060:20141206.00:00:00: Power on > Log 061:20141206.00:00:00: Power on > > Below is the first entries to mention the date I got it (10th December 2014). > > Log 062:20141206.00:34:10: GPS reference valid at 20141210.13:10:33 > Log 063:20141210.13:14:25: GPS lock started > Log 064:20141210.14:22:09: Holdover started, not tracking GPS > Log 065:20141210.14:25:48: GPS lock started > Log 066:20141210.00:00:00: Power on > Log 067:20141210.00:00:00: Power on > Log 068:20141210.00:00:00: Power on > Log 069:20141210.00:14:46: GPS reference valid at 20141210.15:20:33 > Log 070:20141210.15:26:26: GPS lock started > Log 071:20141210.15:36:01: Power on > Log 072:20141210.00:00:00: Power on > Log 073:20141210.00:03:07: GPS reference valid at 20141210.15:52:09 > Log 074:20141210.15:57:04: GPS lock started > Log 075:20141210.16:26:24: Holdover started, not tracking GPS > Log 076:20141210.16:30:50: GPS lock started > Log 077:20141210.00:00:00: Power on > Log 078:20141210.00:00:11: 5V is out of tolerance, value: 5.54 > Log 079:20141210.00:00:11: 15V is out of tolerance, value: 19.46 > Log 080:20141210.00:00:26: Self-test failed > Log 081:20141210.00:09:22: GPS reference valid at 20141210.18:52:33 > Log 082:20141210.18:57:27: GPS lock started > Log 083:20141210.19:02:23: Power on > Log 084:20141210.19:45:31: GPS reference valid at 20141210.19:45:37 > Log 085:20141210.19:51:18: GPS lock started > > > Below are some errors reported using :SYST:STAT? > > E-113> :SYST:STAT? > ------------------------------- Receiver Status > ------------------------------- > > SYNCHRONIZATION ........................................... [ Outputs Invalid > ] > SmartClock Mode ___________________________ Reference Outputs > _______________ > Locked TFOM 9 FFOM 3 > Recovery 1PPS TI -- > Holdover HOLD THR 1.000 us >>> Power-up: GPS acquisition Holdover Uncertainty ____________ > Predict -- > > ACQUISITION .............................................. [ GPS 1PPS Invalid > ] > Tracking: 0 ____ Not Tracking: 6 ________ Time > ____________________________ > PRN El Az UTC 12:02:29 [?] 01 Jan 1998 > * 1 -- --- GPS 1PPS Invalid: not tracking > * 6 -- --- ANT DLY 0 ns > * 9 -- --- Position ________________________ > *14 -- --- MODE Survey: 0% complete > *22 -- --- Suspended: track <4 sats > *24 -- --- INIT LAT N 51:39:03.825 > INIT LON E 0:46:36.278 > ELEV MASK 10 deg *attempting to track INIT HGT -14.04 m > (MSL) > HEALTH MONITOR ...................................................... [ ERROR > ] > Self Test: Err Int Pwr: OK Oven Pwr: OK OCXO: OK EFC: OK GPS Rcv: OK > E-113> :SYST:STAT? > ------------------------------- Receiver Status > ------------------------------- > > SYNCHRONIZATION ........................................... [ Outputs Invalid > ] > SmartClock Mode ___________________________ Reference Outputs > _______________ > Locked TFOM 9 FFOM 3 > Recovery 1PPS TI -- > Holdover HOLD THR 1.000 us >>> Power-up: GPS acquisition Holdover Uncertainty ____________ > Predict -- > > ACQUISITION .............................................. [ GPS 1PPS Invalid > ] > Tracking: 0 ____ Not Tracking: 6 ________ Time > ____________________________ > PRN El Az UTC 12:02:56 [?] 01 Jan 1998 > * 1 -- --- GPS 1PPS Invalid: not tracking > * 6 -- --- ANT DLY 0 ns > * 9 -- --- Position ________________________ > *14 -- --- MODE Survey: 0% complete > *22 -- --- Suspended: track <4 sats > *24 -- --- INIT LAT N 51:39:03.825 > INIT LON E 0:46:36.278 > ELEV MASK 10 deg *attempting to track INIT HGT -14.04 m > (MSL) > HEALTH MONITOR ...................................................... [ ERROR > ] > Self Test: Err Int Pwr: OK Oven Pwr: OK OCXO: OK EFC: OK GPS Rcv: OK > > > I expect this is going to go back to them, unless they want to make me > an offer I can't refuse. > > > Dave > <58503A-rear.jpg>_______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.