Miteq D-9301 User manual

Ref.: XXXXX
OPERATION AND MAINTENANCE MANUAL
FOR
D-9301 DOWNCONVERTER
AUGUST 2004
CUSTOMER
MAXXXXXD
114087F
Rev.B

- ii -
NOTE
The suffix XXXXX following part numbers in this manual is a
unique number assigned at time of order.
This number should be referred to in all correspondence and all
referrals to spare parts.
The reference number is XXXXX.
The D-9301 (9300 Series) Downconverter (MITEQ reference XXXXX)
has been supplied with the following options:
A. AC Power: XXX VAC

- iii -
TABLE OF CONTENTS
SECTION 1
INTRODUCTION
Para. Page
1.1 GENERAL DESCRIPTION . . . . . . . . . . . . . . . . 1-1
1.1.1 PHYSICAL . . . . . . . . . . . . . . . . . . 1-1
1.1.2 FUNCTIONAL . . . . . . . . . . . . . . . . . 1-5
1.2 EQUIPMENT CHARACTERISTICS . . . . . . . . . . . . . 1-6
1.2.1 PHYSICAL . . . . . . . . . . . . . . . . . . 1-6
1.2.2 FUNCTIONAL . . . . . . . . . . . . . . . . . 1-7
1.3 EQUIPMENT REQUIRED . . . . . . . . . . . . . . . . 1-10
1.3.1 EQUIPMENT SUPPLIED . . . . . . . . . . . . . 1-10
1.3.2 EQUIPMENT REQUIRED BUT NOT SUPPLIED . . . . 1-10
SECTION 2
INSTALLATION
2.1 UNPACKING, STORAGE, RESHIPMENT . . . . . . . . . . 2-1
2.2 MOUNTING . . . . . . . . . . . . . . . . . . . . . 2-1
2.3 TURN-ON PROCEDURE . . . . . . . . . . . . . . . . . 2-1

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TABLE OF CONTENTS (Cont.)
SECTION 3
OPERATION
Para. Page
3.1 INTRODUCTION . . . . . . . . . . . . . . . . . . . 3-1
3.2 CONTROLS . . . . . . . . . . . . . . . . . . . . . 3-1
3.2.1 EXTERNAL CONTROLS . . . . . . . . . . . . . 3-1
3.2.2 INTERNAL CONTROLS . . . . . . . . . . . . . 3-3
3.3 OPERATING PROCEDURE . . . . . . . . . . . . . . . . 3-4
3.3.1 LOCAL OPERATION . . . . . . . . . . . . . . 3-4
3.3.1.1 Set Frequency . . . . . . . . . . . . . 3-4
3.3.1.2 Channel Memory . . . . . . . . . . . . . 3-4
3.3.2 REMOTE OPERATION . . . . . . . . . . . . . . 3-5
3.3.2.1 RS422/RS485 Protocol . . . . . . . . . . 3-5
3.3.2.2 Data Transfer . . . . . . . . . . . . . 3-6
3.3.2.2.1 Header Byte . . . . . . . . . . . . 3-6
3.3.2.2.2 Device Address Byte . . . . . . . . 3-6
3.3.2.2.3 Command/Error Codes . . . . . . . . 3-6
3.3.2.2.4 Parameter Bytes . . . . . . . . . . 3-7
3.3.2.2.5 Trailer Byte . . . . . . . . . . . 3-7
3.3.2.2.6 Checksum Byte . . . . . . . . . . . 3-7
3.3.2.3 Command Codes . . . . . . . . . . . . . 3-7
3.3.2.3.1 Frequency Code = F . . . . . . . . . 3-7
3.3.2.3.2 Mute Code = M . . . . . . . . . . . 3-7
3.3.2.3.3 Status All Code = A . . . . . . . . 3-8
3.3.2.3.4 Status Faults Code = ? (Optional) . 3-8
3.3.2.4 Device Address/Baud Rate Selection . . . 3-9
3.3.2.5 Programming Examples . . . . . . . . . . 3-9
3.3.2.6 Remote Interface Connector . . . . . . . 3-10
3.3.2.7 RS422/485 Bus Termination . . . . . . . 3-11
3.3.2.8 Contact Closure Control . . . . . . . . 3-11

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TABLE OF CONTENTS (Cont.)
SECTION 3
OPERATION
Para. Page
3.3.2 REMOTE OPERATION Cont'd.
3.3.2.9 IEEE 488 Control . . . . . . . . . . . . 3-11
3.3.2.9.1 Device Address/Service Request Enable 3-11
3.3.2.9.2 Data Input Messages . . . . . . . . 3-11
3.3.2.9.2.1 Frequency Set . . . . . . . . . 3-11
3.3.2.9.2.2 Mute . . . . . . . . . . . . . . 3-12
3.3.2.9.2.3 Set/Store Frequency in Channel nn 3-12
3.3.2.9.2.4 Recall Frequency from Channel nn 3-12
3.3.2.9.2.5 Data Format . . . . . . . . . . 3-12
3.3.2.9.2.6 Frequency Format . . . . . . . . 3-12
3.3.2.9.2.7 Status Faults Format . . . . . . 3-13
3.3.2.9.2.8 Status All Format . . . . . . . 3-13
3.3.2.9.2.9 Channel Format . . . . . . . . . 3-13
3.3.2.9.2.10 Service Request . . . . . . . . 3-14
3.3.3 EMERGENCY OPERATION . . . . . . . . . . . . 3-14
3.3.4 SHUTDOWN PROCEDURE . . . . . . . . . . . . . 3-14

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TABLE OF CONTENTS (Cont.)
SECTION 4
PRINCIPLES OF OPERATION
4.1 INTRODUCTION . . . . . . . . . . . . . . . . . . . 4-1
4.2 FUNCTIONAL DESCRIPTION . . . . . . . . . . . . . . 4-1
4.3 SUBSYSTEMS AND COMPONENTS FUNCTIONAL DESCRIPTION . 4-5
4.3.1 SIGNAL PATH . . . . . . . . . . . . . . . . 4-5
4.3.1.1 Input Filter, Isolators
(A2A1, A2A2, A2A3) . . . . . . . . . . 4-5
4.3.1.2 Mixer, First Conversion (A2A4) . . . . . 4-6
4.3.1.3 Amplifier, Isolator, Filter
(A2A5 to A2A7) . . . . . . . . . . . . 4-7
4.3.1.4 Downconverter Module (A2A8) . . . . . . 4-9
4.3.2 LOCAL OSCILLATOR . . . . . . . . . . . . . . 4-10
4.3.2.1 5 MHz Reference (A3A1) . . . . . . . . . 4-10
4.3.2.2 Frequency Synthesizer (A3A2) . . . . . . 4-11
4.3.2.3 1170 MHz Phase Locked Source (A3A6) . . 4-12
4.3.3 CONVERTER CONTROLLER . . . . . . . . . . . . 4-14
4.3.4 POWER SUPPLY, LOW PASS FILTER . . . . . . . 4-15
SECTION 5
MAINTENANCE
5.1 INTRODUCTION . . . . . . . . . . . . . . . . . . . 5-1
5.2 PREVENTIVE MAINTENANCE . . . . . . . . . . . . . . 5-1
5.2.1 DC VOLTAGE . . . . . . . . . . . . . . . . . 5-1
5.2.2 GAIN OF THE CONVERTER . . . . . . . . . . . 5-3
5.2.3 FREQUENCY MEASUREMENT . . . . . . . . . . . 5-3
5.2.4 LOCAL OSCILLATOR PHASE LOCK TEST POINT
(PHASE VOLTAGE) . . . . . . . . . . . . . 5-3
5.3 CORRECTIVE MAINTENANCE . . . . . . . . . . . . . . 5-4
5.3.1 POWER SUPPLY MALFUNCTION . . . . . . . . . . 5-4
5.3.2 LOCAL OSCILLATOR . . . . . . . . . . . . . . 5-4
5.3.3 CONVERTER, SIGNAL CHAIN . . . . . . . . . . 5-4

- vii -
TABLE OF CONTENTS (Cont.)
SECTION 6
DIAGRAMS
Para. Page
6.1 INTRODUCTION . . . . . . . . . . . . . . . . . . . 6-1
TABLES
Number Page
1-1 Equipment Supplied . . . . . . . . . . . . . . . . 1-10
1-2 Test Equipment Required But Not Supplied . . . . . 1-10
2-1 External Connections . . . . . . . . . . . . . . . 2-2
5-1 Parts List - D-9301 Downconverter . . . . . . . . 5-5
6-1 List of Diagrams . . . . . . . . . . . . . . . . . 6-1
FIGURES
1-1 Front View, D-9301 Downconverter . . . . . . . . . 1-2
1-2 Rear View, D-9301 Downconverter . . . . . . . . . . 1-3
1-3 Interior View, D-9301 Downconverter . . . . . . . . 1-4
3-1 Front Panel Layout, 9300 Series Converter . . . . . 3-2
3-2 RS422/RS485 Bus Termination Jumpers, 9300 Series
Converter . . . . . . . . . . . . . . . . . . . . 3-15
4-1 Block Diagram, D-9301 Downconverter . . . . . . . . 4-2
4-2 Block Diagram, 1170 MHz Phase Lock Source (A3A6) . 4-13
5-1 Test Setup for Gain, Gain Ripple and Frequency
Response Measurement . . . . . . . . . . . . . . 5-2
DIAGRAMS
6-1 Wiring Diagram . . . . . . . . . . . . . . . . . . 6-2
6-2 Schematic Diagram, Converter Controller 9300 Series 6-11
6-3 Assembly Diagram, Converter Controller 9300 Series 6-12
APPENDIX
A Power Supply Manual (FS05-113) . . . . . . . . . . 6-14

1-1
SECTION 1
INTRODUCTION
1.1 GENERAL DESCRIPTION
1.1.1 PHYSICAL
The physical configuration of the D-9301 Downconverter is shown
in Figures 1-1 through 1-3. The main chassis houses all RF
components, control circuitry and power supplies.
The converter chassis is 19" x 22" x 3.5" panel height. Slides
are provided for mounting in a standard 19" (EIA) equipment rack.
The following items are found on the front of the converter:
A. On/Off Power Switch (A1A2)
B. LO Out-of-Lock LEDs
C. Memory, Store Key
D. Memory, Recall Key
E. Display
F. Gain Adjustment Potentiometer
G. Data Entry Keypad
H. Remote Mode Select Key
The following items are found on the rear of the converter:
A. RF Input Connector (J1)
B. IF Output Connector (J2)
C. Summary Alarm Connector (J3)
D. Remote Interface Connector (J6)
E. Redundancy Switch Connector (J7)
F. Address Select Switch
G. AC Voltage Input
H. Fuse, 2.0A for 120VAC, 1.0A for 220VAC
I. Fan (A1A5)

Display
Local Oscillator
Out-of-Lock Alarms
Data
Entry
Keypad
Memory
Store
Memory
Recall
Gain
Adjust
Potentiometer
Remote
Mode
Select
A1A2
AC Power
On/Off
Switch
1-2
#3805
Figure 1-1. Front View, D-9301 Downconverter

A1A1
AC Voltage
Input/Fuse
A1A5
Fan
J3
Summary
Alarm Address
Select
Local Oscillator
Test Points
DC Voltage
Test Points
Ground
Lug J7
Redundant
Switching J6
Remote
Interface
J2
IF Output J1
RF Input
1-3
Figure 1-2. Rear View, D-9301 Downconverter
#3805

#3805
1-4
Figure 1-3. Interior View, D-9301 Downconverter
A1A1 A1A3
A1A4
A1A2
A4A1B
A3A2
A2A6
A2A7
A3A3
A2A5
A3A4
A3A5
A2A4
A2A3
A2A2
A2A1
A2A8
A3A6
A3A7
A3A1
A1A5

1-5
J. Ground Lug
K. LO Frequency/Power Monitors
L. LO Phase Lock Voltage Test Points
M. DC Voltage Test Points
1.1.2 FUNCTIONAL
The MITEQ 9300 Series Converter combines a state of the art
communications converter with microprocessor-controlled digital
circuitry to provide flexibility and convenience for the station
operator.
The converter translates the 3.7-4.2 GHz frequency band to the
70 ±20 MHz output frequency band. Phase noise, amplitude
flatness, group delay, and spurious outputs have been given
optimum consideration to provide the user with a transparent
frequency conversion for all video and data applications.
RF frequency may be selected from the front panel in 125 kHz
increments. Non-volatile memory allows the operator to store up
to thirty channel frequencies.
Remote operation is available via the RS485 (serial) interface.
The status of the converter's functions and alarms may also be
read through the remote interface (optional). Device address is
selectable at the rear panel.
Relays are provided for summary alarm output which may be used
for monitoring at a remote console and for redundant switching.
AC voltage input is selectable at the rear panel (100, 120, 220,
230/240VAC).

1-6
1.2 EQUIPMENT CHARACTERISTICS
1.2.1 PHYSICAL
A. Weight: 30 pounds nominal
B. Overall Dimensions: 19" x 22" x 3.5" panel height
C. Signal Input Connector
(J1): N female
D. Signal Output Connector
(J2): BNC female
E. Summary Alarm Connector
(J3): DE-9P
F. Remote Interface Connector (J6) -
1. RS485/RS422: DE-9S
2. RS232: DB-25P
3. Contact Closure: DB-25S
4. IEEE 488: IEEE 488 receptacle
G. Redundancy Switch
Connector (J7): DE-9P

1-7
1.2.2 FUNCTIONAL
A. Gain, Frequency Response -
1. Input Frequency: 3.7-4.2 GHz
2. Output Frequency: 70 ±20 MHz
3. Gain: 30 dB nominal
Nominal
Gain Converter
Option Gain
Number (dB)
16A 45
16C 55
4. Amplitude Response: ±20 MHz at 0.5 dB
±18 MHz at 0.4 dB
5. Gain Adjustment: 6 dB nominal (no options)
30 dB minimum (Option 3C)
B. Group Delay (±18 MHz) -
1. Standard -
a. Linear: 0.03 ns/MHz
b. Parabolic: 0.01 ns/MHz²
c. Ripple: 1 ns peak-to-peak
2. Option 5A: 1 ns peak-to-peak total
group delay
C. VSWR -
1. Input: 20 dB return loss/50 ohms
2. Output: 26 dB return loss/75 ohms
(50 ohms optional)
D. Third Order
Intermodulation: For two inband signals at an output
level of -10 dBm, intermodulation
products 60 dBc minimum

1-8
E. Noise Figure: 12 dB maximum
F. Image Rejection: 80 dB maximum
G. Spurious -
1. Dependent: -65 dBc
2. Independent: -90 dBm inband (no options)
-75 dBm inband (Option 16A)
-65 dBm inband (Option 16C)
H. Frequency Selection: 3.7-4.2 GHz in 125 kHz
increments
1. Channel Memories: 30 (non-volatile)
I. Primary Power: Selectable at the rear panel
(100, 120, 220, 230/240VAC)
J. Rear Panel Test Points -
1. RF LO Phase Voltage: Variable with frequency
2. IF LO Phase Voltage: 10 ±2V
3. RF LO Frequency/
Power Test Point: -15 dBm minimum, 4800-5300 MHz
4. IF LO Frequency/
Power Test Point: -15 dBm minimum, 1170 MHz
5. DC Voltage
Test Points: +20 ±0.5V
+5.2 ±0.1V
+5.2 ±0.1V

1-9
K. Summary Alarm Connector (J3) Pin Designations -
1. DC Power Status -
a. Normal: 1-2 open, 2-3 closed
b. Fault: 1-2 closed, 2-3 open
2. Summary Alarm -
a. Normal: 4-5 open, 5-6 closed
DC Power Normal and Local Oscillators In-Lock
and LO Level Normal (Option 8 Only)
b. Alarm: 4-5 closed, 5-6 open
DC Power Fault or Local Oscillator(s) Out-of-Lock
or LO Level Low (Option 8 Only)
L. Redundancy Switch Connector (J7) Pin Designations -
1. Normal: 1-2 open, 2-3 closed
DC Power Normal and Local Oscillators In-Lock
and LO Level Normal (Option 8 Only)
2. Alarm: 1-2 closed, 2-3 open
DC Power Fault or Local Oscillator(s) Out-of-Lock
or LO Level Low (Option 8 Only)

2-1
SECTION 2
INSTALLATION
2.1 UNPACKING, STORAGE, RESHIPMENT
Carefully open the shipping container and remove the equipment.
Weight of the converter is approximately 30 pounds. Inspect the
equipment thoroughly and report any damage.
If the equipment is to be stored, it should be wrapped in plastic
and kept in a clean, dry place.
If the equipment is to be reshipped for any reason, wrap in heavy
plastic and ship in a heavy (275 lb. test), double-wall carton.
At least three inches of a solid packing material should be used
on all sides of the converter. The carton should be marked to
indicate that it contains fragile electronic equipment.
2.2 MOUNTING
The converter chassis is 19" x 22" x 3.5" panel height. Slides
are provided for mounting in a standard 19" (EIA) equipment rack.
The converter should be securely mounted.
2.3 TURN-ON PROCEDURE
After mounting, make all external connections per Table 2-1.
Refer to Section 1 for the physical configuration of the
converter.
Apply power to the converter using the front panel power On/Off
switch.
Allow one half hour minimum for oven warm-up in the internal
crystal oscillator.
All LO fault lights should be off.
System is now operational.

3-1
SECTION 3
OPERATION
3.1 INTRODUCTION
The following paragraphs describe the controls, adjustments and
procedures for turn-on, operation, emergency operation and shut
down of the converter.
3.2 CONTROLS
3.2.1 EXTERNAL CONTROLS (Figures 1-1, 1-2 and 3-1)
A. On/Off switch (A1A2) applies AC power to the converter
B. Fuse (A1A1): 2.0A for 100 and 120 VAC
1.0A for 220 and 230/240 VAC
C. AC Power Selection (A1A1)
Voltage input is selected using a card located below the fuse on
the AC input connector. The selected voltage input is indicated
on the installed card. To change the voltage input, pull the
card out and replace it with the desired voltage facing out. The
card can be used to set the AC input voltage to 100, 120, 220, or
230/240 VAC.
D. Gain Control
The front panel potentiometer provides 6 dB minimum of gain
control. If Option 3C is ordered the front panel potentiometer
will provide a minimum of 30 dB gain control.
E. Data Entry Section
The keyboard is used for all numeric entry into the converter. A
tone will sound for data entry error. There are two keys on the
keyboard in addition to the standard numeric keypad and decimal
point:
1. "CL" - This key is used to clear the LCD display.
2. "ENT" - This key is used to terminate commands.