TIMTER™ Dual Transmitters

Ultimate Bitstream Accuracy Starts Here

Quasonix digital multi-mode dual telemetry transmitters provide the flexibility of two high performance, independent transmitters in one package. The standard 2.0 inch by 3.0 inch design includes a single MDM-15 interface as a primary connector for power, clock and data, and serial communications, while providing two separate RF outputs via SMA connectors. This configuration is ideal for two antenna applications that utilize Space-Time Coding (STC) or Frequency Diversity. The transmitters are designed to transmit airborne telemetry data from a test article to ground stations.

A legacy side-by-side design is employed in applications requiring bands that currently are not available in the Quasonix TIMTER™ Multi-mode Dual Telemetry Transmitter.

Quasonix TIMTER™ dual transmitter connectors

Quasonix TIMTER™ legacy dual transmitter

Features

Options

Accessories

Features

ARTM Modulations

Quasonix transmitters offer three different modulations of increasing spectral efficiency – PCM/FM, SOQPSK-TG, and Multi-h CPM – also known as ARTM Tiers 0, I, and II, at standard bit rates from 0.1 to 28 Mbps (0.05 to 14 Mbps for PCM/FM). Options (HR/LR) are available to extend the upper limit to a maximum of 46 Mbps (23 Mbps for PCM/FM) and the lower limit to a minimum of 50 kbps (25 kbps for PCM/FM). With bandwidth at a growing premium in flight test telemetry, you can take advantage of 2 to 2.5 times the data capacity of the legacy PCM/FM waveform with SOQPSK-TG and Multi-h CPM.

Product Configurations

RF Output Power

5 W or 10 W per output

Frequency Band

Lower S (2200.5 MHz – 2300.5 MHz)
Mid C and Euro Mid C (5091.0 MHz – 5250.0 MHz)
Lower C (4400.0 MHz – 4950.0 MHz)
C with Mid C (4400.0 MHz – 4950.0 MHz) and (5091.0 MHz – 5150.0 MHz)
C and Euro Mid C (4400.0 MHz – 4950.0 MHz) and (5091.0 MHz – 5250.0 MHz)
Lower L (1435.5 MHz – 1534.5 MHz)
Upper S (2300.5 MHz – 2394.5 MHz)
S (2200.5 MHz – 2394.5 MHz)

Baseband Interface

TTL – 10k ohms to ground
TTL – 75 ohms to ground
TTL – Selectable between 75 ohms to ground and 10k ohms to ground
TIA/EIA-422 (RS-422) – 120 ohms differential
TIA/EIA-422 (RS-422) – 120 ohms differential, even when unit is powered off
Dual-mode – Selectable between TTL (terminated 10 ohms to ground) and RS-422 (terminated 120 ohms differential)
Dual-mode – Selectable between TTL (terminated 75 ohms to ground) and RS-422 (terminated 120 ohms differential)
Tri-mode – Selectable between TTL (terminated 75 ohms to ground), TTL (terminated 10k ohms to ground), and RS-422 (terminated 120 ohms differential)
LVDS (Low Voltage Differential Signal)

Other Highlights

Many Output Power Options with Exceptional Efficiency
Outputs from 5 W to 10 W, per output, and optional variable power – all while drawing less current than the competition
Automatic Data Rate Tracking
As long as the external clock remains within the specified data rates above, the transmitter will automatically adjust to it with no programming or configuration required
Bypassable Randomizer
Standard IRIG-106 fifteen-stage randomizer, for applications with non-encrypted data
Intuitive Control
Straightforward configuration and control and platform-independence with serial terminal programming

Related Literature

Type	Title	Updated	Description
	TIMTER™ Dual Transmitter Manual	Jan-2020	Installation and operation of Quasonix’s TIMTER™ Multi- mode Dual Telemetry Transmitters.
	TIMTER™ Dual Transmitter Datasheet	Oct-2019	Features, popular options, and specifications for Quasonix’s dual telemetry transmitters.

Options

Available on Most Dual Transmitters

Space-Time Coding (STC)
Low Density Parity Check (LDPC) Error Correction System
Wide input voltage range
Clock generator output to baseband connector
Randomizer output to baseband connector
Dual power (two settings, “high” and “low”)
Variable power (32 discrete power level settings, spanning 24 dB)
Clock-free baseband interface
Frequency offset
High bit rate option increases maximum bit rate to 46 Mbps (23 Mbps for Tier 0)
Low bit rate option decreases minimum bit rate to 50 kbps (25 kbps for Tier 0)
Limited current in RF Off state
Modulation scaling
Hardware presets (PS2, PS4, PS8, or PS16)
Automatic carrier wave output
Adapter plate

Related Literature

Title	Updated	Description
Receiver and Transmitter Low-Density Parity Check Guide	Sep-2019	This technical guide introduces Low-Density Parity Check (LDPC) encoding, its uses and benefits, the Quasonix products it is available for, and considerations for optimal set-up and use.
Receiver and Transmitter Space-Time Coding Datasheet	Oct-2018	The Quasonix Space Time Coding Solution eliminates link outages caused by the “two-antenna problem,” improving behavior of received signal power and overall link availability.
Receiver and Transmitter Low-Density Parity Check Datasheet	Oct-2019	The Low Density Parity Check (LDPC) Forward Error Correction mode improves link margin equivalent to nearly tripling the operating distance on your telemetry link.
IRIG 106-13, Appendix N Interpretation	Apr-2019	Explains Quasonix’s standard transmitter protocol and how transmitters with the C7 option (IRIG 106-07 control protocol) will behave differently.

Accessories

Supporting Items

Image	Item	Description
	Adapter Plate for 2.5″ x 3.5″ Footprint	This adapter plate allows for the standard 2” x 3” TIMTER™ to be mounted to the larger 2.5” x 3.5” mounting surface occupied by other industry transmitters. Part Number: QSX-AP96
	MDM-15 RS-422 and TTL Wiring Harness	Female MDM-15 connector wiring harness with banana plugs for power and ground, BNC connectors for both RS-422 and TTL clock and data, and a DB-9 connector for serial control. Part Number: QSX-AC-MDM15-HARNESS-PIN-VR
	MDM-15 RS-422 Connector with Pigtails	Female MDM-15 connector with 36-inch pigtails. For RS-422 clock and data. Part Number: QSX-AC-MDM15-36-PIN
	MDM-15 RS-422 Wiring Harness	Female MDM-15 connector wiring harness with banana plugs for power and ground, BNC connectors for RS-422 clock and data, and a DB-9 connector for serial control. Part Number: QSX-AC-MDM15-HARNESS-PIN
	MDM-15 TTL Connector with Pigtails	Male MDM-15 connector with 36-inch pigtails. For TTL clock and data. Part Number: QSX-AC-MDM15-36-SOCK
	MDM-15 TTL Wiring Harness	Male MDM-15 connector wiring harness with banana plugs for power and ground, BNC connectors for TTL clock and data, and a DB-9 connector for serial control. Part Number: QSX-AC-MDM15-HARNESS-SOCK
	MDM-9 Female to MDM-9 Male Harness	MDM-9 Female to MDM-9 Male Harness, 18 inches. Part Number: QSX-AC-MDM9MF-HARNESS
	Ruggedized Handheld Programmer	The easiest way to remotely control transmitters and receivers without a bulky computer or monitor. Part Number: QSX-AC-HHPROG-1050-B
	Transmitter AC-Powered Heat Sink	Fan-cooled, AC-powered heat sink for transmitters. Used for testing at the bench; not airborne approved. Part Number: QSX-AC-32-HS-12V (formerly QSX-TIMTER-HS-12V).
	Transmitter Digital Frequency and Mode Switchbox	Transmitter digital frequency and mode switch box with MDM-9 connector allows configuration without the use of a computer. Part Number: QSX-AC-DSWBX
	Transmitter-Powered Heat Sink	Fan-cooled heat sink for 2″ x 3″ transmitters for airborne applications. Operates from 21 VDC to 34 VDC, powered from existing transmitter wiring. Part Number: QSX-AC-HS-28V-SP
	Transmitter-Powered Heat Sink Wiring Harness	External wiring harness for fan-cooled heat sink for 2″ x 3″ transmitters. For airborne applications. Part Number: QSX-AC-HARNESS-HEATSINK-TX
	USB to Serial Converter Cable	Allows for transmitter configuration using a computer that has a USB port but no serial ports. Part Number: QSX-AC-USBSER-CONV

Related Literature

Title	Updated	Description
Transmitter Handheld Programmer Datasheet	Oct-2019	Features of the ruggedized programmer, which is the easiest way to remotely control transmitters without a bulky computer or monitor.
Transmitter Heat Sinks Datasheet	Oct-2018	Quasonix offers different types of integrated and add-on heat sinks, as described in this datasheet. Please contact Quasonix for heat sink recommendations for your particular TIMTER™ transmitter.
Transmitter Handheld Programmer Manual (Gen 2)	Aug-2019	Operation of the 2nd Generation Quasonix Ruggedized Handheld Programmer, which is designed to facilitate setting up transmitters for operation.
Transmitter Switchbox Manual (Gen 2)	Aug-2019	How to set up and use the second-generation digital frequency and mode switchbox, released in 2018, for TIMTER™ transmitters.