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Service
Model 11869A
Table 8-1.
11869A Mnemonics (1 of 2)
DESCRIPTION
—
11869A
TO
RF PLUG-IN
AM INPUT
Amplitude Modulation Input
P2-A4
J2-A4
Pl-5
BAND 1
Band
1 Turn-On
-
Pl-26
BAND 2
Band
2 Turn-On
-
_
Pl-25
BAND 3
Band
3 Turn-On
-
_
P1— 2 8
BAND 4
Band
4 Turn-On
—
Pl-27
L BPRQ
LOW = Blanking Pulse Request
P3-55
J2-55
—
CW & MAN
CW Filter Turn-On
-
—
Pl-2
GATE
FM INPUT
Frequency Modulation Input
P2-A3
J3-A3
FM INPUT
GND FREQ
Frequency Reference Ground
_
—
Pl-10
REF
HC GND
High Current Ground
—
_
Pl-32
Ij I AO
LOW = Instrument Address Line
0
(LSB)
P3-38
J2-38
L
IA1
LOW = Instrument Address Line
1
P3-7
J2-7
_
L IA2
LOW = Instrument Address Line
2
P3-39
J2-39
_
L IA3
LOW = Instrument Address Line
3
P3-8
J2-8
L IA4
LOW = Instrument Address Line
4
P3-40
J2-40
—
L IA5
LOW = Instrument Address Line
5
P3-41
J 2-41
L IA6
LOW = Instrument Address Line
6
P3-10
J2-10
_
IDO
Instrument Data Line
0
(LSB)
P3-33
J2-33
—
ID1
Instrument Data Line
1
P3-2
J2-2
ID2
Instrument Data Line
2
P3-34
J2-34
ID3
Instrument Data Line
3
P3-3
J2-3
_
ID4
Instrument Data Line
4
P3-35
J2-35
_
IDS
Instrument Data Line
5
P3-4
J2-4
ID6
Instrument Data Line
6
P3-36
J2-36
—
ID7
Instrument Data Line 7
(MSB)
P3-5
J2-5
—
I/OE2
HIGH = I/O Enable
for RF Plug-In
P3-47
J2-47
_
L
I/OSTB
LOW = Input/Output Strobe
P3-17
J2-17
—
L IRD
LOW = Instrument Bus Read
(High = Write)
P3-15
J2-15
-
LC GND
Low Current Ground
_
_
Pl-35
L RFB
LOW = RF Blank
P3-56
J2-56
Pl-3
L RFBRQ
LOW = RF Blank Request
P3-54
J2-54
I. RFM
LOW = RF Marker
(Amplitude)
P3-24
J2-24
Pl-36
L RTS
LOW = Retrace Strobe
P3-57
32-51
Pl-24
SEQ SYNC
Blanking During Band Change
-
-
Pl-18
SQ MOD
Squarewave Modulation
(1 kHz or
27.8 kHz)
P3-26
J 2-26
Pl-6
L SSRQ
LOW = Stop Sweep Request
P3-32
J2-32
Pl-8
VTUNE
Tuning Volage
P2-A1
J3-A1
Pl-1
.01-0.IS
Fast Sweep Correction Turn-On
-
-
Pl-4
RANGE
+ 5VB
+5VB Supply
P3-18,
50 , 51
J2-18,
50,
51
Pl-33
+5VB REF
+5VB Ground Reference
P3-21
J2-21
—
GND
-10V REG
-10V Regulated Supply
P2-13
J3-13
Pl-31
-10V REF
(through
R6)
-10V Reference
to Sweep Speed
Adjust Circuit
Pl-7
8-6
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