Quasonix TIMTER QSX-V Series User manual

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Quasonix, Inc.
Copyright Quasonix, Inc., All Rights Reserved.
TIMTERTM Multi-mode Digital Telemetry Transmitter
Installation and Operation Manual
Quasonix, Inc.
6025 Schumacher Park Dr.
West Chester, OH 45069
23 February 2021
Revision 3.9.2
Specifications subject to change without notice.
All Quasonix transmitter products are under U.S. Department of Commerce jurisdiction and categorized
as EAR99; not covered by ITAR.

TIMTER™ Multi-mode Digital Telemetry Transmitter
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Quasonix, Inc.
Table of Contents
1Introduction ............................................................................................................................................1
1.1 Description...................................................................................................................................1
1.2 Nomenclature ..............................................................................................................................1
1.3 Part Number Field Codes............................................................................................................4
1.3.1 Frequency Bands ....................................................................................................................4
1.3.2 Clock and Data Interface.........................................................................................................6
1.3.3 Serial Control Interface............................................................................................................7
1.3.4 ARTM Tier 0 (PCM/FM) ..........................................................................................................8
1.3.5 ARTM Tier I (SOQPSK-TG) ....................................................................................................8
1.3.6 ARTM Tier II (Multi-h CPM).....................................................................................................8
1.3.7 Legacy.....................................................................................................................................8
1.3.8 RF Output Power.....................................................................................................................9
1.3.9 Packages.................................................................................................................................9
1.3.10 Automatic Carrier Wave Output Option –AC........................................................................10
1.3.11 Auto Carrier Save Option –ACS...........................................................................................10
1.3.12 Auxiliary Input Option –AI.....................................................................................................10
1.3.13 Adapter Plate –AP................................................................................................................11
1.3.14 Baud Rate Option –BRx.......................................................................................................11
1.3.15 CP07 Control Protocol Option –C7 ......................................................................................11
1.3.16 Convolutional Encoder Option –CE .....................................................................................11
1.3.17 Clock-free Baseband Interface Option –CF .........................................................................12
1.3.18 Clock Generator Output Option –CG ...................................................................................13
1.3.19 Dual Power Option –DP.......................................................................................................13
1.3.20 Digital Switch Box Option –DSWBX.....................................................................................13
1.3.21 Ethernet Payload Capability –EN.........................................................................................13
1.3.22 Analog Frequency Modulation –FM .....................................................................................14

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1.3.22.1 Using True Analog FM..................................................................................................14
1.3.23 Frequency Offset –FO..........................................................................................................14
1.3.24 GPS Notch Option –GN .......................................................................................................14
1.3.25 High Bit Rate Option –HR ....................................................................................................14
1.3.26 Internal Clock and Data Option –ID......................................................................................15
1.3.27 IN Frequency Band Option –IN............................................................................................15
1.3.28 IN Frequency Band High Limit –INH....................................................................................15
1.3.29 IN Frequency Band Low Limit –INL......................................................................................15
1.3.30 Limited Current Option –LC..................................................................................................15
1.3.31 Forward Error Correction / Low Density Parity Check (LDPC) Option –LD.........................15
1.3.32 Forward Error Correction / Low Density Parity Check (LDPC) Option –LD6.......................15
1.3.33 Low Bit Rate Option –LR......................................................................................................16
1.3.34 Space Operations and Research S band Option –MA ........................................................16
1.3.35 Space Operations and Research S band High Limit Option –MAH.....................................16
1.3.36 Space Operations and Research S band Low Limit Option –MAL......................................16
1.3.37 The standard Randomizer Control Option –MK...................................................................16
1.3.38 Modulation Scaling Option –MS...........................................................................................16
1.3.39 MDM-9 Accessory Board –P9..............................................................................................16
1.3.40 Parallel Port Frequency Programming Option –PF..............................................................16
1.3.41 Parallel Port Mode Selection Option –PM............................................................................17
1.3.42 Hardware Preset Option –PS (PS2, PS4, PS8, or PS16)....................................................17
1.3.43 Power Output Option –PW020.............................................................................................17
1.3.44 Recall Holdoff Option –RH...................................................................................................17
1.3.45 Randomizer Output Option –RN ..........................................................................................17
1.3.46 Spacecraft Tracking and Data Network Option –STDN.......................................................17
1.3.47 Variable FIFO Depth Option –VF.........................................................................................17
1.3.48 Variable Power Option –VP..................................................................................................17

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1.3.49 Wide Input Voltage Range Option –WV...............................................................................18
1.3.50 External Device Control –XD................................................................................................18
2Accessories..........................................................................................................................................19
2.1 Fan-cooled Heat Sink ................................................................................................................19
2.2 Transmitter-powered Heat Sink (for airborne applications).......................................................20
2.3 Adapter Plate.............................................................................................................................22
2.4 Pre-wired MDM-15 for RS-422 Units.........................................................................................22
2.5 Pre-wired MDM-15 for TTL Units...............................................................................................23
2.6 MDM-15 Wiring Harness for RS-422 Units................................................................................23
2.7 MDM-15 Wiring Harness for TTL Units .....................................................................................24
2.8 Ruggedized Handheld Programmer..........................................................................................24
2.9 USB to Serial Converter Cable..................................................................................................25
2.10 2nd Generation Digital Switch Box .............................................................................................26
3Installation Instructions ........................................................................................................................27
3.1 Mechanical.................................................................................................................................27
3.2 Thermal......................................................................................................................................29
3.3 Electrical ....................................................................................................................................29
4Operating Instructions..........................................................................................................................32
4.1 Power-on Operation...................................................................................................................32
4.1.1 Dual Power via Hardware Control.........................................................................................32
4.1.2 2nd Generation Switch Box Notes ........................................................................................32
4.2 TIMTER™ Serial Control Protocol.............................................................................................32
4.2.1 Command Set: Standard and Optional Commands..............................................................33
4.2.1.1 Additional Command Set Details ......................................................................................59
4.2.1.1.1 Automatic Carrier Output –AC................................................................................59
4.2.1.1.2 Baseband Clock –BBCK.........................................................................................59
4.2.1.1.3 Clock Free Bit Rate –BR ........................................................................................60
4.2.1.1.4 Baseband Interface Type - BT.................................................................................62
4.2.1.1.5 Convolutional Encoder –CC...................................................................................62
4.2.1.1.6 Clock Generator Source Select Command –CG....................................................62

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4.2.1.1.7 Frequency Offset –FO............................................................................................62
4.2.1.1.8 Frequency –FR.......................................................................................................63
4.2.1.1.9 Internal Clock Rate –IC ..........................................................................................63
4.2.1.1.10 Input Source Selection Command –IS .................................................................63
4.2.1.1.11 Low Density Parity Check (LDPC) Command –LD ..............................................66
4.2.1.1.12 Overtemperature Control –OC .............................................................................67
4.2.1.1.13 RF Output –RF .....................................................................................................67
4.2.1.1.14 RF Output State –RFS .........................................................................................68
4.2.1.1.15 Set Configuration Priority –SC..............................................................................68
4.2.1.1.16 Frequency Sweep –SW........................................................................................69
4.2.1.1.17 System Status Command –SY.............................................................................69
4.2.1.1.18 External Device Control Command –XDC ...........................................................71
4.2.1.1.19 External Device Channel Command –XDCH.......................................................72
4.2.1.1.20 External Device Frequency Switching Threshold Command –XDF.....................72
4.2.1.1.21 External Device Polarity Invert Command –XDP.................................................73
5RF Output Notes..................................................................................................................................74
5.1 Troubleshooting the RF on a Quasonix Transmitter .................................................................74
6Performance Specifications.................................................................................................................77
6.1 RF Output ..................................................................................................................................77
6.2 Electrical Current .......................................................................................................................77
6.3 Environmental Specifications.....................................................................................................78
6.3.1 EMI Performance...................................................................................................................78
6.4 Carrier Frequency Tuning..........................................................................................................79
6.5 Carrier Frequency Error.............................................................................................................81
6.6 Bit Error Rate.............................................................................................................................81
6.7 Modulated RF Power Spectrum ................................................................................................82
6.8Phase Noise Power Spectrum...................................................................................................84
6.9 Baseplate Temperature.............................................................................................................85
6.10 Vibration and Shock...................................................................................................................85
6.10.1 Vibration Testing....................................................................................................................87
6.10.2 Shock Testing........................................................................................................................90
7Maintenance Instructions.....................................................................................................................94
8Product Warranty.................................................................................................................................95
8.1 Quasonix Limited Warranty Statement......................................................................................95

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8.1.1 Extended Warranties.............................................................................................................96
9Technical Support and RMA Requests................................................................................................97
10 Appendix A –Preset Option.............................................................................................................98
11 Appendix B –Legacy Binary Protocol Notes ...................................................................................99
11.1 Known Limitations of Binary Protocol < V1.005 ........................................................................99
11.2 Items Not Supported By the Legacy Transmitter.......................................................................99
12 Appendix C –Understanding Clock/Data, AC, and BR .................................................................100
13 Appendix D –Acronym List............................................................................................................102
List of Figures
Figure 1: Quasonix Part Number Construction Description..........................................................................1
Figure 2: FPCM Signal on Oscilloscope .....................................................................................................10
Figure 3: CCSDS 131.0-B-1 Rendering of Basic Convolutional Encoder Diagram....................................12
Figure 4: Fan-cooled Heat Sink and Power Supply....................................................................................19
Figure 5: Fan-cooled Heat Sink with 6 cubic inch TIMTER™.....................................................................19
Figure 6: Transmitter-powered Heat Sink, Pigtail Cable, SMA Extender, and Adapter Plate ....................20
Figure 7: Transmitter-powered Heat Sink Mounted on an 04AB Package.................................................21
Figure 8: Transmitter-powered Heat Sink Mounted on a 07AE Package...................................................21
Figure 9: Close-up Using Female MDM-15 Connector...............................................................................22
Figure 10: Close-up Using Male MDM-15 Connector.................................................................................22
Figure 11: Adapter Plate.............................................................................................................................22
Figure 12: Pre-wired MDM-15 with 36” Pigtails for RS-422........................................................................23
Figure 13: Pre-wired MDM-15 with 36” Pigtails for TTL..............................................................................23
Figure 14: MDM-15 Cable Harness for RS-422..........................................................................................24
Figure 15: MDM-15 Cable Harness for TTL................................................................................................24
Figure 16: Ruggedized Handheld Programmer ..........................................................................................25
Figure 17: USB to Serial Converter Cable..................................................................................................25
Figure 18: Digital Switch Box with 18” MDM-9 to MDM-9 Cable Harness..................................................26
Figure 19: 4.2 in3 TIMTER™ ......................................................................................................................27
Figure 20: Outline Drawing, TIMTER™ 04AB Telemetry Transmitter ........................................................28
Figure 21: Example Quasonix Pinout Drawing ...........................................................................................30
Figure 22: Baseband Signal Timing............................................................................................................31

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Quasonix, Inc.
Figure 23: TIMTER™ Welcome Message ..................................................................................................33
Figure 24: PCM/FM (Tier 0) Power Spectral Density with Mask ................................................................83
Figure 25: SOQPSK-TG (Tier I) Power Spectral Density with Mask..........................................................83
Figure 26: MULTI-h CPM (Tier II) Power Spectral Density with Mask .......................................................84
Figure 27: Phase Noise Limit Curve ...........................................................................................................85
Figure 28: Vibration / Shock Testing System..............................................................................................86
Figure 29: TIMTER™ Mounted for Z-axis Testing......................................................................................86
Figure 30: TIMTER™ Mounted for X-axis Testing......................................................................................87
Figure 31: TIMTER™ Mounted for Y-axis Testing......................................................................................87
Figure 32: TIMTER™ Vibration Profile .......................................................................................................87
Figure 33: Z-axis Vibration Spectrum .........................................................................................................88
Figure 34: Y-axis Vibration Spectrum .........................................................................................................89
Figure 35: X-axis Vibration Spectrum .........................................................................................................89
Figure 36: Shock Pulse, Z-axis Positive .....................................................................................................90
Figure 37: Shock Pulse, Z-axis Negative....................................................................................................91
Figure 38: Shock Pulse, Y-axis Positive.....................................................................................................91
Figure 39: Shock Pulse, Y-axis Negative....................................................................................................92
Figure 40: Shock Pulse, X-axis Positive.....................................................................................................92
Figure 41: Shock Pulse, X-axis Negative....................................................................................................93
Figure 42: Transmitter Clock and Data Logic ...........................................................................................101
List of Tables
Table 1: Model Configuration Example.........................................................................................................3
Table 2: Frequency Band Codes ..................................................................................................................4
Table 3: Clock and Data Interface Codes.....................................................................................................6
Table 4: Serial Control Interface Codes........................................................................................................7
Table 5: ARTM Tier 0 Codes ........................................................................................................................8
Table 6: ARTM Tier I Codes .........................................................................................................................8
Table 7: ARTM Tier II Codes ........................................................................................................................8
Table 8: Legacy Codes.................................................................................................................................8
Table 9: RF Output Power Codes.................................................................................................................9
Table 10: Package Codes.............................................................................................................................9
Table 11: Standard Data Bit Rates and Rate Adaptation Compared to Clock Free Data Bit Rates ..........13
Table 12: Standard Bit Rates Compared to Low/High Rate Options..........................................................15

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Table 13: Standard and Optional User Commands....................................................................................34
Table 14: DC Input Current at Standard Input Voltage...............................................................................77
Table 15: TIMTER™ Environmental Specifications....................................................................................78
Table 16: TIMTER™ EMI Compliance........................................................................................................78
Table 17: Carrier Frequencies (MHz) .........................................................................................................79
Table 18: Transmitter BER Specifications with Quasonix Demodulator.....................................................81
Table 19: K and m Values per Waveform...................................................................................................82
Table 20: Random Vibration Spectrum.......................................................................................................88
Table 21: Transmitter Priority of CS, CF, BR, and AC When RF is On....................................................100

TIMTER™ Multi-mode Digital Telemetry Transmitter
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Quasonix, Inc.
1 Introduction
1.1 Description
This document describes the Installation and Operation of Quasonix’ TIMTERTM Multi- mode Digital Telemetry
Transmitters. The transmitters are designed to transmit airborne telemetry data from a test article to ground stations.
The transmitters are developed, manufactured, and supported by:
Quasonix, Inc.
6025 Schumacher Park Drive
West Chester, OH 45069
CAGE code: 3CJA9
Refer to Appendix B for Legacy transmitter binary protocol information (binary protocol < V1.005).
1.2 Nomenclature
The earliest models of these transmitters were referred to as Tier I Missile Test Transmitters (TIMTER™) because
they were intended for missiles and offered only ARTM Tier I (SOQPSK) modulation. Although the model line now
includes much more than ARTM Tier I, and they are in widespread use on many platforms besides missiles, the
“TIMTER” name remains. Now in its third generation and commonly referred to as TIMTER™ 3, the transmitter is
available in a number of variations, depending on the options specified at the time of order. The type of features and
modes installed in each unit are identified in the model number, as depicted in Figure 1. Package field codes are
listed in Table 10. For questions about specific packages, please contact Quasonix.
Figure 1: Quasonix Part Number Construction Description
In this manual, the words Terminal Control and Serial Control have the same meaning and are used synonymously
throughout this manual. Serial control originates from configuring the transmitter from a computer’s legacy RS-
232/422 serial communications (COM) port. Terminal Control reflects the more generic case where the transmitter
could be controlled by other standard computer interfaces such as Ethernet.
QSX-V S B 2 1 1- 1 0 05- - 04 -04AB -CF
Transmitter Part Numbering Example
PCM/FM
SOQPSK-TG
Legacy
Standard
Prefix
Frequency Band Code
(refer to page2 for list)
Clock andData
Interfacecode
(refer to page4
forlist)
Serial Control Interface
2 = RS-232
T= TTL
Mode:
1= Enabled
0=Not enabled
ARTM CPM
Options, separated
by hyphens
(example clock
free)
PackageCode
(refer to page 3)
Pinout Code
(Contact
Quasonix)
PowerCode
(refer to table
this page)

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The nanoTX transmitter models are covered in a separate user manual, available for download from the company
website: www.quasonix.com.
The available TIMTER™ software and hardware options are listed below. Refer to section 1.3 for detailed
descriptions of each option.
•AC Automatic carrier wave output
•ACS Auto carrier save
•AI Auxiliary Input for digital data that is already premod filtered
•AP Adapter plate for 2.5” x 3.5” footprint – Include this hardware accessory with order
•BRx Request non standard baud rate for serial control
•C7 Quasonix interpretation of IRIG 106-17 Appendix 2-C serial control protocol
•CE Convolutional encoder (includes NRZ-M encoding) (k=7 rate 1/2)
•CF Clock-free baseband interface
•CG Clock generator output to baseband connector
•DP Dual power (Ability to set a low and a high setting, hardware controlled*)
•DSWBX Includes switch box and 18” MDM-9 to MDM-9 cable harness (For use with P9 option)
•EN Ethernet Payload Capability
•FM Allows the TIMTER™ to function as an analog FM transmitter
•FO Frequency Offset
•GN GPS notch filters to meet -147 dBm/Hz at L1 and L2 (S band only) –Include this hardware option
with order
•HR Increases max bit rate up to 46 Mbps (23 Mbps for PCM/FM)
•ID Internal Clock and Data can be saved as a power-up default
•IN Inmarsat frequency band range
•INH Inmarsat frequency extended band high limit
•INL Inmarsat frequency extended band low limit
•LC Low current in the RF Off state, 10 mA (hardware option)
•LD LDPC forward error correction encoding
•LD6 Extended LDPC
•LR Decreases min bit rate to 50 kbps (25 kbps for PCM/FM)
•MA Below Lower S band (for Space Operations and Space Research applications)
•MAH Below Lower S band extended band high limit
•MAL Below Lower S band extended band low limit
•MK Randomizer hardware control –Include this hardware option with order
•MS Modulation scaling
•P9 MDM-9 Accessory board (use with switch box part QSX-AC-SWBX-P9-3B-3M)

TIMTER™ Multi-mode Digital Telemetry Transmitter
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Quasonix, Inc.
•PF Parallel port frequency programming
•PM Parallel port mode selection
•PS Enable hardware presets (specify 2, 4, 8, or 16 –PS2, PS4, PS8, PS16)
•PW020 RF Output 20 mW (+13 dBm)
•RH Recall Holdoff
•RN Randomizer output to baseband connector
•STDN Supports Spacecraft Tracking and Data Network (PM/BPSK) mode
•VF Variable FIFO Depth, controls transmitter latency
•VP Variable power (31 settings, spanning 24 dB), software controlled*
•WV Wide input voltage range
•XD External Device Control
Refer to Table 13 in section 4.2.1 for detailed descriptions of each option. Due to input connector pin count
limitations, certain combinations of options are not available. Please contact Quasonix for support in ordering
TIMTER™ options or for information regarding upgrades to TIMTER™ units that you may already own.
The model number identifies the configuration of the unit. For example, model number QSX-VSTT-1100-10-04-
04AB-CF defines a unit configured as shown in Table 1.
Table 1: Model Configuration Example
Identifiers
Description
QSX
Quasonix product
V
Variable bit rate
S
S band code
T
TTL clock and data interface code
2
RS-232 serial control interface: baud rate 57,600
1100
Tier 0 present, Tier I present, Tier II absent, Legacy absent
10
10 Watt RF output
04
Pinout code 04
04AB
Package code
CF
Clock-free baseband interface option

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1.3 Part Number Field Codes
1.3.1 Frequency Bands
Frequency band codes are listed in Table 2. All frequency bands may be tuned 0.5 MHz above or below the stated
frequency.
Table 2: Frequency Band Codes
Band ID
Code
Band
Minimum
Freq
Maximum
Freq
Default Freq
Tuning
Steps
Max
Power
A
Lower S
2200.5 MHz
2300.5 MHz
2250.5 MHz
0.5 MHz
25 W
B
Mid C and Euro Mid C
5091.0 MHz
5150.0 MHz
5150.0 MHz
5250.0 MHz
5120.0 MHz
0.5 MHz
20 W
C
C “Low”
4400.0 MHz
4950.0 MHz
4620.0 MHz
0.5 MHz
20 W
D
C (with Mid C)
4400.0 MHz
and
5091.0 MHz
4950.0 MHz
and
5150.0 MHz
4620.0 MHz
0.5 MHz
20 W
E
(all) L, S, C
1435.5 MHz
1750.0 MHz
2200.5 MHz
2300.5 MHz
4400.0 MHz
5091.0 MHz
5150.0 MHz
1534.5 MHz
1855.0 MHz
2300.5 MHz
2394.5 MHz
4950.0 MHz
5150.0 MHz
5250.0 MHz
2370.5 MHz
0.5 MHz
10 W
F
S and C
2200.5 MHz
and
4400.0 MHz
2394.5 MHz
and
4950.0 MHz
2370.5 MHz
0.5 MHz
20 W
G
Euro Mid C
5150.0 MHz
5250.0 MHz
5150.0 MHz
0.5 MHz
20 W
H
L and C
1435.5 MHz
and
4400.0 MHz
1534.5 MHz
and
4950.0 MHz
1450.5 MHz
0.5 MHz
10 W
J
C, Mid C, and
Euro Mid C
4400.0 MHz
and
5091.0 MHz
5150.0 MHz
4950.0 MHz
and
5150.0 MHz
5250.0 MHz
4620.0 MHz
0.5 MHz
18 W

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Quasonix, Inc.
Band ID
Code
Band
Minimum
Freq
Maximum
Freq
Default Freq
Tuning
Steps
Max
Power
K
S and C, Mid C, and
(with Euro Mid C)
2200.5 MHz
4400.0 MHz
and
5091.0 MHz
5150.0 MHz
2394.5 MHz
4950.0 MHz
and
5150.0 MHz
5250.0 MHz
2370.5 MHz
0.5 MHz
10 W
L
Lower L
1435.5 MHz
1534.5 MHz
1450.5 MHz
0.5 MHz
20 W
M
Lower L, Upper L, and
S
1435.5 MHz
1750.0 MHz
and
2200.5 MHz
1534.5 MHz
1855.0 MHz
and
2394.5 MHz
1450.5 MHz
0.5 MHz
20 W
N
Upper S
2300.5 MHz
2394.5 MHz
2370.5 MHz
0.5 MHz
25 W
Q
L, S, and C
1435.5 MHz
1750.0 MHz
2200.5 MHz
4400.0 MHz
5091.0 MHz
1534.5 MHz
1855.0 MHz
2394.5 MHz
4950.0 MHz
5150.0 MHz
1450.5 MHz
0.5 MHz
10 W
S
S
2200.5 MHz
2394.5 MHz
2370.5 MHz
0.5 MHz
20 W
T
Lower L and C
1435.5 MHz
4400.0 MHz
5091.0 MHz
1534.5 MHz
4950.0 MHz
5150.0 MHz
1450.5 MHz
0.5 MHz
18 W
V
S and C
(with Mid C)
2200.5 MHz
4400.0 MHz
and
5091.0 MHz
2394.5 MHz
4950.0 MHz
and
5150.0 MHz
2370.5 MHz
0.5 MHz
18 W
W
S, Mid C, and
(with Euro Mid C)
2200.5 MHz
5091.0 MHz
5150.0 MHz
2394.5 MHz
5150.0 MHz
5250.0 MHz
2370.5 MHz
0.5 MHz
18 W
X
Mid C band
5091.0 MHz
5150.0 MHz
5120.0 MHz
0.5 MHz
20 W
Y
L and C
1435.5 MHz
1750.0 MHz
and
4400.0 MHz
5091.0 MHz
1534.5 MHz
1855.0 MHz
and
4950.0 MHz
5150.0 MHz
1450.5 MHz
0.5 MHz
18 W
Z
Lower L and
Euro Mid C
1435.5 MHz
and
5150.0 MHz
1534.5 MHz
and
5250.0 MHz
1450.5 MHz
0.5 MHz
20 W
*Note: Currently the MA option enables below Lower S band frequencies for use in space operations and space
research. Refer to the MA option in section 1.3.34 for additional information or contact Quasonix.

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1.3.2 Clock and Data Interface
Clock and data interface codes are listed in Table 3.
Table 3: Clock and Data Interface Codes
Clock
and Data
Interface
Code
Baseband Clock and Data Interface
Defaults
H
TTL –10k ohms to ground
TTL 10k ohms
T
TTL –75 ohms to ground
TTL 75 ohms
A
TTL –Selectable between 75 ohms to ground and 10k ohms to ground
TTL 75 ohms
R
TIA/EIA-422 (RS-422) –120 ohms differential
422 120 ohms
B
TIA/EIA-422 (RS-422) –120 ohms differential, even when unit is
powered off)
422 120 ohms
M
Dual-mode –Selectable between TTL (terminated 10k ohms to ground)
and RS-422 (terminated 120 ohms differential)
TTL 10k ohms
D
Dual-mode –Selectable between TTL (terminated 75 ohms to ground)
and RS-422 (terminated 120 ohms differential)
TTL 75 ohms
S
Tri-mode –Selectable between TTL (terminated 75 ohms to ground),
TTL (terminated 10k ohms to ground), and RS-422 (terminated 120
ohms differential)
TTL 75 ohms
L
LVDS (Low Voltage Differential Signal)
LVDS

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1.3.3 Serial Control Interface
Serial control interface codes are listed in Table 4.
Table 4: Serial Control Interface Codes
Serial Control
Interface Code
Serial Control Interface
1
LVTTL; 57,600 baud rate
2
RS-232; 57,600 baud rate
T
TTL; 57,600 baud rate
4
RS-422; 57,600 baud rate
6
RS-422; 57,600 baud rate, 120 ohms differential, even when
unit is powered off

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Quasonix, Inc.
1.3.4 ARTM Tier 0 (PCM/FM)
ARTM Tier 0 codes are listed in Table 5.
Table 5: ARTM Tier 0 Codes
Part Number Code
PCM/FM (ARTM Tier 0)
0
Absent
1
Present
1.3.5 ARTM Tier I (SOQPSK-TG)
ARTM Tier I codes are listed in Table 6.
Table 6: ARTM Tier I Codes
Part Number Code
SOQPSK-TG (ARTM Tier I)
0
Absent
1
Present
1.3.6 ARTM Tier II (Multi-h CPM)
ARTM Tier II codes are listed in Table 7.
Table 7: ARTM Tier II Codes
Part Number Code
Multi-h CPM (ARTM Tier II)
0
Absent
1
Present
1.3.7 Legacy
Legacy modes include BPSK, QPSK, and OQPSK. Legacy codes are listed in Table 8.
Table 8: Legacy Codes
Part Number Code
Legacy Modes
0
Absent
1
Present

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Quasonix, Inc.
1.3.8 RF Output Power
RF output power codes are listed in Table 9.
Table 9: RF Output Power Codes
Part Number
Code
RF Output Power
00
10 mW (+10 dBm), ±1 dB
20 mW (+13 dBm), ±1 dB
01
1 watt (+30 dBm), minimum
02
2 watt (+33 dBm), minimum
05
5 watts (+37 dBm), minimum
10
10 watts (+40 dBm), minimum
18
18 watts (+42.5 dBm), minimum
20
20 watts (+43 dBm), minimum
25
25 watts (+44 dBm), minimum
1.3.9 Packages
Package field codes are listed in Table 10. Detailed information for packages other than 04AB is located in the
TIMTER™ Transmitter Packages document, available at the Quasonix web site. For questions about specific
packages, please contact Quasonix.
Table 10: Package Codes
TIMTER™Package
Volume
Width
Length
Height
02XX
1.992 in3
2.000”
3.000”
0.332”
04XX
4.200 in3
2.000”
3.000”
0.700”
05XX
4.800 in3
2.000”
3.000”
0.800”
06XX
6.072 in3
2.000”
3.000”
1.012”
07XX
6.546 in3
2.000”
3.000”
1.091”
6.672 in3
2.000”
3.000”
1.112”
08XX
7.590 in3
2.200”
3.450”
1.000”
8.418 in3
2.000”
3.450”
1.403”
09XX
9.180 in3
2.000”
3.000”
1.530”
*Package dimensions do not include connectors

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Transmitter weight may vary depending on packages and applications. For information about the weight of a
particular transmitter, please contact Quasonix.
1.3.10 Automatic Carrier Wave Output Option –AC
This option allows the TIMTER to transmit a carrier wave when the clock input is absent, which would normally
cause the RF output to be turned off.
1.3.11 Auto Carrier Save Option –ACS
This option allows the TIMTER to transmit a carrier wave when the clock input is absent, which would normally
cause the RF output to be turned off, just like the AC option. ACS uses the saved setting of AC on power up instead
of forcing AC on like the legacy option.
1.3.12 Auxiliary Input Option –AI
The AI option provides an auxiliary input that allows the TIMTER™ to transmit Filtered PCM (FPCM) data. FPCM
is a binary data waveform that has been filtered such that the data transitions are slowed down. The FPCM signal at
the TIMTER, viewed on an oscilloscope, might look something like the following figure.
Figure 2: FPCM Signal on Oscilloscope
The AI option allows the TIMTER™ to replace a legacy analog transmitter, but only for use in transmitting a digital
data stream. Refer to the FM option in section 1.3.23 for configuring the TIMTER™ to transmit a true analog
signal, such as NTSC video. The AI option is frequently used to interface the TIMTER™ to legacy encryption
devices, which often include filtering on their outputs, including a DC blocking capacitor. By default, the Auxiliary
Input is configured to accept an AC-coupled input. The AIR command may be used to select between a zero and a
non-zero DC bias.
The auxiliary input converts the FPCM input back to an unfiltered bit stream, locks an internal bit sync to that bit
stream (refer to the CF option), and then modulates the transmitter based on that digital bit stream, in which case the
deviation and the internal premod filter bandwidth are set by the bit rate, and are independent of the analog voltage
levels presented to the transmitter.
Use of the auxiliary input requires the –AI option. The command for controlling auxiliary input is AI, which
enables/disables the auxiliary input (when disabled, the normal digital input is used). Since there is no clock input,
the Clock Free option (CF) is required. (Refer to section 1.3.15 for more information about Clock Free.)
To configure the TIMTER™ for use with the Auxiliary Input, issue the following commands:
AI = 1 (get data stream from Auxiliary Input)

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CF = 0 (operate clock free)
BR xxx, where xxx = data rate in Mbps, or BR A for automatic data rate
AIR x, where x = 0 for zero DC bias and x = 1 for 1.65V DC bias
1.3.13 Adapter Plate –AP
Use this option to include the 2.5” x 3.5” adapter plate (hardware accessory) with the order.
1.3.14 Baud Rate Option –BRx
The BR option changes the serial communications default baud rate on the transmitter to the one selected. A number
from 0-8 follows the BR option request. Corresponding values are as follows: 0 = 57600 (Standard default for all
Quasonix transmitters); 1 = 4800; 2 = 9600; 3 = 19200; 4 = 38400; 5 = 56000; 6 = 57600; 7 = 115200; 8 = 230400.
1.3.15 CP07 Control Protocol Option –C7
The Quasonix interpretation of IRIG 106-17, Appendix 2-C serial control protocol (CP07), “provides standards for
commands, queries, and status information when communicating with telemetry transmitters configured with
communication ports.” The Basic command set contains the minimum (required) commands for transmitter control,
query, and status. The Extended command set contains optional commands that may or may not be implemented at
the manufacturer’s discretion. CP07 is enabled when the C7 option is requested.
The default baud rate for CP07 transmitters is 9600.
1.3.16 Convolutional Encoder Option –CE
The CE option enables convolutional encoding and NRZ-M conversion. This encoding adds redundant information
to the transmitted data stream to help detect and correct bit errors that may occur, particularly due to predominantly
Gaussian noise. Use of convolutional encoding requires a matching Viterbi decoder in the receiver to extract the
source data. The encoded data rate will be twice the source data rate, and the occupied bandwidth will also be
doubled.
For example, the transmitter has two encoders, one for in-phase (“I”) data and one for quadrature (“Q”) data. Call
the input symbol stream I0/Q0, I1/Q1, … . Each encoder outputs 2 bits for every input bit, so call the output bit
stream from the first convolutional encoder I0(1), I0(2), I1(1), I1(2), … , and call the output bit stream from the
second convolutional encoder Q0(1), Q0(2), Q1(1), Q1(2), … . Combining the outputs of the two encoders, then,
the output symbol stream is I0(1)/Q0(1), I0(2)/Q0(2), I1(1)/Q1(1), I1(2)/Q1(2), … .
For modes that do not employ Quadrature modulation, such as PCM/FM, Multi-h CPM, and BPSK, only a single
encoder is used.
A single encoder is implemented exactly as described in the “Consultative Committee for Space Data Systems,
Recommendation for Space Data System Standards, TM Synchronization and Channel Coding, CCSDS 131.0-B-1,
Blue Book, September 2003, Section 3.”
A basic convolutional encoder block diagram, as illustrated in CCSDS 131.0-B1, is shown in Figure 3.

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Figure 3: CCSDS 131.0-B-1 Rendering of Basic Convolutional Encoder Diagram
1.3.17 Clock-free Baseband Interface Option –CF
Clock-free is an optional mode that transmits user data, but uses an internal bit sync to take the place of the normal
external clock. The standard TIMTER requires external clock and data inputs. With the CF option, no external clock
is required. The clock is generated directly from the data and a user-specified bit rate.
Because the internal bit sync’s clock takes the place of the normal external clock in clock-free mode, the selected
clock source must be external for clock-free just like it is for normal clock/data. This mode is most often used to
retrofit older analog transmitters in TM systems where the crypto device does not deliver a clock to the transmitter.
The commanded clock-free rate can be saved with the SV command, and if so, it will be restored at power-on. When
the CF option is used, the bit rate range is as defined in Table 12 for all waveform modes. It is limited by the bit rate
achievable for the current mode. (Refer also to the HR and LR options for extended bit rates, the ID option for
Internal Clock and Data, and Table 11 for a snapshot of bit rate information.)
Do not confuse the CF option with CS/DS commands.
Internal clock (CS 1 Command) is used when the transmitter is to be a test source only. The unit transmits the
selected internal data pattern (DS 1 command) at the bit rate set by the user via the IC command. The internal clock
is not used to transmit actual payload data.
External clock (CS 0 Command) is the normal mode: the user supplies clock and data, or in clock-free mode, the
user only supplies valid data. Refer to Table 13 for user commands.