Difference between revisions of "LeCroy 6010"

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(Created page with ""Magic Controller" = External = {{mcmaster:lecroy:2228a:ext_front.jpg?300}} <code> LeCroy 2228A TDC COM STOP COM START STOP 0 1 2 3 4 5 6 7 CLEAR 63348 </code> {{mcmaster...")
 
Line 1: Line 1:
"Magic Controller"
 
 
 
= External =
 
= External =
  
{{mcmaster:lecroy:2228a:ext_front.jpg?300}}
+
[[File:mcmaster_lecroy_2228a_ext_front.jpg|300 px]]
 
 
<code>
 
LeCroy
 
2228A
 
TDC
 
 
 
COM STOP
 
COM START
 
STOP
 
0
 
1
 
2
 
3
 
4
 
5
 
6
 
7
 
CLEAR
 
63348
 
</code>
 
 
 
{{mcmaster:lecroy:2228a:ext_top.jpg?300}}
 
 
 
<code>
 
FULL SCALE COUNT
 
TEST POINT
 
 
 
PICOSEC./COUNT SELECT
 
250
 
100
 
50
 
 
 
LeCroy
 
MODEL 2228A
 
CURRENTS
 
-6V 550 mA
 
+6V 600 mA
 
-24V 140 mA
 
+24V 25 mA
 
LeCroy RESEARCH SYSTEMS
 
  
LAM SELECT
+
  LeCroy
END OF CONVERSION (EOC)
+
  2228A
EOC AND ADDRESSED CHANNEL VALID
+
  TDC
OC AND ANY CHANNEL VALID
+
 
OFF
+
  COM STOP
 +
  COM START
 +
  STOP
 +
  0
 +
  1
 +
  2
 +
  3
 +
  4
 +
  5
 +
  6
 +
  7
 +
  CLEAR
 +
  63348
  
Q SELECT
+
[[File:mcmaster_lecroy_2228a_ext_top.jpg|300 px]]
EOC
 
EOC AND ADDRESSED CHANNEL VALID
 
EOC AND ANY CHANNEL VALID
 
  
CAUTION
+
  FULL SCALE COUNT
CRATE POWER SHOULD BE TURNED OFF DURING INSERTION AND REMOVAL OF UNIT
+
  TEST POINT
TO AVOID POSSIBLE DAMAGE CAUSED BY MOMENTARY MISALIGNMENT OF CONTACTS
+
 
</code>
+
  PICOSEC./COUNT SELECT
 +
  250
 +
  100
 +
  50
 +
 
 +
  LeCroy
 +
  MODEL 2228A
 +
  CURRENTS
 +
  -6V 550 mA
 +
  +6V 600 mA
 +
  -24V 140 mA
 +
  +24V 25 mA
 +
  LeCroy RESEARCH SYSTEMS
 +
 
 +
  LAM SELECT
 +
  END OF CONVERSION (EOC)
 +
  EOC AND ADDRESSED CHANNEL VALID
 +
  OC AND ANY CHANNEL VALID
 +
  OFF
 +
 
 +
  Q SELECT
 +
  EOC
 +
  EOC AND ADDRESSED CHANNEL VALID
 +
  EOC AND ANY CHANNEL VALID
 +
 
 +
  CAUTION
 +
  CRATE POWER SHOULD BE TURNED OFF DURING INSERTION AND REMOVAL OF UNIT
 +
  TO AVOID POSSIBLE DAMAGE CAUSED BY MOMENTARY MISALIGNMENT OF CONTACTS
  
{{mcmaster:lecroy:2228a:ext_btm.jpg?300}}
+
[[File:mcmaster_lecroy_2228a_ext_btm.jpg|300 px]]
  
  
 
= Internal =
 
= Internal =
  
{{mcmaster:lecroy:2228a:int_top.jpg?300}}
+
[[File:mcmaster_lecroy_2228a_int_top.jpg|300 px]]
  
{{mcmaster:lecroy:2228a:int_btm.jpg?300}}
+
[[File:mcmaster_lecroy_2228a_int_btm.jpg|300 px]]
  
 
Key ICs:
 
Key ICs:
 
* MOTOROLA MC10102P: input quad 2 input NOR gate
 
* MOTOROLA MC10102P: input quad 2 input NOR gate
''' mixes test trigger?
+
* mixes test trigger?
 
* RCA CA3046: NPN transistor array
 
* RCA CA3046: NPN transistor array
 
* NE NE521N: dual differential comparator / sense amp
 
* NE NE521N: dual differential comparator / sense amp
Line 82: Line 76:
  
 
Slot 9 (broken knob)
 
Slot 9 (broken knob)
<code>
+
  CH0: 0x000632
CH0: 0x000632
+
  CH1: 0x000644
CH1: 0x000644
+
  CH2: 0x000632
CH2: 0x000632
+
  CH3: 0x000358
CH3: 0x000358
+
  CH4: 0x000637
CH4: 0x000637
+
  CH5: 0x000525
CH5: 0x000525
+
  CH6: 0x00062A
CH6: 0x00062A
+
  CH7: 0x00063A
CH7: 0x00063A
 
</code>
 
  
 
Slot 11 (good knob)
 
Slot 11 (good knob)
<code>
+
  CH0: 0x000699
CH0: 0x000699
+
  CH1: 0x000691
CH1: 0x000691
+
  CH2: 0x00069D
CH2: 0x00069D
+
  CH3: 0x000353
CH3: 0x000353
+
  CH4: 0x000696
CH4: 0x000696
+
  CH5: 0x00069F
CH5: 0x00069F
+
  CH6: 0x00068C
CH6: 0x00068C
+
  CH7: 0x000686
CH7: 0x000686
 
</code>
 
  
 
Both units seem to have constant offset errors, possibly the test pattern generator.  Also, CH3 is flaky on both units...coincidence?
 
Both units seem to have constant offset errors, possibly the test pattern generator.  Also, CH3 is flaky on both units...coincidence?
Line 109: Line 99:
 
Ran a 14 hour burn in test in test mode (slot 11 / good knob):
 
Ran a 14 hour burn in test in test mode (slot 11 / good knob):
  
{{:mcmaster:lecroy:2228a:2015-06-04_n11_cal_all.png?300|}}
+
[[File:mcmaster_lecroy_2228a_2015-06-04_n11_cal_all.png|300 px]]
  
 
You can see considerable drift on channel 3 (yellow), the channel with a bad reading.  Other channels were pretty stable, within +/- 1 DN over the entire period.  Swapped some ICs around and issue seems to have gone away.
 
You can see considerable drift on channel 3 (yellow), the channel with a bad reading.  Other channels were pretty stable, within +/- 1 DN over the entire period.  Swapped some ICs around and issue seems to have gone away.
Line 115: Line 105:
 
More measurements after swapping:
 
More measurements after swapping:
  
{{:mcmaster:lecroy:2228a:2015-06-04_n11_03_cal_all.png?300|}}
+
[[File:mcmaster_lecroy_2228a_2015-06-04_n11_03_cal_all.png|300 px]]
  
 
Took about 1200 seconds (20 min) to settle.
 
Took about 1200 seconds (20 min) to settle.
  
Test code: https:''github.com/JohnDMcMaster/uvscada/blob/master/lecroy_6010/2228a_cal.py
+
Test code: https://github.com/JohnDMcMaster/uvscada/blob/master/lecroy_6010/2228a_cal.py

Revision as of 06:43, 9 March 2019

External

Mcmaster lecroy 2228a ext front.jpg

 LeCroy
 2228A
 TDC
 
 COM STOP
 COM START
 STOP
 0
 1
 2
 3
 4
 5
 6
 7
 CLEAR
 63348

Mcmaster lecroy 2228a ext top.jpg

 FULL SCALE COUNT
 TEST POINT
 
 PICOSEC./COUNT SELECT
 250
 100
 50
 
 LeCroy
 MODEL 2228A
 CURRENTS
 -6V 550 mA
 +6V 600 mA
 -24V 140 mA
 +24V 25 mA
 LeCroy RESEARCH SYSTEMS
 
 LAM SELECT
 END OF CONVERSION (EOC)
 EOC AND ADDRESSED CHANNEL VALID
 OC AND ANY CHANNEL VALID
 OFF
 
 Q SELECT
 EOC
 EOC AND ADDRESSED CHANNEL VALID
 EOC AND ANY CHANNEL VALID
 
 CAUTION
 CRATE POWER SHOULD BE TURNED OFF DURING INSERTION AND REMOVAL OF UNIT
 TO AVOID POSSIBLE DAMAGE CAUSED BY MOMENTARY MISALIGNMENT OF CONTACTS

Mcmaster lecroy 2228a ext btm.jpg


Internal

Mcmaster lecroy 2228a int top.jpg

Mcmaster lecroy 2228a int btm.jpg

Key ICs:

  • MOTOROLA MC10102P: input quad 2 input NOR gate
  • mixes test trigger?
  • RCA CA3046: NPN transistor array
  • NE NE521N: dual differential comparator / sense amp
  • LeCroy SC100: ADC?

2015-06-04 repair

11 bit ADC (0x600 full range) but values were as follows for the two units I tested:

Slot 9 (broken knob)

 CH0: 0x000632
 CH1: 0x000644
 CH2: 0x000632
 CH3: 0x000358
 CH4: 0x000637
 CH5: 0x000525
 CH6: 0x00062A
 CH7: 0x00063A

Slot 11 (good knob)

 CH0: 0x000699
 CH1: 0x000691
 CH2: 0x00069D
 CH3: 0x000353
 CH4: 0x000696
 CH5: 0x00069F
 CH6: 0x00068C
 CH7: 0x000686

Both units seem to have constant offset errors, possibly the test pattern generator. Also, CH3 is flaky on both units...coincidence?

Ran a 14 hour burn in test in test mode (slot 11 / good knob):

Mcmaster lecroy 2228a 2015-06-04 n11 cal all.png

You can see considerable drift on channel 3 (yellow), the channel with a bad reading. Other channels were pretty stable, within +/- 1 DN over the entire period. Swapped some ICs around and issue seems to have gone away.

More measurements after swapping:

Mcmaster lecroy 2228a 2015-06-04 n11 03 cal all.png

Took about 1200 seconds (20 min) to settle.

Test code: https://github.com/JohnDMcMaster/uvscada/blob/master/lecroy_6010/2228a_cal.py