HP 8340B Manual page 127

Table
B-l.
M
and
N
Divide Numbers and Voltage Levels^
M
Divide
Number
08
09
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
1 A 0
entry corresponds to
< 0.5V.
A 1
entry corresponds to
>
3.0V.
Ml
M2 M3 M4 M5
00010
10010
01010
11010
00110
10110
01110
11110
00001
10001
01001
11001
00101
10101
01101
11101
00011
10011
01011
11011
N Divide
Number
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
N1 N2 N3 N4 N5 N6
101100
011100
111100
00001
0
100010
010010
110010
001010
101010
011010
111010
000110
100110
010110
110110
001110
101110
011110
111110
000001
100001
010001
110001
001001
NOTE:
To
accurately measure the frequency at A31TP1 and A31TP2
in
steps
14
and
17,
the
mea¬
surement should be made with
a spectrum analyzer and an active probe.
14. Install
the A31 assembly on the extender board and press [CW] [4] [5] [3] [0] [MHz].
Connect
Channel
1
of
an oscilloscope to
A31TP1 and set
the scope as
follows: 100
ns/div,
200
mV/div, and
DC coupled. The
waveform displayed on the scope should be similar to the one shown in Figure
B-13.
The frequency
at the test point should be 3.333333 MHz.
If the signal at A31TP1
is
incorrect,
replace A31.
HP 8340B/41B
M/N
Loop Assembly-Level
Troubleshooting
B-25/B-26