[time-nuts] 5071A with ATTENTION flashing
Scott McGrath
scmcgrath at gmail.com
Wed Nov 9 07:52:48 EST 2016
that's telling you that the CBT oven is not up to temp so you could have a failed heater in the tube or the oven controller is malfunctioning
The former well you need a new tube which symmetricom will be happy to sell you for a 5 figure price tag.
The latter is limited by your repair skills and parts and data availability
Content by Scott
Typos by Siri
> On Nov 9, 2016, at 7:42 AM, Li Ang <379998 at qq.com> wrote:
>
> According to the Log, "CBT Oven Err: -9.55 C" might be something wrong. However, I can't find the correct range in the manual. Does anyone have the information about this parameter?
>
>
> Regards
> Li Ang
>
>
>
>
> ------------------ Original ------------------
> From: "Li Ang";<379998 at qq.com>;
> Date: Wed, Nov 9, 2016 02:48 PM
> To: "Tom Van Baak"<tvb at leapsecond.com>; "Discussion of precise time and frequency measurement"<time-nuts at febo.com>;
>
> Subject: Re: [time-nuts] 5071A with ATTENTION flashing
>
>
>
> Hi Tom
>
> I have collected the log from it. Log level is service. The 9.2G pll pass the test today. The log during the power-up process is also included.
>
>
> Regards
>
> Li Ang / BI7LNQ
>
> -------------------------------------
>
>
>
> scpi >
>
> MJD 0 02:02:18
>
> CBT ID: 3128A00642(H)
>
> Status summary: Fatal Error (see Log)
>
> Power source: AC
>
> Log status: One entry
>
>
> Freq Offset: 0e-15 Osc. control: -9.56 %
>
> RF amplitude 1: 6.3 % RF amplitude 2: 6.3 %
>
> Zeeman Freq: 39949 Hz C-field curr: 12.213 mA
>
> E-multiplier: 2553 V Signal Gain: 14.4 %
>
>
> CBT Oven: 0.0 V CBT Oven Err: -9.55 C
>
> Osc. Oven: -9.1 V Ion Pump: 0.4 uA
>
> HW Ionizer: -0.1 V Mass spec: 12.3 V
>
> SAW Tuning: 0.0 V DRO Tuning: 7.3 V
>
> 87MHz PLL: 0.8 V uP Clock PLL: 1.8 V
>
> +12V supply: 12.3 V -12V supply: -12.3 V
>
> +5V supply: 5.4 V Thermometer: 46.2 C
>
>
>
> scpi >
>
> scpi > ?
>
> E-103> exit
>
> E-113>
>
> E-113> Log status: One entry
>
>
> Log 000 of MJD 0 00:12:40: Low Cs signal (60) with max Emult
>
>
> PASS: CBT register test
>
> PASS: CBT window comp test
>
> PASS: CBT therm test
>
> PASS: CBT Cs oven test
>
> PASS: CBT hw ion test
>
> PASS: CBT mass spec test
>
> PASS: CPU RTDS test
>
> PASS: CPU clock locked test
>
> PASS: DDFS register test
>
> PASS: 87MHz PLL test
>
> PASS: 9.2 GHz PLL test
>
> PASS: Servo register test
>
> PASS: Servo convertor timeout test
>
> PASS: Interface register test
>
> PASS: Interface abus test
>
> PASS: Pps register test
>
> PASS: Pps interrupt test
>
> PASS: power logic signals test
>
> PASS: CBT register test
>
> PASS: CBT window comp test
>
> PASS: CBT therm test
>
> PASS: CBT Cs oven test
>
> PASS: CBT hw ion test
>
> PASS: CBT mass spec test
>
> PASS: CPU RTDS test
>
> PASS: CPU clock locked test
>
> PASS: DDFS register test
>
> PASS: 87MHz PLL test
>
> PASS: 9.2 GHz PLL test
>
> PASS: Servo register test
>
> PASS: Servo convertor timeout test
>
> PASS: Interface register test
>
> PASS: Interface abus test
>
> PASS: Pps register test
>
> PASS: Pps interrupt test
>
> PASS: power logic signals test
>
> PASS: CBT register test
>
> PASS: CBT window comp test
>
> PASS: CBT therm test
>
> PASS: CBT Cs oven test
>
> PASS: CBT hw ion test
>
> PASS: CBT mass spec test
>
> PASS: CPU RTDS test
>
> PASS: CPU clock locked test
>
> PASS: DDFS register test
>
> PASS: 87MHz PLL test
>
> PASS: 9.2 GHz PLL test
>
> PASS: Servo register test
>
> PASS: Servo convertor timeout test
>
> PASS: Interface register test
>
> PASS: Interface abus test
>
> PASS: Pps register test
>
> PASS: Pps interrupt test
>
> PASS: power logic signals test
>
> PASS: CBT register test
>
> PASS: CBT window comp test
>
> PASS: CBT therm test
>
> PASS: CBT Cs oven test
>
> PASS: CBT hw ion test
>
>
> E-113>
>
> E-113> PASS: CBT register test
>
> PASS: CBT window comp test
>
> PASS: CBT therm test
>
> PASS: CBT Cs oven test
>
> PASS: CBT hw ion test
>
> PASS: CBT mass spec test
>
> PASS: CPU RTDS test
>
> PASS: CPU clock locked test
>
> PASS: DDFS register test
>
> PASS: 87MHz PLL test
>
> PASS: 9.2 GHz PLL test
>
> PASS: Servo register test
>
> PASS: Servo convertor timeout test
>
> PASS: Interface register test
>
> PASS: Interface abus test
>
> PASS: Pps register test
>
> PASS: Pps interrupt test
>
> PASS: power logic signals test
>
> PASS: CBT register test
>
> PASS: CBT window comp test
>
> PASS: CBT therm test
>
> PASS: CBT Cs oven test
>
> PASS: CBT hw ion test
>
> PASS: CBT mass spec test
>
> PASS: CPU RTDS test
>
> PASS: CPU clock locked test
>
> PASS: DDFS register test
>
> PASS: 87MHz PLL test
>
> PASS: 9.2 GHz PLL test
>
> PASS: Servo register test
>
> PASS: Servo convertor timeout test
>
> PASS: Interface register test
>
> PASS: Interface abus test
>
> PASS: Pps register test
>
> PASS: Pps interrupt test
>
> PASS: power logic signals test
>
> PASS: CBT register test
>
> PASS: CBT window comp test
>
> PASS: CBT therm test
>
> PASS: CBT Cs oven test
>
> PASS: CBT hw ion test
>
> PASS: CBT mass spec test
>
> PASS: CPU RTDS test
>
> PASS: CPU clock locked test
>
> PASS: DDFS register test
>
> PASS: 87MHz PLL test
>
> PASS: 9.2 GHz PLL test
>
> PASS: Servo register test
>
> PASS: Servo convertor timeout test
>
> PASS: Interface register test
>
> PASS: Interface abus test
>
> PASS: Pps register test
>
> PASS: Pps interrupt test
>
> PASS: power logic signals test
>
> PASS: CBT register test
>
> PASS: CBT window comp test
>
> PASS: CBT therm test
>
> PASS: CBT Cs oven test
>
> PASS: CBT hw ion test
>
> PASS: CBT mass spec test
>
> PASS: CPU RTDS test
>
> PASS: CPU clock locked test
>
> PASS: DDFS register test
>
> PASS: 87MHz PLL test
>
> PASS: 9.2 GHz PLL test
>
> PASS: Servo register test
>
> PASS: Servo convertor timeout test
>
> PASS: Interface register test
>
> PASS: Interface abus test
>
> PASS: Pps register test
>
> PASS: Pps interrupt test
>
> PASS: power logic signals test
>
> PASS: CBT register test
>
> PASS: CBT window comp test
>
> PASS: CBT therm test
>
> PASS: CBT Cs oven test
>
> PASS: CBT hw ion test
>
> PASS: CBT mass spec test
>
> PASS: CPU RTDS test
>
> PASS: CPU clock locked test
>
> PASS: DDFS register test
>
> PASS: 87MHz PLL test
>
> PASS: 9.2 GHz PLL test
>
> PASS: Servo register test
>
> PASS: Servo convertor timeout test
>
> PASS: Interface register test
>
> PASS: Interface abus test
>
> PASS: Pps register test
>
> PASS: Pps interrupt test
>
> PASS: power logic signals test
>
> PASS: CBT register test
>
> PASS: CBT window comp test
>
> PASS: CBT therm test
>
> PASS: CBT Cs oven test
>
> PASS: CBT hw ion test
>
>
> E-113>
>
> E-113> scpi >
>
> scpi >
>
> Performing hardware tests
>
> PASS: CBT register test
>
> PASS: DDFS register test
>
> PASS: Servo register test
>
> PASS: Interface register test
>
> PASS: Pps register test
>
> Warming up
>
> Osc. oven is up
>
>
> MJD 0 00:00:29
>
> CBT ID: 3128A00642(H)
>
> Status summary: Warming up
>
> Power source: AC
>
> Log status: One entry
>
>
> Freq Offset: 0e-15 Osc. control: -9.56 %
>
> RF amplitude 1: 6.3 % RF amplitude 2: 6.3 %
>
> Zeeman Freq: 39949 Hz C-field curr: 12.213 mA
>
> E-multiplier: 1524 V Signal Gain: 14.4 %
>
>
> CBT Oven: 20.6 V CBT Oven Err: -9.55 C
>
> Osc. Oven: -9.0 V Ion Pump: 0.4 uA
>
> HW Ionizer: 1.0 V Mass spec: 12.3 V
>
> SAW Tuning: 0.0 V DRO Tuning: 7.3 V
>
> 87MHz PLL: 0.8 V uP Clock PLL: 1.8 V
>
> +12V supply: 12.2 V -12V supply: -12.2 V
>
> +5V supply: 5.4 V Thermometer: 45.0 C
>
>
>
> scpi > Cs oven is up
>
> F(z) = 39948.9 Hz
>
> Low Cs beam signal = 3
>
> Raising emult voltage...
>
> Low Cs signal (37) with max Emult
>
> Fractional freq. offset is -0.000000e+00
>
> Fatal Error (see Log)
>
>
> scpi >
>
> scpi > Log status: 2 entries
>
>
> Log 000 of MJD 0 00:12:40: Low Cs signal (60) with max Emult
>
> Log 001 of MJD 0 00:09:59: Low Cs signal (37) with max Emult
>
>
>
> MJD 0 00:13:46
>
> CBT ID: 3128A00642(H)
>
> Status summary: Fatal Error (see Log)
>
> Power source: AC
>
> Log status: 2 entries
>
>
> Freq Offset: 0e-15 Osc. control: -9.56 %
>
> RF amplitude 1: 6.3 % RF amplitude 2: 6.3 %
>
> Zeeman Freq: 39949 Hz C-field curr: 12.213 mA
>
> E-multiplier: 2553 V Signal Gain: 14.4 %
>
>
> CBT Oven: 0.0 V CBT Oven Err: -8.22 C
>
> Osc. Oven: -9.1 V Ion Pump: 1.0 uA
>
> HW Ionizer: 0.0 V Mass spec: 12.2 V
>
> SAW Tuning: 0.0 V DRO Tuning: 7.3 V
>
> 87MHz PLL: 0.8 V uP Clock PLL: 1.7 V
>
> +12V supply: 12.3 V -12V supply: -12.3 V
>
> +5V supply: 5.4 V Thermometer: 46.4 C
>
>
>
> scpi > Log status: 2 entries
>
>
> Log 000 of MJD 0 00:12:40: Low Cs signal (60) with max Emult
>
> Log 001 of MJD 0 00:09:59: Low Cs signal (37) with max Emult
>
>
>
> ---Original---
> From: "Tom Van Baak"<tvb at LeapSecond.com>
> Date: 2016/11/4 00:42:46
> To: "Discussion of precise time and frequency measurement"<time-nuts at febo.com>;
> Subject: Re: [time-nuts] 5071A with ATTENTION flashing
>
>
> Hi Li,
>
> The "Low cs signal with max Emult" is the classic error indicating it's out of gas. That's a bad sign. But the "9.2GHz PLL test 10.3v" is something else. So maybe there's hope? Or maybe you have two big problems instead of one. Rick might know.
>
> For additional information, connect a PC to the serial port and capture the diagnostic information. Right after power up, press TOP -> CONFIG -> LOG -> SERVICE to set the unit into verbose diagnostic mode. You should see lines print every now and then as it undergoes self test and calibration.
>
> You can also press TOP -> INFO -> PRINT to get a nicely formatted summary. Or TOP -> LOG -> PRINT to get the entire log history. That sometimes has lots of clues. The advantage of using the serial port is you get a permanent record of all this information. Viewing all this by the LCD screen can be tedious.
>
> There's more information in 05071-90040, the 5071A Assembly-Level Service Manual, copies of which are on the web. Also 05071-90041, Operating and Programming Manual.
>
> /tvb
>
> ----- Original Message -----
> From: "Li Ang" <379998 at qq.com>
> To: "time-nuts" <time-nuts at febo.com>
> Sent: Thursday, November 03, 2016 8:10 AM
> Subject: [time-nuts] 5071A with ATTENTION flashing
>
>
>> Hi
>> Today I met one HP 5071A with option 001 at one secondhand equipment company. This one can not enter CONTINUOUS OPERATION status, the ATTENTION led flashes.
>> There is a "Low cs signal with max Emult" error in the log. I have run the self-test, and it stopped at "9.2GHz PLL test 10.3v". I can only remember the the pump current was 0.8uA or less, C-filed was about 12mA.
>> The seller is asking for about 4000$, I am wondering if it's repairable. Since it is a "HP" branded 5071A with 001 option, I do not know if the Cs tube is dying or not, according to the two current values?
>> How do I know one 5071A/5061/5062 is dying or is still in good health by the readings?
>>
>>
>> Thanks
>>
>>
>> de BI7LNQ
>
>
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