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3.3.
3. 3.I.
3.3.2.
3. 3. 3.
3.3.4.
Instruction for Use of Pro
ramming
when used in E 5002
A minor disadvantage associated with the use of the PROu as the memo-
ry building block is that a few per cent of the PROMs cannot be pro-
gramed in one or more bit positions due to tolerance problems in
the qranufacturing process. In this case the sections 3.3.14 and 3.3.31
describe what to do.
As a PROM is not reprogranunble the greatest care should be taken
concert)ing the programing procedure.
5TR%in#:N:W3N¥:yifec::::1:::::a::n:e:::n;r::u:::ys=rj;aokh:
the hard way and the easy method.
If you do not have a Programing Slide-rule 342 244 31 at your dispo-
sal you must go the hard way described below.
Calculate the codes for the frequency information Co be scored in the
frequency memory PROMs according co the tables 3.3.1. and 3.3.2.
(see
paragraph
3.2.2.)
Desired frequency in rmz
Code for slider in
4±A
("io mz", "1 rmz")
Band
Mode
mlz
0
4rmz
RT
5
I
4rmz
RT
4
2
4rmz
RT
3
3
4rmz
RT
-
4
4rmz
VT
5
5
4rmz
WT
4
6
4rmz
WT
3
7
4mz
WT
-
8
6rmz
RT
5
9
6rmz
RT
4
10
8rmz
RT
5
11
8MHz
RT
4
12
8mz
RT
3
13
8mz
RT
-
14
8rmz
WT
5
15
8mz
rm
4
16
8rmz
WT
3
17
8rmz
ur
-
18
12m
RT
5
19
12 rmz
RT
4
20
16mz
RT
5
21
16mz
RT
4
22
16 rmz
RT
3
23
16mz
RT
-
24
16rm
ur
5
25
16mz
WT
4
26
16mz
rm
3
27
16 MHz
WT
-
28
22mz
RT
5
29
22RE
RT4
table 3.3.I. Calculaciag Codes for the tro m2
3-8
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