I
MSB
LS
B
7
FRONT
PANEL
DISPLAY
!zzzk
NC184218421
SIGNAL
BLOCK
NOT USED
I I
I
NOT USED
24
L
RFBRQ NOT USED
1
I
OPEN
(1)
cLosroloi
m
=
DEPRESSED
SWITCH
POSITION
I
A6
-
TO
FRONT
OF
PLUG-IN
98765432110
3
25
SCV TUNE
A6TP1
BRB~DUB~~U
IN A10J1-37
26 DLY COMP
I
FREQ
CAL
I
IN
I
A7P1-26
LSIRQ
LO FREQFM
Hexidecimal
0
I
2
3
4
5
6
7
8
9
A
b
C
d
E
F
OUT
IN
5
I
-1OV REF
I
OUT
I
A4P1-43 IJI
Binary
0000
000
1
0010
001
1
0100
0101
01
10
01
11
1000
1001
1010
101
1
1100
l
101
11
10
11
11
SCV TUNE
(A6TPl)
A3Pl-18
A5P1-2
Decimal
0
1
2
3
4
S
6
7
8
9
10
11
12
13
14
15
0
F
FSET*
(A6TP2)
E
I
BVTUNE
A6TP4
29
8
30
LEN
II)
LEN
1
LEN 2
23
44
Figure 8-49.
A6
YO
Driver, Component Locations
SCVTUNE
GND DIG
GNO DIG
Figure 8-51. A6Sl/S2 Switch Configuration
LSIRQ
A6TP1-3
OUT
37 GNDANLG
l5
1
PWON
I
IN
NOTES
A7P1-29
THE FOLLOWING KEY ENTRIES PROVIDE FRONT PANEL ACCESS FOR A DATA WRITE/READ
OPERATION TOIFROM THE ADDRESSED LOCATION:
D
L
L
LEN
0
I
I
I
1
I
I
LEN 1
I
I
I
I
I
I
I
I
FUNCTION KEY ENTRY
LRTS
A6TPI-1
"Hex Address Entry SHl FT 0
0
(enter hex address)
Hex Data WRITE M2 (enter data: two hex digits)
Hex Data
READ M3
Hex Data Rotation Write M4
Hex Addressed Fast Read M5
I
I
LEN 2
I
I
I
I
!
I
I
LEN
3
1
I
I
I
I
I
I
I
Figure 8-50. Sweep Control and Interrupt Logic Waveforms
*TO ADDRESS A DIFFERENT LOCATION, PRESS MI AND ENTER THE NEW ADDRESS, OR
USE
THE
INCREMENT
KEYS
4
s,
TO
STEPTO
THE
NEW
ADDRESS.
I
LEN
5
1
I
I
I
I
I
!
44 VTUNE
+
Set Press: CW SHIFT
=
2.4 GHz 52
TO PREVENT THE MICROPROCESSOR FROM SERVICING THE RETRACE
INTERRUPT, PRESS
8350A CW
.
LEN 6
I
I
I
*
Enter: SHIFT 54
*Waveform at TP2 will have slightly rounded edges due to larger feedback capacitor.
Figure 8-53. DAC Test
Figure 8-52.
A
6
Decoder Timing Diagrams
*
A12
YIG
OSC
YIG
TUNING
COIL
<'
I
1
<'
>
12
d
I
I
I
i
I_-I
*
8-54. A6 YO Driver Schematic Diagram
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