small focus
parameters at 60kV
If =
filament current
Ie = emission current
boost time = time to bring the temperature up to a higher
mA value
blank time = time to cool down to a lower mA value
The steps at
If are always the same within a kV table (33mA in this case), Ie
values and boost time values must rise, the blank time values must
fall with the increasing If
There must be
no identical values like in the boost time column (*). If such tables
appear use mA control firmware 4512 113 20212.
If
(mA)
|
Ie
(µA)
|
boost
time (ms)
|
blank
time (ms)
|
3113
|
100
|
0
|
688
|
3146
|
121
|
*
19
|
663
|
3179
|
143
|
*
19
|
644
|
3212
|
167
|
*
19
|
626
|
3245
|
193
|
*
19
|
608
|
3278
|
223
|
*
19
|
594
|
3311
|
258
|
*
20
|
577
|
3344
|
298
|
*
20
|
558
|
3377
|
345
|
*
20
|
543
|
3410
|
399
|
*
21
|
527
|
3443
|
461
|
*
21
|
513
|
3476
|
532
|
22
|
499
|
3509
|
613
|
39
|
486
|
3542
|
705
|
40
|
473
|
3575
|
809
|
42
|
459
|
3608
|
925
|
46
|
446
|
3641
|
1056
|
48
|
435
|
3674
|
1205
|
49
|
423
|
3707
|
1372
|
52
|
413
|
3740
|
1563
|
55
|
401
|
3773
|
1778
|
58
|
390
|
3806
|
2022
|
60
|
379
|
3839
|
2297
|
63
|
369
|
3872
|
2604
|
66
|
358
|
3905
|
2949
|
69
|
348
|
3938
|
3332
|
71
|
339
|
3971
|
3756
|
74
|
329
|
4004
|
4225
|
76
|
319
|
4037
|
4742
|
79
|
311
|
4070
|
5308
|
82
|
303
|
4103
|
5934
|
86
|
295
|
4136
|
6630
|
89
|
287
|
4169 |
7408 |
92 |
278 |
4202 |
8279 |
96 |
268 |
4235 |
9255 |
99 |
259 |
4268 |
10347 |
101 |
251 |
4301 |
11568 |
104 |
243 |
4334 |
12924 |
107 |
235 |
4367 |
14419 |
109 |
226 |
4400 |
16053 |
113 |
219 |
4433 |
17827 |
115 |
212 |
4466 |
19740 |
118 |
203 |
4499 |
21795 |
121 |
198 |
4532 |
23991 |
123 |
190 |
4565 |
26333 |
126 |
185 |
4598 |
28843 |
128 |
178 |
4631 |
31551 |
131 |
172 |
4664 |
34485 |
134 |
167 |
4697 |
37675 |
137 |
161 |
4730 |
41150 |
139 |
154 |
4763 |
44938 |
142 |
149 |
4796 |
49062 |
145 |
142 |
4829 |
53523 |
148 |
138 |
4862 |
58314 |
150 |
130 |
4895 |
63429 |
154 |
127 |
4928 |
68862 |
157 |
121 |
4961 |
74608 |
159 |
116 |
4994 |
80661 |
163 |
111 |
5027 |
87032 |
166 |
105 |
5060 |
93756 |
169 |
101 |
5093 |
100866 |
171 |
94 |
5126 |
108397 |
175 |
91 |
5159 |
116381 |
178 |
87 |
5192 |
124853 |
180 |
82 |
5225 |
133829 |
184 |
77 |
5258 |
143288 |
187 |
72 |
5291 |
153205 |
190 |
68 |
5324 |
163556 |
193 |
64 |
5357 |
174315 |
197 |
60 |
5390 |
185457 |
200 |
56 |
5423 |
196935 |
203 |
52 |
5456 |
208669 |
207 |
47 |
5489 |
220576 |
211 |
42 |
5522 |
232573 |
214 |
40 |
5555 |
244579 |
217 |
36 |
5588 |
256517 |
221 |
32 |
5621 |
268349 |
226 |
28 |
5654 |
280055 |
229 |
25 |
5687 |
291614 |
233 |
22 |
5720 |
303002 |
236 |
18 |
5753 |
314194 |
242 |
14 |
5786 |
325087 |
247 |
11 |
5819 |
335534 |
252 |
6 |
5852 |
345385 |
257 |
3 |
5885 |
354490 |
259 |
0 |
|