HP 8924E, Assembly

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591
Chapter 14, Diagnostics Descriptions
Description of RF Diagnostics (RFDIAGS3)
N:\mkt\MANUALS\HP8924C\ALR\diagnos.fb
Figure 71 Input Tests: Ant, O/P Filter & Atten, Autorange Atten, Counter, Temp Sensor
A5 INPUT
DUP
LE
X O
U
T
(F
P)
R
eversep
o
w
er
DU
PLE
X_
DE
T
S
ta
nda
rd
-4
dB
AN
T I
N
Sw
itch
a
▼
Sw
itch
Au
to
R
ang
e
Atte
nu
ator
0
V
olt
age
MU
X
15
0 MH
z
150 MH
z
386
MHz
35
0
T
O
6
5
0
MH
z
65
0
T
O
1
00
0
MH
z
Vo
ltag
e
MU
X
C
ont
rol
HIG
H P
O
W
E
R
ATT
EN
UA
TOR
A4
-6
-6
-6
-6
-6
a
1
b
Presc
aler an
d
Di
vid
er
4
EC
L
÷
256
a
b
TTL ÷ 1
6
3
or
20
0 or 20
5
a
In
pu
t Fi
lter
s
b
b
6
c
c
a
d
d
0
to
12
dB
▼
DA
C
DA
C
DA
C
FIL
TE
R_O
U
T
_D
E
T
Se
rial
I/
O
C
ont
rol
D
ata
Bu
s
D
ata
Bu
s
Fil
ter
Fil
ter
Fil
ter
Fil
ter
+5
V
+3
0
V
-9
V
+9
V
7
b
a
a
b
Con
tro
l
AN
TE
NN
A_D
ET
T
emp
Se
ns
e
D
U
P
L
EX_
D
E
T
DE
T
_
HI
RF
De
te
ct
or
AG
C L
o
op
Ou
tp
ut
Ov
erp
o
w
er
Pr
ote
ct
Pro
tect
All P
aths
2
St
ep A
tte
nua
tor
(5 dB Ste
ps)
▼
0 t
o
12
5 d
B
RF
IN
/OU
T
(F
P
)
b
NC
(FP
)
No
d
e 4
NC
N
ode 8
Mo
dule
C
ont
rol
N
ode 5
F
ilt
er
O
ut
put
De
te
ct
o
r
RF
Fro
m
A2
6
Out
put
CO
UN
TER
INP
UT
To
37
Me
as
u
re
m
e
n
t
RF
INP
UT
To A19
Re
cei
ver
Mi
xe
r
Pa
th
4
Va
ria
ble
A
tte
nu
a
tor
N
ode 6
N
ode 7
Pa
th
4
Pa
th
4
Pa
th
3