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The SCITTS is a modern solid-state bench top power source that produces the same type and shape of RF pulses as the aircraft's RF transmitter for IFF and TACAN.

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IFF and TACAN Test Set Calibration Source 2770

Overview

Field Alignment Option
High and Low Power Amplitude
Pulse Shaping Control
Portable Package
Variable Replacement for Vacuum Equipment
Delivers Reliability and Product Longevity

Military Aircraft technicians use various Test Sets to check and certify proper operation of the aircrafts TACAN and IFF pulsed RF transmitters. To Avoid errant aircraft transmitter operation these Test Sets must be calibrated with high accuracy stable source of properly shaped RF pulses. The UBS' SCITTS Calibration Source provides military aircraft service technicians with such capabilities.

Specifications

Frequency Range	960-1215 MHz (TACAN) 1024 to 1036 and 1084 to 1096 MHz (IFF)
RF Output Connectors	Type “N” Female (high power port has interlock protection
High Power Port Duty Cycle	0.002 maximum automatically enforced (limits some of the combinations of widths, repetition frequencies, and number of pulses per group that, individually, are within spec).
Pulse Width (specified @ 50% voltage amplitude)	Variable from 0.20 to 1.3 ± 0.025 µsec (IFF) ; 3.5 ± 0.5 µsec (TACAN)
Pulses per Group Pulse Spacing	2 or 4 (IFF); 1 or 2 (TACAN) with variable spacing
	IFF 2 Pulse:	1.3 to 23 msec ±0.025 msec in 0.05 msec steps
	IFF 4 Pulse: (high power only)	P2: 1.5 to 2.5 µsec ±0.025 in 0.05 µsec steps P3: 3.5 to 4.5 µsec P4: 5.5 to 6.5 µsec
	TACAN: (high power only)	8 to 50 msec ± 0.1 msec to 0.5 msec steps
Frequency Control	Selectable with 0.1 MHz resolution, accurate to ± 50 kHz
Pulse Group Repetition Rate	Variable from 5 to 200 pps (TACAN); 25 to 1000 pps (IFF)
Synch Out	A synch output pulse of +4 V into 50 ohms coincident with the start of each pulse group is provided for synchronizing external equipment. The pulse width is 1.5 msec. A delay of up to 100 msec between the synch out signal and the pulse group can be set in 0.1 msec increments. Synch out pulse is present in both internal and external synch modes.
External Synch	The 2770 normally operates in internal synch mode. However, operation from an external synch input is accommodated. The external synch requires a 1 to 30 volt pulse of 0.3 to 25 msec in width. Duty cycle limiting in external synch mode is automatic.
Video Monitor	A video monitor signal proportional to the RF level at the low power output is provided. The amplitude is 1 Vpp ± 15% for a low power output of +20 dBm.

*Specifications are subject to change without notice