<!-- Title: 12:56:54  Fri May  4 2001 -->
<!-- Crewchief: Michele Gallinaro -->
<!-- Op1: Koji Terashi -->
<!-- Op2: Konstantin Kotelnikov -->
<!-- Op3: &nbsp; -->
<!-- Op4: &nbsp; -->
<!-- Op5: &nbsp; -->
<!-- Op6: &nbsp; -->
<!-- Notes: -->
<pre>First BSC E-log</pre>


<!-- Date: Tue May 8 20:51:34 2001 -->
<pre>BSC-2: East and West stations. 
 
Added bleeder resistor to signal output at PMT base. 
Bleeder resistor is 100k, and connected to the signal  
output through a T. 
 
BSC-3 and BSC-4 stations MUST NOT have a bleeder  
resistor at the signal output (input to ADMEM  
is through a `standard' CEM transition board).</pre>
<!-- Author: A. Bocci, M. Gallinaro -->


<!-- Date: Wed May 9 11:31:46 2001 -->
<pre>BSC-1: BSC-01 PMT (ZA7176) 
I cannot see any signal out of PMT (HV up to 1750V). 
Could it be a bad connection? 
</pre>
<!-- Author: M.Gallinaro -->


<!-- Date: Wed May 9 13:10:09 2001 -->
<pre>Checked BSC&lt;-&gt;PMT correspondance: 
 
Station	PMT# 	Voltage 
------------------------ 
BSC2W-1  47(?)	  1630 
BSC2W-2  50	  1650 
BSC3W-1  19	  1560 
BSC3W-2	 39	  1560 
BSC4W-1  49	  1680 
BSC4W-2  46	  1700 
 
BSC2E-1   6	  1640 
BSC2E-2	 38	  1650 
BSC3E-1	 43	  1760 
BSC3E-2	 33	  1660 
 
HV settings are according to RU tests.</pre>
<!-- Author: A.Bocci, M.Gallinaro -->


<!-- Date: Wed May 9 16:26:05 2001 -->
Tested again a new send program for beam loss measurement, which is running in the 6U VME crate CLC_01.  
<br> 
Konstantin and I tested the new version of the program before and it succeeded then. But, when Dmitri tried to include our changes into his code, he failed running it on the crate.  
So, I modified the latest Dmitri's code that is running in the crate now. Then, the modified code worked well.  
 
<!-- Author: Koji -->


<!-- Date: Wed May 16 20:39:48 2001 -->
<pre>BSC-1 discriminator threshold set to 15 mV (972mV on the probe)</pre>
<!-- Author: M. Gallinaro -->


<!-- Date: Thu May 17 18:00:00 2001 -->
<pre>Changed the HV settings for BSC-1 in the configuration file. 
 
File: D:$B!@(BHV_TEST$B!@(BCLC_Forward_Crate.txt 
 
HV Ch.  Counter   OLD    NEW 
-------------------------------- 
  0     BSC1-W1   1640   1600 
  1     BSC1-W2   1400   1250 
  2     BSC1-W3   1400   1500 
  3     BSC1-W4   1350   1300 
  4     BSC1-E1   1200   1450 
  5     BSC1-E2   1430   1400 
  6     BSC1-E3   1380   1600 
  7     BSC1-E4   1560   1250 
-------------------------------- 
 
The amount of changes were determined from the efficiency curves 
as a function of high voltage. The new HV values are at about  
50V above the knee of the plateau.</pre>
<!-- Author: Koji -->


<!-- Date: Sun Jun 10 14:59:03 2001 -->
Got a call from CR that the BSC HV had an alarm on 6/9/01 (Sat) 4:30pm. Found that three HV channels were OFF (ch 06, 16 and 20 
in slot 7 of crate 1). I turned them ON manually.
<!-- Author: Koji -->


<!-- Date: Sun Jun 10 15:03:46 2001 -->
 
Called from CH that B0PLOS and B0ALOS were not updated in ACNET  
on 6/10/01 (Sun) from 4am.  
I checked the b0clc01 crate and found that the program was  
not running. I tried to login the crate but I couldn't because 
the crate was hanged up. I reset the crate, then the beam losses 
were back.
<!-- Author: Koji -->


<!-- Date: Sun Jun 10 15:08:00 2001 -->
<pre>Called from CR that there were several BSC alarms on 6/10/01 
(Sun) around 1pm. It seems BSC alarms appeared on the HV display 
and then they were gone quickly. And it happened several times  
during a short period of time. I checked the HV PC, but didn't 
find any problems (log file didn't have anything). Maybe I need 
to ask Andrea to look into it...</pre>
<!-- Author: Koji -->


<!-- Date: Thu Jun 14 12:43:03 2001 -->
<pre>BSC-1 noise level: 
 
Conditions:  Threshold at 15mV/HV ON/no beam/no gate 
Measurement: flat cable from Transition  
	     board -&gt; ECL-NIM converter -&gt; scaler 
Results: 
Channel  Counter Cts/min  Rate(Hz) 
   1	  1E	  256	   4.3 
   2	  2E	    6	   0.1 
   3	  3E	    1	   0.0 
   4	  4E	    2	   0.0 
   5	  1W	  143	   2.4 
   6	  2W	   55	   0.9 
   7      3W	  482	   8.0 
   8      4W	   72      1.2</pre>
<!-- Author: M. Gallinaro -->


<!-- Date: Fri Jun 15 14:49:05 2001 -->
<pre>Beam Shower Counters HV trips: 
 
3 channels for BSCs show frequent HV trips. 
I lower the voltages. 
 
Ch  Vset  Vmon   Status   CHANGED TO:           Detector 
 8  1620  941.2    Off  -&gt;  1400 Volts		BSC2 W-1 
12  1540  949.9    Off  -&gt;  1300 Volts		BSC3 W-1 
17  1660  973.6    Off  -&gt;  1400 Volts		BSC4 W-2</pre>
<!-- Author: M. Gallinaro -->


<!-- Date: Fri Jun 15 15:12:37 2001 -->
<pre>BSC-1 rate check without beam: 
 
checked the rate for BSC-1 counters when there is no beam. 
1. detached the BC gate cable from the 2nd transition board. 
2. runs the program as usual. 
3. analyzed the data from log file (DPMdata.txt). 
4. after the test, attached the BC gate cable. 
 
*Dicreminator threshold = 15mV 
*HV settings for BSC-1 are same as what you see above on  
 "Thu May 17 18:00:00". 
 
counter     Loss              Collision 
--------------------------------------------------- 
W1          0.71 +/- 0.09     0.87 +/- 0.10       
W2          0.21 +/- 0.05     0.29 +/- 0.06 
W3          2.8  +/- 0.2      3.6  +/- 0.2 
W4          0.29 +/- 0.06     0.53 +/- 0.08 
 
E1          1.4  +/- 0.1      2.0  +/- 0.2 
E2          0.05 +/- 0.02     0.07 +/- 0.03 
E3          0.05 +/- 0.02     0.01 +/- 0.01 
E4          0                 0.01 +/- 0.01     
---------------------------------------------------      
 
W3 counter shows high rate but it would be due to high HV.</pre>
<!-- Author: Koji -->


<!-- Date: Sat Jun 16 13:52:54 2001 -->
<pre>At 11am, found some HV channels for the BSC were off due to 
trips. I didn't get any call from control room(?). 
 
Lowered the corresponding HV channels by 200V for BSC2, 3 and 4. 
For the BSC1-E3 (Ch 6), it was lowered by 50V to be still above 
the plateau.  
 
Ch  Detector  V0set  Vmon   Status  ======&gt; 
 6  BSC1-E3   1650   965.0  Off     Changed  1600 
 9  BSC2-W2   1600   924.6  Off     to       1400   
11  BSC2-E2   1670   928.6  Off              1470  
14  BSC3-E1   1680   952.2  Off              1480 
15  BSC3-E2   1630   975.8  Off              1430   
16  BSC4-W1   1720   949.4  Off              1520  
 
Also, these new voltages were set in the configuration file 
D:HV_TESTCLC_Forward_Crate.txt.</pre>
<!-- Author: Koji -->


<!-- Date: Sat Jun 16 14:10:13 2001 -->
<pre>Rick and I tried to perform QIE calibration for the BSC ADMEMs 
located in slots 16 and 17 in CLC_00 crate. We found no pedestals 
for QIE channels 1, 2 and 3 in slot 16, and also the RMS for 
QIE channel 1 is strange. The result is as follows; 
 
 ADMEM  QIE  CAP #EVENTS AVE_RANGE  MEAN   RMS  
   16    0    0    1000   1.0      327.0   3.5 
   16    0    1    1000   1.0      324.8   3.5 
   16    0    2    1000   1.0      326.6   3.5 
   16    0    3    1000   1.0      330.1   3.6 
   16    1    0    1000   0.0        0.0   0.0 
   16    1    1    1000   0.0        0.0   0.0 
   16    1    2    1000   0.0        0.0   0.0 
   16    1    3    1000   0.0        0.0   0.0 
   16    2    0    1000   0.0        0.0   0.0 
   16    2    1    1000   0.0        0.0   0.0 
   16    2    2    1000   0.0        0.0   0.0 
   16    2    3    1000   0.0        0.0   0.0 
   16    3    0    1000   0.0        0.0   0.0 
   16    3    1    1000   0.0        0.0   0.0 
   16    3    2    1000   0.0        0.0   0.0 
   16    3    3    1000   0.0        0.0   0.0 
 
We replaced three CAFE cards corresponding to channels 1, 2 and  
3, and looked at the pedestals again. The result was same as 
before. So, we concluded that the transition board is the source 
of this problem. I think we need to replace the board soon,  
otherwise the data from the BSC1-E counters cannot be used.</pre>
<!-- Author: Koji -->


<!-- Date: Sat Jun 16 16:26:31 2001 -->
<pre>Update: 
Looked at the data for several runs to find out when the above  
behavior started to occur. The result is as follows; 
 
Status Run    L1A    RUNTYPE  DATATYPE     DAY    ACTIVE  END 
--------------------------------------------------------------- 
  OK   117607 123467 Physics  DAQ Testing  06.13  08:44   09:12      
  --   117608 0      ==&gt; NO data 
  --   117609 40052   
  --   117610 49804   ==&gt; These runs didn't include CLC_00 crate      
  --   117611 226948 /   
  BAD  117612 18840  Physics  DAQ Testing  06.13  10:46   10:50 
--------------------------------------------------------------- 
 
It seems this behavior started at somewhere between 9 and 10am 
on 6/13.  
 
I got a call from control room around 9am on 6/13 about no  
updates on beam losses in ACNET. I found the HV PC was hanged up, 
so reset the PC and restarted the program at 9:30am. Then, I 
checked the signal for the BSC1-East counters using scope because 
the SciCo requested to do so. When I did this, I did most likely  
something bad. 
</pre>
<!-- Author: Koji -->


<!-- Date: Mon Jun 18 14:51:53 2001 -->
<pre>Replaced the transition board (type #1) with the spare.  
 
Looked at the pedestal distributions for the BSC ADMEMs. They 
look OK. Their RMS values are around 15-20 for the BSC-1, 20-30 
for the BSC-2, 30-35 for the BSC-3 and 40 for the BSC-4. 
 
The discriminator threshold on the transition board was set to 
15 mV (974 on the probe).</pre>
<!-- Author: Koji -->


<!-- Date: Mon Jun 18 15:29:13 2001 -->
<pre>I didn't make an entry when I changed the HV settings for the 
BSCs at 6:30pm on June 14. Here is the list of HV values for 
all the BSCs on June 18. 
 
Detector  HV(Volt) 
------------------ 
BSC1-W1   1650 
BSC1-W2   1300 
BSC1-W3   1550 
BSC1-W4   1350 
BSC1-E1   1500 
BSC1-E2   1450 
BSC1-E3   1600 
BSC1-E4   1300 
 
BSC2-W1   1400 
BSC2-W2   1400 
BSC2-E1   1620 
BSC2-E2   1470 
 
BSC3-W1   1300 
BSC3-W2   1620 
BSC3-E1   1480 
BSC3-E2   1430 
 
BSC4-W1   1520 
BSC4-W2   1400 
</pre>
<!-- Author: Koji -->


<!-- Date: Mon Jun 18 15:42:56 2001 -->
<pre>BSC-1 rate check without the beam: 
 
checked the rates for BSC-1 counters when there is no beam. 
The procedure is exactly same as what I did before (Fri Jun 15 
15:12:37). 
 
- after replacing the transition board 
- discreminator threshold = 15 mV 
- See the previous entry for HV settings 
 
counter     Loss (Hz)         Collision (Hz) 
---------------------------------------------------  
 W1         2.41 +/- 0.14     2.97 +/- 0.16        
 W2         1.40 +/- 0.11     2.06 +/- 0.13  
 W3         6.41 +/- 0.23     7.57 +/- 0.25  
 W4         1.36 +/- 0.11     1.92 +/- 0.13  
  
 E1         4.37 +/- 0.19     4.97 +/- 0.20 
 E2         0.47 +/- 0.06     0.60 +/- 0.07  
 E3         1.54 +/- 0.11     1.84 +/- 0.12  
 E4         2.48 +/- 0.14     2.98 +/- 0.16 
---------------------------------------------------       
 
</pre>
<!-- Author: Koji -->


<!-- Date: Sat Jun 23 11:51:40 2001 -->
<pre>Changed the HV settings for the BSC to study gain matching.  
 
The new values are as follows; 
 
Detector  HV(OLD)  HV(NEW)  +/- 
---------------------------------- 
BSC1-W1   1650     1700    +50   
BSC1-W2   1300     1350    +50 
BSC1-W3   1550     1600    +50 
BSC1-W4   1350     1400    +50 
BSC1-E1   1500     1550    +50 
BSC1-E2   1450     1500    +50 
BSC1-E3   1600     1650    +50 
BSC1-E4   1300     1350    +50 
 
BSC2-W1   1400     1500    +100 
BSC2-W2   1400     1500    +100 
BSC2-E1   1620     1620     0 
BSC2-E2   1470     1570    +100 
    
BSC3-W1   1300     1400    +100 
BSC3-W2   1620     1620     0 
BSC3-E1   1480     1580    +100 
BSC3-E2   1430     1530    +100 
 
BSC4-W1   1520     1620    +100 
BSC4-W2   1400     1500    +100 
---------------------------------- 
 
Many of HV values for BSC-2, 3 and 4 were lowered by about 200 V 
to avoid trips which could happen at the early stage of beam 
store. Since 6/16, we didn't see any trips so lowering -200 V 
from previous settings would be sufficient to avoid trips. But, 
the ADC count responses from ADMEM were also very low. 
 
Let's look at what happen with +100V higher voltages for these 
counters...</pre>
<!-- Author: Koji -->


<!-- Date: Tue Jun 26 09:56:46 2001 -->
<pre>Found some HV channels for the BSC were off in the morning on 
6/26. 
 
At 9:45am, the voltages for those channels were lowered by 100V 
and turned on. 
 
Ch  Detector  V0set  Vmon   Status ==&gt; changed to 
------------------------------------------------- 
 0  BSC1-W1   1700   991.0  Off        1600 
 6  BSC1-E3   1650   964.2  Off        1550 
 9  BSC2-W2   1500   920.6  Off        1400 
14  BSC3-E1   1580   948.6  Off        1480 
16  BSC4-W1   1620   947.8  Off        1520 
------------------------------------------------- 
  
 
</pre>
<!-- Author: Koji -->


<!-- Date: Fri Jun 29 09:23:53 2001 -->
<pre>BSC1- lowered HV earlier today (~12:30am)  
on BSC-1 4E and 4W: I lowered the HV by 100V.</pre>
<!-- Author: M.Gallinaro -->


<!-- Date: Tue Jul 3 10:39:20 2001 -->
<pre>During quiet time started 8:30am on 7/3, I changed the voltages 
for BSC-1. Now they are nominal values that we determined from 
plateau test. 
 
Ch  Detector  New   Old 
------------------------- 
00  BSC1-W1   1600  1600 
01  BSC1-W2   1250  1350 
02  BSC1-W3   1500  1600 
03  BSC1-W4   1300  1300 
04  BSC1-E1   1450  1550 
05  BSC1-E2   1400  1500 
06  BSC1-E3   1600  1550 
07  BSC1-E4   1250  1250 
 
</pre>
<!-- Author: Koji -->


<!-- Date: Mon Jul 9 14:44:10 2001 -->
<pre>Replaced the transition board (type #1) with the spare, by  
following the steps; 
 
1. turn off the HV (all BSC, RP, distributor) 
2. switch off the crate (CLC_00) 
3. unplug the cables to the TB 
4. replace the board with the spare 
5. connect the cables to the TB 
6. switch on the crate 
7. turn on the HV 
 
Checked the pedestals. They look OK (10-20 for BSC-1, 20-30 for  
BSC-2, 25-35 for BSC-3 and 40 for BSC-4). 
 
Discreminator level was 973 = 15 mV between the probes. It was 
not changed.</pre>
<!-- Author: Koji -->


<!-- Date: Tue Jul 24 16:51:34 2001 -->
<pre>Changed the HV settings for BSC-1 in the configuration file.  
 
File: D:HV_TEST (CLC_Forward_Crate.txt) 
 
HV Ch.  Counter   OLD    NEW  
--------------------------------  
  0     BSC1-W1   1600   1600  
  1     BSC1-W2   1250   1230  
  2     BSC1-W3   1500   1470  
  3     BSC1-W4   1300   1260  
  4     BSC1-E1   1450   1420  
  5     BSC1-E2   1400   1520  
  6     BSC1-E3   1600   1640  
  7     BSC1-E4   1250   1230  
--------------------------------  
</pre>
<!-- Author: Koji -->


<!-- Date: Sun Jul 29 21:34:57 2001 -->
<pre>One channel (Ch6) of BSC-1 was tripped. I turned on this channel. </pre>
<!-- Author: Konstantin -->


<!-- Date: Tue Aug 14 10:44:15 2001 -->
<pre>Changed HV settings for BSC in the configuration file.   
File: D:HV_TEST (CLC_Forward_Crate.txt)  
 
Below is a new set of values which we have from now. 
 
HV Ch.  Counter   OLD    NEW    Diff 
-------------------------------------- 
  0     BSC1-W1   1600   1600   0 
  1     BSC1-W2   1230   1210   -20  
  2     BSC1-W3   1470   1440   -30  
  3     BSC1-W4   1260   1260   0 
  4     BSC1-E1   1420   1420   0 
  5     BSC1-E2   1520   1520   0 
  6     BSC1-E3   1640   1640   0 
  7     BSC1-E4   1230   1230   0 
 
  8     BSC2-W1   1500   1550   +50 
  9     BSC2-W2   1400   1550   +150 
 10     BSC2-E1   1620   1570   -50 
 11     BSC2-E2   1570   1570   0 
 
 12     BSC3-W1   1400   1500   +100 
 13     BSC3-W2   1620   1570   -50 
 14     BSC3-E1   1480   1480   0  
 15     BSC3-E2   1530   1530   0 
 
 16     BSC4-W1   1520   1570   +50 
 17     BSC4-W2   1500   1550   +50 
-------------------------------------  </pre>
<!-- Author: Koji -->


<!-- Date: Thu Aug 16 16:57:42 2001 -->
<pre>Changed at 11:10am HV settings for BSC furthermore in the 
configuration file.    
File: D:HV_TEST (CLC_Forward_Crate.txt)   
 
Below is a new set of values which we have from now.  
 
HV Ch.  Counter   OLD    NEW    Diff  
--------------------------------------  
  0     BSC1-W1   1600   1580   -20  
  1     BSC1-W2   1210   1210   0   
  2     BSC1-W3   1440   1420   -20   
  3     BSC1-W4   1260   1260   0  
  4     BSC1-E1   1420   1420   0  
  5     BSC1-E2   1520   1520   0  
  6     BSC1-E3   1640   1610   -30  
  7     BSC1-E4   1230   1230   0  
 
  8     BSC2-W1   1550   1550   0  
  9     BSC2-W2   1550   1550   0  
 10     BSC2-E1   1570   1520   -50  
 11     BSC2-E2   1570   1570   0  
 
 12     BSC3-W1   1500   1530   +30  
 13     BSC3-W2   1570   1520   -50  
 14     BSC3-E1   1480   1480   0   
 15     BSC3-E2   1530   1550   +20  
 
 16     BSC4-W1   1570   1570   0  
 17     BSC4-W2   1550   1600   +50  
-------------------------------------  </pre>
<!-- Author: Koji -->


<!-- Date: Fri Aug 17 17:46:13 2001 -->
<pre>Changed at 5:35pm high voltages for  
some BSC channels for gain tuning. 
 
File: D:HV_TEST (CLC_Forward_Crate.txt)    
 
HV Ch.  Counter   OLD    NEW    Diff   
--------------------------------------   
  0     BSC1-W1   1580   1560   -20   
  1     BSC1-W2   1210   1230   +20    
  2     BSC1-W3   1420   1400   -20    
  3     BSC1-W4   1260   1280   +20   
  4     BSC1-E1   1420   1420   0   
  5     BSC1-E2   1520   1520   0   
  6     BSC1-E3   1610   1600   -10   
  7     BSC1-E4   1230   1230   0   
 
  8     BSC2-W1   1550   1550   0   
  9     BSC2-W2   1550   1550   0   
 10     BSC2-E1   1520   1470   -50   
 11     BSC2-E2   1570   1570   0   
 
 12     BSC3-W1   1530   1560   +30   
 13     BSC3-W2   1520   1490   -30   
 14     BSC3-E1   1480   1480   0    
 15     BSC3-E2   1550   1550   0   
 
 16     BSC4-W1   1570   1570   0   
 17     BSC4-W2   1600   1600   0   
-------------------------------------  </pre>
<!-- Author: Koji -->


<!-- Date: Mon Aug 20 12:02:01 2001 -->
<pre>Changed trigger threshold for the ADMEM (slot 16) in CLC_00 crate 
to check trigger output.  
Using cardEditor, the following parameters were changed. 
 
CLC_00:             OLD     NEW   
TRIGGERTHRESHOLD0   1000    2000 
TRIGGERTHRESHOLD1   1000    2000 
TRIGGERTHRESHOLD2   1000    2000 
TRIGGERTHRESHOLD3   1000    2000 
TRIGGERTHRESHOLD4   1000    2000 
TRIGGERTHRESHOLD5   1000    2000 
TRIGGERTHRESHOLD6   1000    2000</pre>
<!-- Author: Koji -->


<!-- Date: Mon Aug 27 11:09:10 2001 -->
<table><tr><td><a href=/cgi/elog/det-system-elog.pl?nb=beam_counters&action=view&page=-1&button=yes target='xxx' onclick='jswindow()'; align=top><img src=/cgi/elog/det-system-elog.pl?nb=beam_counters&action=view&page=-1  width='300' align='top'></td><td>Test...</a></td></tr></table>
<!-- Author: Koji -->


<!-- Date: Tue Aug 28 10:24:14 2001 -->
<pre>Late Entry: 
Updated some parameters in hardware database using cardEditor 
at 6:00pm on 8/21. 
 
Crate CLC_00: ADMEM_BSC_00 (slot 16) 
              ADMEM_BSC_01 (slot 17) 
  TRIGGERTHRESHOLD0   120 
  TRIGGERTHRESHOLD1   120 
  TRIGGERTHRESHOLD2   120 
       ..... 
  TRIGGERTHRESHOLD6   120 
 
Crate LEVEL1_GLOBAL_00: PREFRED_04 (slot 10) 
  B0OFFSET        15 
  FINEB0OFFSET     4 
  FREDCOARSEDELAY  2 
 
Parameters for PREFRED_04 will be modified several times later 
for timing study.</pre>
<!-- Author: Koji -->


<!-- Date: Tue Aug 28 10:28:48 2001 -->
<pre>Late Entry: 
Additional changes on HV for BSC. 
 
At 11:55am on 8/22, the following new voltages were set to the 
BSC. 
 
File: D:HV_TEST (CLC_Forward_Crate.txt)     
HV Ch.  Counter   OLD    NEW    Diff    
--------------------------------------    
  0     BSC1-W1   1560   1540   -20    
  1     BSC1-W2   1230   1250   +20     
  2     BSC1-W3   1400   1380   -20     
  3     BSC1-W4   1280   1300   +20    
  4     BSC1-E1   1420   1420   0    
  5     BSC1-E2   1520   1520   0    
  6     BSC1-E3   1600   1600   0    
  7     BSC1-E4   1230   1230   0    
 
  8     BSC2-W1   1550   1550   0    
  9     BSC2-W2   1550   1550   0    
 10     BSC2-E1   1470   1420   -50    
 11     BSC2-E2   1570   1570   0    
 
 12     BSC3-W1   1560   1560   0    
 13     BSC3-W2   1490   1390   -100    
 14     BSC3-E1   1480   1460   -20     
 15     BSC3-E2   1550   1550   0    
 
 16     BSC4-W1   1570   1570   0    
 17     BSC4-W2   1600   1600   0    
-------------------------------------  </pre>
<!-- Author: Koji -->