Sub-System &
Test Date
|
Repaired?
|
Module Serial
Number
|
Module Type
|
Problem Channel
|
Nature of Problem
|
EMCAL
9/21/98
|
Yes
5/99
|
B52653
|
1461N104
|
B52653_01
|
Trips as a Voltage Error if the Voltage is set between 0 and -250V;
yields higher than normal currents at low voltages
|
EMCAL
10/15/98
|
Yes
5/99
|
B68088
|
1461N104
|
B68088_03
|
Cannot be set to a voltage between 0 and -130 V; triying to do
so yields a voltage of -130V, minimum
|
EMCAL
10/19/98
|
Yes
5/99
|
B52668
|
1461N104
|
---
|
The LED on the module which signals that the HV is on, ramping,
etc., flickers and occassionally fails to light
|
BB
11/13/98
|
Yes
5/99
|
B50953
(prototype)
|
1461N006
|
B50953_01 & B50953_02
|
The currents output by these channels is typically 250 microamps
higher than what was produced by other modules of this type with the same
loads
|
BB
11/13/98
|
Yes
5/99
|
B67563
|
1461N006
|
B67563_02
|
Upon being enabled, this channel immediately rises to about -2900V,
regardless of the Demand Voltage
|
RICH
11/16/98
|
Yes
5/99
|
B67979
|
1461N100
|
B67979_03
|
This channel yields lower currents than other modules of this type
with the same voltages and loads.
|
PC
3/31/99
|
No
|
B51077
|
1469P
|
All non-bulk channels
|
All of the the non-bulk channels of this module would, when HV
was on, report currents ranging from 5 to 95 microamps, regardless of the
load applied or whether the channel was enabled or not. The reported
currents would waver between these limits.
|
DC
2/17/99
|
No
|
B67732
|
1469N
|
B67732_00
|
Fails to deliver current to its load, and voltage cannot be detected
on its pin.
|
DC
2/17/99
|
No
|
B67739
|
1469N
|
---
|
The bulk coonectors of this module has pins which seem to be extended
or bent, indicating that the internal solder connections may not be acceptable.
|
DC
2/17/99
|
No
|
B67731
|
1469N
|
---
|
The bulk connectors of this module has pins which seems to be extended
or bent, indicating that the internal solder connnections may not be acceptable.
|
DC
2/18/99
|
No
|
B67768
|
1469N
|
---
|
The bulk connectors of this module has pins which seem to be extended
or bent, indicating that the internal solder connections may not be acceptable.
|
DC
2/18/99
|
No
|
B67725
|
1469N
|
B67725_BS_02
|
Occasionally this bulk supply would deliver a voltage ~5V less
than the demand, despite the fact that the MVDZ was less than 3V.
|
DC
2/18/99
|
No
|
B67772
|
1469N
|
B67772_BS_00
|
This bulk supply tripped a few too many times during testing.
|
DC
2/18/99
|
No
|
B67727
|
1469N
|
---
|
The bulk connectors of this module has pins which seem to be extended
or bent, indicating that the internal solder connections may not be acceptable.
|
DC
2/18/99
|
No
|
B67749
|
1469N
|
---
|
The bulk connectors of this module has pins which seem to be extened
or bent, indicating that then internal solder connections my not be acceptable.
|
DC
4/22/99
|
No
|
B68009
|
1471N
|
B68009_00 &
B68009_02
|
Channel B68009_00 consistantly produced a current that was more
than 1 uA greater than other channels with identical loads and voltages.
B68009_02 produced a voltage that was more than 4V greater than demand,
while its MVDZ was 1.1 V.
|
MuID
4/15/99
|
No
|
B68147
|
1471P
|
B68147_03
|
This channel consistently produced voltages more than 5V greater
than demand, while its MVDZ was set at 1.1V.
|
MuID
4/15/99
|
No
|
B68018
|
1471P
|
B68018_07
|
When HV was on and the Demand Voltage set to 0, this channel produced
more than 48 V.
|
TEC
4/27/99
|
No
|
B68139
|
1471N
|
B68139_01 & B68139_05
|
B68139_01 frequently reported a voltage 3-4 Volts greater than
demand, while the MVDZ was set to 1.1 V. Channel B68139_05 constantly
tripped during long-term testing, starting with Peak Current Trips, then
Voltage Supply Limit Trips, then settling on Voltage Chance Rate Trips.
|
TEC
4/27/99
|
No
|
B68033
|
1471N
|
B68033_00
|
With the HV ON and channel B68033_00 enabled, this channel reported
a -41.3 voltage when the demand was for zero volts.
|
MuID
5/27/99
|
No
|
B68372
|
1471P
|
B68372_01
|
This channel incurred 6 Peak Current Trips during long term testing,
which is excessive, considering the very low number of trips developed
during the tests of the other channels.
|
DC
6/02/99
|
No
|
B68943
|
1471N
|
B68943_01
|
This channel incurred 18 Peak Current Trips during long term testing,
which is excessive, considering the very low number of trips developed
during the tests of the other channels.
|
DC
6/03/99
|
No
|
B67826
|
1471N
|
B67826_02
|
This channel's voltage was consistently 4 Volts higher than demand,
while its MVDZ was set to 1.1 V.
|
MuID
6/07/99
|
No
|
B68149
|
1471P
|
B68149_03 & B68149_05
|
Both these channels had an excessive number of Peak Current trips
during testing (8 and 21, repectively).
|
BB
6/24/99
|
No
|
B67657
|
1461N006
|
B67657_02
|
After functioning briefly in the PHENIX Experimental Hall, this
channel became damaged somwhow. It now trips (either a Voltage Error or
Current Trip) for any voltage greater than -200V, and, if set below -200V,
only provides a quarter or less of the Demand Voltage.
|
MuID
7/13/99
|
No
|
B68393
|
1471P
|
B68393_02 & B68393_06
|
These channels tripped excessively during long term testing. Channel
2 had 15 seperate Peak Current violations, and channel 6 had 13. Both were
using the same loads, voltages and Peak Current trips as other channels
of this type (which reported no problems).
|
DC
7/22/99
|
No
|
B68370
|
1471N
|
B68370_01 & B68370_03
|
These channels produced voltages higher than required during long-term
testing. The voltages were elevated 5 and 11 volts, respectively, while
the MVDZ was set at 1.2 V.
|
DC
10/12/99
|
No
|
B67766
|
1469N
|
nb.19 of 24
|
Channel 19/24 in bulk 2 does not provide output voltage at the
backplane pin. However, a correct "measured voltage" can be read from
the crate.
|
DC
11/03/99
|
No
|
B51245
|
1469N
|
pin too short
|
pin in 2nd bulk too short - no contact to any cable.
|
DC
01/24/2000/
|
No
|
B51184
|
1469N
|
developed no voltage output at 2nd bulk, pin 8
|
developed no voltage output at 2nd bulk, pin 8. Seems that
the relais is faulty, since voltage can be 'measured' by
the LeCroy system.
|