Skanti TRP 5000, Instruction Manual

Page: 31 / 112

3.12.6 Each of the four least significant digits of the synthesiser frequency
("100 kHz", "10 kHz", "l kHz", and "100 Hz") are encoded as follows:
Number Code
0
1
2
3
4
5
6
7
8
9 1001
1000
0111
0110
0101
0100
0011
0010
0001
0000
Table 3.12.5
3.12.7 The most significant digit of the synthesiser frequency ("l MHz")
is encoded as follows .
Number Code
3
4
5 10
01
00
Table 3.12.6
3.12.8 In order to store this information 3 PROM’s must be programmed at the
same input address. These 3 PROM’s are labelled A, B, and C. The total
amount of information should now be arranged as follows:
Input
Address
Control
bit
Band Mode Synthesiser frequency
1MHz 100KHz 10KHz 1KHz 100Hz
1 0
7
0
6
0
5
0
4
0
3
0
2
0
1
0
0
0
7
0
6
0
5
0
4
0
3
0
2
0
1
0
0
0
7
0
6
0
5
0
4
0
3
0
2
0
1
0
0
PROM-C PROM-B PROM-A
(0
0
to 0
7
indicates outputs to be programmed).
Table 3.12.7
3.12.9 NB. The code of the "Control bit- is always to be 1 for each Frequency
No. to be programmed.