[time-nuts] 5071A with ATTENTION flashing

Li Ang 379998 at qq.com
Wed Nov 9 01:48:50 EST 2016


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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