DSI R-110 User manual

March 5 , 1990
PROTOTYPE
TECHNICAL MANUAL
FOR
R110 RECEIVER
THIS MANUAL IS INTENDED FOR USE WITH
THE FOLLOWING SERIAL NUMBERS :
thru
DYNAMIC SCIENCES , INC
9655 Irondale Ave.
Chatsworth , CA 91311
THIS DRAWING , PRINT OR DOCUMENT AND
SUBJECT MATTER DISCLCSED HEREIN ARE
PROPRIETARY ITEMS TO WHICH DYNAWCASCIENCES INC .
TION , REPRODUCTION , MANUFACTURE AND
SALE . THIS DRAWING , PRINT OR DOCUMENT IS
SUBMITTED IN CONFIDENCE FOR CONSIDERA
TION BY THE RECIPIENT ALONE UNLESS PERMIS
SION FOR PURTHER DISCLOSURE IS EXPRESSLY
GRANTED IN WRITING .

Table of Contents
2
2
2
2
3
8
8
9
9
......
1 .
GENERAL INFORMATION
1.1 Description and Purpose
1.2
Equipment Description
1.3
Physical Characteristics
1.4
Specifications
1.5 Equipment Supplied
1.6 Equipment Required But Not Supplied
2 . INSTALLATION
2.1
Introduction
2.2
Installation Planning
2.3
Logistics
2.3.1
Receiving Data
2.3.2
Cable Requirements
2.4
Installation Procedures
2.4.1
Unpacking
2.5 Mounting
2.6
Equipment Connection
2.6.1
Power Settings and Connections
2.7
External Interface
2.7.1
Discrete Status/ Control Interface
2.7.2
Ground Stud
2.8
Preparation for Reshipment
3 . OPERATION
3.1
Introduction
3.2
Identification of Controls
3.3
Modes of Operation
3.4
Default Settings
3.5
Condensed Operation Instructions
3.6 Detailed Operation Discussions
3.6.1
RF Input Controls , Indicators , and Connectors
3.6.2
Input Attenuation Control and Display
3.6.3
Gain Control and Display
3.6.4
Bandwidth Controls and Display
3.6.5
BFO Controls and Indicator
3.6.6
Video Output , Control , and Indicator
3.6.7
Z Axis Controls and Indicators
3.6.8
X Axis Output
3.6.9
Audio Output
3.6.9.1
Audio Warning
3.6.10
Status Indicators
3.7
Keypad and Tuning Control Operations
3.7.1
Operating Modes
3.7.1.1
Tune Mode
3.7.1.1.1
Entering Frequencies Via the Keypad
3.7.1.2
Delta - Gain Mode
3.7.1.3
Alternate - Gain Mode
3.7.1.4
Alternative Bandwidth Set
3.7.1.5
Store Settings
9
9
10
10
10
11
11
13
14
17
18
18
19
19
19
22
24
:
:
:
24
27
28
28
29
29
30
30
30
31
31
31
31
32
32
33
33
34
34
34
35
iii

Table of Contents ( cont . )
35
36
36
36
37
37
37
39
39
39
40
40
40
40
4.3
:
:
:
:
3.7.1.6
Recall Settings
3.7.1.7
Scan Operations
3.7.1.7.1
Start Mode
3.7.1.7.2
Stop Mode
3.7.1.7.3
Step Mode
3.7.1.7.4
Rate Mode
3.7.1.7.5 Scan Mode
3.7.1.8
AGC On / Off Toggle
3.7.1.9
IEEE - 488 Address Display / Selection
3.7.1.10
Display Brightness Selection
3.7.1.11
Audio Output Beep Level Adjustment
3.7.1.12
Reset the Receiver
3.7.1.13 Test Mode
3.7.2
AM Slideback Controls and Indicators ( optional )
3.7.3
Pulse Stretch Controls and Indicator ( optional )
4. TEST AND INSPECTION
4.1
Introduction
4.2
Test Equipment
Data Sheet
4.4
Performance Test
5 . PRINCIPLES OF OPERATION
5.1
Introduction
5.2.1
RF Front - End
5.2.2
Band 1 and 2 Processing
5.2.3
Band 3 Processing
5.3
IF Section
5.3.1
AGC Control Circuit
5.4
DC IF Section
5.5
Video Section
5.5.1
Detector Circuit
5.5.2
Video Amplifier and Noise Filters
5.5.3
Z - Axis Circuit
5.5.4
BFO Detector Circuit
5.5.5
Optional Pulse Stretch and Slideback
5.6 Synthesizer Section
5.6.1
Local Oscillator Usage
5.6.2
Reference Clock .
5.6.3
Direct - Digital - Synthesizer
5.6.4
Microwave Multiplier
5.6.5
Bands 1 - 2 Synthesizer / Mixer
5.6.6
2 GHz Multiplier
5.6.7
3 MHz Multiplier
5.6.8
21.4 MHz DC -IF Clock
5.6.9
523-533 Mixer
5.7
Control Section
5.7.1
IEEE - 488 Interface
5.7.2
Front Panel Board
5.7.3
Front Panel I / O Board
5.7.4
Processor Board
5.7.5
Processor Firmware
41
42
42
42
42
42
46
46
48
48
50
52
54
55
58
60
60
61
61
61
63
63
64
64
64
64
65
65
65
66
68
68
70
71
71
73

Table of Contents ( cont .)
5.8
5.8.1
5.8.2
5.8.3
6 .
6.1
6.2
6.3
6.3.1
7 .
8 .
Power Supply Section
Unregulated Supply
Regulated Supply
Power Supply Monitoring
MAINTENANCE
Maintenance Procedures
Preventative Maintenance
Periodic Maintenance
Fault Isolation
SCHEMATICS
PARTS LISTS
74
74
76
76
78
78
78
78
80
92
94
List of Tables
Table 1-1 Physical Characteristics
Table 1-2 Specifications
Table 1-3 Equipment Supplied
Table 1-4 Equipment Required But Not Supplied
Table 2-1 Receiving Data
Table 2-2 Cables
Table 2-3 Connector Identification
Table 2-4 Fuse Selection
Table 2-5 Line Voltage Range Selection
Table 2-6 IEEE - 488 Bus
Table 2-7 RS - 232 Interface ( Internal Connector )
Table 2-8 Dipswitch Settings for IEEE - 488 Bus Address
Table 2-9 Dipswitch Settings for RS -232 Baud Rate
Table 2-10 Discrete Status / Control Interface
Table 3-1 Front Panel Nomenclature
Table 3-2 Rear Panel Nomenclature
Table 3-3 Default Settings
Table 4-1 Test Equipment
Table 5-1 Receiver Frequency Bands
Table 5-2 21.4 MHz IF Noise Filter Selection
Table 5-3 Video Filter Selection
Table 6-1 Preventative Maintenance
Table 6-3 Malfunction Location
Table 6-4 Maintenance Selection
Table 6-5 Test Sequence
Table 6-6 Fault Isolation , General
Table 6-7 Fault Isolation , RF Section
Table 6-8 Fault Isolation , IF Section
Table 6-9 Fault Isolation , DC IF Section
Table 6-10 Fault Isolation , Video Section
Table 6-11 Fault Isolation , Synthesizer Section
2
3
8
8
9
10
11
13
13
15
15
16
17
17
19
22
24
43
48
54
60
80
81
82
83
84
85
86
87
88
89
V

List of Tables ( cont . )
Table 6-12 Fault Isolation , Control Section
Table 6-13 Fault Isolation , Power Supply
Table 7-1 List of Schematics
Table 7-2 Definition of Designations
Table 8-1 List of Parts Lists
90
91
92
93
94
List of Figures
Frontispiece
Figure 2-1 Equipment Packaging
Figure 3-1 Front Panel
Figure 3-2 Rear Panel
Figure 4-1 Test Data Sheet ( Sample )
Figure 4-2 Test Equipment Connection
Figure 5-1 R- 110 Receiver Block Diagram
Figure 5-2 Low Frequency Module Block Diagram
Figure 5-3 MW Module Block Diagram
Figure 5-4 IF Section Block Diagram
Figure 5-5 DC IF Block Diagram
Figure 5-6 Video Section Block Diagram
Figure 5-7 Synthesizer Block Diagram
Figure 5-8 Front Panel Board Block Diagram
Figure 5-9 Processor Board Block Diagram
Figure 5-10 Power Supply Block Diagram
Figure 6-1 Test Point Location
vii
12
21
23
44
45
47
49
51
53
56
59
67
69
72
75
79
vi

1 .
GENERAL INFORMATION
1.1
Description and Purpose
The R - 110 receiver , shown in the frontispiece , is a solid - state multiple - conversion receiver that
provides a means of detecting and measuring signals associated with electromagnetic analysis ,
TEMPEST , spectrum analysis , and frequency surveillance , in the range of 1 Khz to 1 Ghz . Three
basic modes of operation are incorporated into the instrument : manual operation , automated sweeping ,
and remote operation controlled by a host computer . The receiver will also work with various
accessories such as the R- 1180 Microwave Downconverter , which extends the frequency range to 18
GHz .
1.2
Equipment Description
The R - 110 receiver consists of modularly - constructed electronic circuits integrated with a front panel
assembly containing operator controls and indicators . RF , video , and analog signals are interconnected
by dedicated connectors located on the front and back panels of the instrument . Function control
signals and interface data used by separately mounted equipment are provided through multi -contact
connectors that use distinctive configurations to prevent improper positioning when mated .
1.3
Physical Characteristics
The characteristics of the R - 110 are shown in Table 1-1 .
Table 1-1 Physical Characteristics
115/230 vac + 10 %
100 watts
Input Power
Power Dissipation
Mechanical Dimensions
Standard Height
Standard Width
Standard Depth
Rack Mount Height
Rack Mount Width
Rack Mount Depth
Weight
Volume
Cooling
Temperature Range
Operating
Storage
Relative Humidity
Operating
Storage
5.22 in ( 133 mm )
17.00 in (432 mm )
18.00 in ( 457 mm )
5.22 in ( 133 mm )
19.00 in ( 483 mm )
18.00 in (457 mm )
39.0 lbs ( 18 kg )
0.6 cu.ft.
Free and forced convection ( internal fans )
40 to 105 F ( 5 to 40 C )
-40 to 167 F (-40 to 75 C )
0 - 90 % non condensing
0 - 95 % non condensing
2

1.4
Specifications
The detailed electrical and performance specifications of the R - 110 receiver are shown in Table 1-2 .
Each entry is prefaced with the applicable paragraph number from Section 4.3.3 of the SOW or a
" DSI " , indicating that the item is in addition to the specified requirements . An " * " indicates that the
specification paragraph has been revised . The " As Designed " entries show the anticipated
operation / performance of the prototype and production receivers ; a " Same " means " same as specified
requirement " . The " Specification " entries are from the SOW and approved revisions .
Table 1-2 Specifications
SOW PARA .
AS DESIGNED
SPECIFICATION
( 4.3.3.1 ) Modes of Operation
Same plus Scan and
Downconverter Modes
Manual ( standard ) and
Remote ( optional )
( 4.3.3.3 )* RF Inputs
Same
Two inputs , remote or local
ly selectable , break - before
make switching
( 4.3.3.4 ) Frequency Range :
Same
Both inputs tunable over
range of 1 KHz to 1 GHz
( 4.3.3.5 ) Noise Figure :
10 dB
Less than 15 dB
( 4.3.3.5 ) Spurious - free Dynamic Range :
70 dB
Not less than 60 dB between
RF input and AM video
output , and between RF in
put and IF output
( 4.3.3.3 ) Input VSWR :
Same
Less than 2 : 1 over full freq .
range
( 4.3.3.3 ) Input Impedance :
Same
50 ohms nominal
( 4.3.3.3 )* Maximum Tolerated RF Input :
1 watt average CW
( 4.3.3.3 ) Isolation between inputs :
80 dB
At least 60 dB
( 4.3.3.8 ) LO Leakage at Input Connector :
Same
Less than -90 dBm
( 4.3.3.8 ) Residual Spurious Responses :
< -120 dBm
Less than -107 dBm
( 4.3.3.6 ) IF Rejection :
Same
At least 80 dB
( 4.3.3.6 ) Image Rejection :
Same
At least 80 dB
3

SOW PARA .
AS DESIGNED
SPECIFICATION
( DSI )
Input Attenuator :
Range :
Operation :
Switching Time :
0-70 dB in 10 dB steps
Manual and auto.selection
Less than 30 ms
( 4.3.3.5,6 ) * Gain :
Quasi - continuous , 50 dB
range . RF , IF , pre
detection gains optimally
adjusted
( DSI )
Bands :
Three bands cover the
frequency range ; the
bands are automatically
selected as a function
of input frequency
( DSI )
Band Switching / Settling Time :
30 msec typical
( DSI )
Band Frequency Ranges :
( hysteresis provided across
band breaks )
Band 1 : 1 KHz to 249.99..KHz
Band 2 : 250 KHz to 14.99..MHz
Band 3 : 15 MHz to 999.99..MHz
( 4.3.3.4 )* Tuning :
Single knob tuning with
selectable tuning rate ;
dual switches for pushbutton
tuning ; switches for
automatic scan
( 4.3.3.4 )* Tuning Resolution :
0.1 Hz below 250 KHz
1.0 Hz from 250 KHz to 15 MHz
100 Hz above 15 MHz
( 4.3.3.3 ) Tuning interference :
Same
No detectable tuning inter
ference in video and audio
outputs
( DSI )
Reference Oscillator Type :
100 MHz oven - controlled ,
Quartz oscillator ( TCXO ) ;
adjustable frequency
( DSI )
Ref . Oscillator Aging :
1 PPM per year
( DSI )
Ref . Oscillator Temperature
Stability :
0.05 PPM , 0 to 60 C
( 4.3.2.2 ) Reference Oscillator Output :
> 0 dBm
Level not defined

SOW PARA .
NOMINAL
SPECIFICATION
( 4.3.3.4 ) Receiver Frequency Stability :
1 PPM after 30 minutes
Same as Ref.Osc .
after 30 min .
( 4.3.3.4 ) Receiver Frequency Accuracy
:
Same as Ref.Osc .
after 30 min .
1 PPM after 30 minutes
warm - up
( DSI )
Frequency Display :
12 digit alphanumeric
character , LED ,
adjustable intensity
( 4.3.3.4 ) Frequency Display Readability :
Same
Readable with / without
backlighting
( DSI )
Wide - BW IF Output Frequency :
1450 MHz nominal
( DSI )
Wide - BW IF Output Level :
At least -30 dBm into
50 Ohms
( 4.3.3.7 ) Signal Monitor Center Frequency : Same
21.4 MHz
( 4.3.3.7 ) Signal Monitor Output Bandwidth : Same
4 MHz minimum
( 4.3.3.7 ) Signal Monitor Output Level :
at least 100 uy
At least 10 uV peak into 50
Ohms with RF input of -107
dBm and full RF gain
( 4.3.3.7 ) IF Center Frequency :
Same
21.4 MHz
( 4.3.3.6 ) * IF Bandwidths ( default set )
:
500 Hz to 100 KHz
( in 1-2-5 sequence ) ,
300 KHz , 1 MHz , 4 MHz ,
15 MHz
( DSI )
IF Bandwidths ( alternate set ) :
50 Hz to 100 KHz ( in
1.0-1.25-1.6-2.0-2.5-3.2
4.0-5.0-6.4-8.0 sequence ) ,
300 KHz , 1 MHz , 4 MHz ,
15 MHz
( 4.3.3.6 ) IF Bandwidth Impulse Response :
Less than 5 %
Overshoot less than 8 % for
BW < 150 KHz , 12 % for BW
> 150 KHz
( 4.3.3.6 ) IF Selectivity : 4 : 1 typical
Shape Factor better than
10 : 1 ( 60 to 6 dB )
( 4.3.3.7 ) IF Output Level :
At least 10 dBm
At least 0 dbm into 50 Ohms
5

SOW PARA .
AS DESIGNED
SPECIFICATION
( DSI )
AGC :
Selectable with keyboard
( 4.3.3.2 ) Detection Modes :
Same
AM , CW
( DSI )
Detection Type :
AM peak
( 4.3.3.7 ) Video Output Modes :
Same
AM ( Linear ) , Log , Z -axis
( DSI )
Optional AM Video Functions :
Slideback , pulse stretch
( 4.3.3.7 ) * Video Bandwidths
:
Not less than 1/2
selected IF bandwidth
( 4.3.3.7 ) AM Video Dynamic Range
:
At least 35 dB
At least 30 dB
( 4.3.3.7 ) Log Dynamic Range :
At least 70 dB
At least 60 dB
( 4.3.3.7 ) AM , Log and Z - Axis Impedances : Same
50 Ohms nominal
( 4.3.3.7 ) AM , Log Output Levels :
At least 3 volts
At least 2 Volts ( into 50
Ohms )
( 4.3.3.7 ) Z - axis Operation :
Same with 3 volts
Output adjustable to 2 Vrms
and reversible
( 4.3.3.7 ) Audio 3 dB Freq . Response :
20 Hz to 20 KHz
30 Hz to 12 KHz
( 4.3.3.7 ) Audio Output Level :
At least 8 V rms
At least 1 Vrms into 8 Ohms
( 4.3.3.6 ) BFO Tuning Range :
Same
At least 4 KHz
( 4.3.3.6 ) BFO Tuning Resolution :
Continuous
At least 10 Hz steps
( 4.3.3.8 ) IEEE - 488 Codes :
Same
SH1 , AH1 , T6 , L4 , SR1 ,
RLI , PPO , DC1 , DTI , CO
( DSI )
Remotely Controllable Functions : Frequency , Input attenuation ,
IF bandwidth , detection mode /gain ,
RF gain , AGC mode , RF input select ,
Step Size , Step Up , Step Down , plus
Calibration and Service functions
( 4.3.3.8 ) Power cord :
Same
Shielded cord
( 4.3.3.8 ) Protection from power damage :
Same
No damage when improperly
powered
( 4.3.3.8 ) Line voltage select : Rotary switch
Slide switch
6

2.6.1
Power Settings and Connections
The instrument is shipped from the factory preset to operate from a power source of 115 volts , 50/60
Hz , single phase . For operation using a different voltage range , select the proper fuse rating from
Table 2-4 , and proceed as follows :
1 .
Place the line voltage select switch located on the rear panel of the instrument in the proper
position .
2 .
Select and install the proper line fuses for the input voltage to be used .
3 .
Set the line voltage range switch to the required position as shown in Table 2-5 . When both the
PWRHI and PWRLO LED lightbars on the front panel are unlit , the range selected is acceptable .
Table 2-4
Fuse Selection
VOLTAGE
FUSE RATING
115 V Range
2 Amp , 2ASB slo -blo , Little
-Fuse 213002
230 V Range
2 Amp , 1ASB slo - blo , Little
-Fuse 213001
Table 2-5 Line Voltage Range Selection
SELECT SWITCH
RANGE SWITCH
INPUT
VOLTAGE RANGE
115 V
Low
95 - 105 VAC
Norm
105
115 VAC
High
115 - 126 VAC
230 VLow
190 - 210 VAC
Norm
210 - 231 VAC
High
231 - 253 VAC
13

The instrument has a 3 conductor power cord which , when connected to an appropriate receptacle ,
grounds the instrument chassis for safety .
WARNING
The AC power cord should only be connected
to receptacles that have active protected
earth ground contacts . Bypassing or defeating
the earth ground protection can result in injury
to operating personnel .
2.7
External Interfaces
Pin numbers and signal identification for the IEEE - 488 bus interface connector are listed in Table
2-6 .
The signal identification for the internally mounted RS - 232 service connection is listed in Table 2-7 .
The R - 110 comes factory - set to IEEE - 488 bus address 12 , and with the RS - 232 interface to a baud
rate of 4800. To change either of them , perform the following steps .
1)
Unplug the receiver . Remove the front panel assembly .
2 )
Open the front panel assembly to gain access to the Processor board .
3 )
There is one dip - switch visible on the bottom edge of this board . Switches 1 - 5 determine
the bus address . The desired address must be set in binary , with switch 5 considered to be
the MSB . " On " generates a zero , " Off " a one . Table 2-7 lists the setting for each available
address . Switches 6 - 8 determine the baud rate for the RS - 232 interface . Table 2-8 lists
the setting for each available baud rate .
4 )
When the dipswitch is set to the desired value , replace the cover and reassemble the
receiver . The new setting will be read on power - up .
14

Table 2-6 IEEE - 488 Bus
Pin No. Signal
Pin No. Signal
-
2
3
4
5
6
7
8
9
10
11
12
DIOI 13
DIO2 14
DIO3 15
DIO4 16
EOI 17
DAV 18
NRFD 19
NDAC 20
IFC 21
SRO 22
ATN 23
SHIELD 24
DIO5
DIO6
DIO7
DIO8
REN
GND (6)
GND ( 7 )
GND ( 8
GND ( 9 )
GND (10 )
GND (11 )
GND , LOGIC
Note :
Numbers in parenthesis identify the signal line associated with the indicated ground .
Table 2-7 RS - 232 Interface ( Internal Connector )
Pin No.
Signal
Pin No. Signal
2
3
4
5
6
7
8
9
10
11
12
13
GND ( Shield ) 14
RXD
15
TXD
16
RTS 17
CTS
18
DSR
19
GND ( Signal ) 20
( spare) 21
( spare ) 22
( spare) 23
( spare ) 24
( spare) 25
( spare )
( spare )
( spare )
( spare )
( spare )
( spare )
( spare )
DTR
( spare )
( spare )
( spare )
( spare )
( spare )
15

Table 2-8 Dipswitch Settings for IEEE - 488 Bus Address
Switch Position
Address 5
3
2
1
0
on
off on
2
3
4
5
6
7
8
9
10
off on
on on on on
on
off on
on on on
on
off on on
off off on
on on
on on
off on
on
off on
on
on
off off on on
off off off on on
on on on off
on
on
off on
on
off on off on
off off on off on
on on
off off on
off on
off off on
on off off off on
off off off off on
on onon
on off
off
on on on off
on
off onon off
off off on on
on on off
on off
off on off on
off
on off off on
off off off on
off
on on on off off
off on
on off off
on
off on
off off
off off on off off
on on off off off
off on
off off off
on
off off off off
off off off off off
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
off
off
16

Table 2-9 Dipswitch Settings for RS - 232 Baud Rate
Baud Rate
Switch
6
7 8
110
150
300
600
1200
2400
4800
9600
on on on
off on
on
on
off on
off off on
on on off
off
on off
on off off
off off off
2.7.1
Discrete Status / Control Interface
In addition to the IEEE - 488 interface , there is also a connector on the rear panel of the receiver
which contains discrete , dedicated status and control lines intended for interfacing to various
associated hardware . The signals on the various connector pins are listed in Table 2-10 .
Table 2-10 Discrete Status / Control Interface
Pin Signal
Used With
All
Pin Signal Used With
TO BE REVISED :
DETOL System Interface
2 RFOL System Interface
3 LSTAT System Interface
4 PRE01 Preselector
5 PRE02 Preselector
6 PRE03 Preselector
7 PRE04 Preselector
8 IFOL System Interface
9 CSA Audio Processor
10 ( Spare )
11 ( Spare )
12 ( Spare )
13 ( Spare )
14 GND
15 ( Spare )
16 ( Spare )
17 ( Spare )
18 ( Spare )
19 ( Spare )
20 ( Spare )
21 ( Spare )
22 ( Spare )
23 (Spare )
24 ( Spare )
25 ( Spare )
17

3 .
OPERATION
3.1
Introduction
This section provides instructions for the operation of the receiver
.
The section begins with
identification of the various controls , displays and connectors . The modes of operation and the default
settings are then presented , along with a list of condensed operating instructions . More detailed
discussions follow , providing an in - depth understanding of the receiver's operational features .
3.2
Identification of Controls , Displays , and Connectors
Figure 3-1 is a front view of the receiver with numerical designators that are referenced to the
identification list of Table 3-1 . Figure 3-2 provides a back view of the instrument and is referenced
to the nomenclature listed in Table 3-2 . The tables provides a short explanation of function and pur
pose for each designated item ; more detailed explanations are given later .
Table 3-1
Front Panel Nomenclature
CONNECTORS :
1. RF Input # 1
2. RF Input #2
3. X - Axis
4. Video
5. Audio Jack
Female BNC connector for input of RF signals .
Female BNC connector for input of RF signals .
Female BNC connector for output of X- Axis scan signal
Female BNC connector for output of video signal
Phone jack for output of audio signal
PUSHBUTTONS AND SWITCHES :
6. Power
Two position rocker switch that controls the input power to
the receiver .
7 . RF Input # 1
Pushbutton switch to select RF Input #l ; includes light
emitting diode ( LED ) which lights when RF Input # 1 connec
tor is selected .
8. RF Input # 2
Pushbutton switch to select RF Input #2 ; includes indicator
LED
9. Input Attenuation Dual pushbutton switches to select input signal attenuation
level .
10. Bandwidth
Dual pushbutton switches to select bandwidth
11. Keypad
15 pushbutton switches used to enter frequencies and rates ,
decimal point location , tuning resolution , and repetition
modes .
12. Alt
Pushbutton switch ( nested with keypad ) ( with LED indicators )
used to select secondary modes and functions
13. Tuning resol./scan Three pushbutton switches ( with LED indicators ) used to
select display resolution and to control the scan mode
14. Tuning
Dual pushbutton switches for tuning
15. AM slide back
Pushbutton switch ( with LED indicator ) to activate optional
slide back
16. Pulse stretch
Pushbutton switch ( with LED indicator ) to activate optional
pulse stretch
17. BFO
Pushbutton switch ( with LED indicator ) to activate BFO
19

18. Z - Axis ( on )
19. Z- Axis ( inv )
Pushbutton switch ( with LED indicator ) to activate Z - axis
output
Pushbutton switch ( with LED indicator ) to invert Z - axis
output
Pushbutton switch ( with LED indicator ) to select log detection
mode
20. Log
ALPHANUMERIC LED DISPLAYS :
21. Tuning
12 -character display for frequency presentation
22. Input Attenuation 4 - Character display indicating attenuator setting
23. Gain
4 - Character display indicating receiver gain or delta gain
24. Bandwidth
4- Character display indicating bandwidth setting
11
11
11
LED LIGHT - BAR INDICATORS :
25. Unlock
Synthesizer unlocked
RFOVL
Front - end overload
IF / DET OL IF or video overload
PwrHi
Power line voltage higher than nominal
PwrLo
Power line voltage lower than nominal
Unreg
Power supply out of regulation
AGAIN
Differential gain mode or alt . gain ( CW vs. Impulsive )
AGC
AGC on
Alt BW
Alternative set of narrow BW selected
Thresh
Slideback threshold indication
26. Start
Entering scan mode start frequency
Stop
Entering scan mode stop frequency
Step
Entering step size
Rate
Entering step rate
Scan Scan mode
Tune
Tune mode
Bright
Brightness control mode
Beep
Beeper level control mode
Addr
IEEE - 488 address display mode
Remote
Remote control enabled ; most controls disabled
11
11
M
ROTARY CONTROLS :
27. Tuning
28. Gain
29. Audio
30. BFO
31. Z- Axis
32. Slideback
33. Pulse - stretch
Tunes receiver
Sets receiver gain
Adjusts audio output level
Adjusts BFO frequency
Adjusts Z - axis output amplitude
Adjusts AM slideback threshold
Adjusts Pulse stretch
AUDIBLE ALARM :
34. Beeper
Sounds when operational limit is exceeded .
20

19
POWER
AU
SLIDEBACK
PULBE
STRETCH
BFO
Z
-
A
X
S
OYNAMIC
S
C
I
E
N
C
E
S
M
O
D
E
L
R
-
110
lol
re
1TV
HT
ON
ON
ON
INV
X
-
AXIS
000B
0900
000K
SCAN
DOWN
PAUSE
SCAN
UP
TUNE
SCAN
BRIGHT
STO
RF
INPUT
8
9
STEP
INPUT
ATTENUATION
MOED
LOG
STEP
RATE
BEEP
GAIN
BANDWIDTH
TUNING
4
5
b
M
RCL
K
AGC
H
STOP
ADOR
AGAIN
2
AUDIO
START
ALT
BW
RESET
( 0 )
0
28
12
10
(
27
)
14
29
FIGURE
3-1
FRONT
P
A
N
E
L

Table 3-2 Rear Panel Nomenclature
CONNECTORS :
A Ref.Oscillator
B Signal Monitor
с Z - Axis
D
IF Output
E 1450 MHz IF Output
F IEEE - 488 Interface
G Status / Control
H AC Input
Ground Stud
Female BNC for frequency reference
Female BNC for IF monitor ( prior to BW filtering )
Female BNC for Z - axis monitoring
Female BNC for IF output ( after BW filtering )
Female BNC for Wide BW IF ( 1450 MHz ) ( optional )
Std . IEEE - 488 Bus Conn .
Female 25D Conn . for Status/ Control discretes
3 - contact NEMA Receptacle with line fuses
1/4 " x20 Single - point ground for receiver
I
SWITCHES :
Line Voltage Range
K Line Voltage Adjust
J
115/230 vac select
Line voltage adjustment switch
3.3
Modes of Operation
The primary modes of operation of the R -110 are " Tune " , " Scan " , " Downconverter " , and " Remote " .
Tune : The tune mode is the normal mode of operation . In this mode the receiver is tuned using
the rotary tuning control ( 27 ) or the pushbuttons ( 14 ) . The TUNE lightbar is illuminated in this
mode .
Scan : In the scan mode , the receiver automatically scans a preset frequency range , using
preselected step size and rate . The SCAN lightbar is illuminated in this mode .
Downconverter : This mode is enabled when the R - 110 is integrated with the R- 1180 Microwave
Downconverter . Tuning and gain control are accomplished with the Microwave Downconverter's
controls and displays , with the R- 110 automatically tracking to receive and process the
downconverted signal . All of the other R -110 functions are available , including bandwidth and
detection mode selection . Communication between the units is via the IEEE - 488 bus . The
REMOTE lightbar is illuminated in this mode .
Remote : In the remote mode the R- 110 is under control of a host processor . Control is
accomplished via the IEEE - 488 bus . The REMOTE lightbar is illuminated in this mode .
In addition to these primary modes , additional modes are provided for entry of parameters and
control , including selection of display brightness and beep loudness , storage and recall of panel
settings , AGC activation , and IEEE -488 address display / selection .
The modes are summarized in the condensed procedures in Para . 3.5 and discussed in detail in Para .
3.6 , below .
22

K
A
115
230
6
5
2
4
3
STATUS 1
4 5 0 MHz REF
SIG
Z 21.4
M H z
IF
OSC
MON
AXIS IF
IEEE
-488
GND
Н.
FIGURE 3-2
REAR
P A N E L