Motorola SSETM 5000 service manual Transmitter Performance Checks

Performance Checks: Transmitter Performance Checks 4-7

4.4Transmitter Performance Checks

The following table outlines the performance checks for the transmitter.

Table 4-6. Transmitter Performance Checks

Test Name	System Analyzer	Radio	Test Set	Comments
Reference	RF Control: Monitor	TEST MODE CSQ	PTT to continuous	UHF R2 (450–488 MHz):
Frequency	Meter: RF Display	channel*	(during the	2.5 ppm
	Display: Bar Graphs		performance
	Freq: Selected radio TX		check).
	freq.
RF Power	As above	As above	As above	UHF R2 (450–488 MHz):
				2–5 Watts
Voice	As above. Set fixed 1 kHz	As above	As above	Deviation:
Modulation	audio level to 400 mV.			(12.5 kHz) ≥ 2.1 kHz, but
(external)				≤ 2.5 kHz
				(25 kHz) ≥ 4.1 kHz, but
				≤ 5.0 kHz
Voice	RF Control: Monitor	As above	Remove	Press PTT button on radio.
Modulation	Meter: RF Display		modulation input.	Say “four” loudly into the
(internal)	Display: Bar Graphs		PTT to OFF	radio mic. Measure
	Freq: Selected radio TX		(center)	deviation:
	freq.			(12.5 kHz) ≥ 2.1 kHz but
				≤ 2.5 kHz
				(25 kHz) ≥ 4.1 kHz but
				≤ 5.0 kHz
PL Modulation	As above	Conventional	PTT to continuous	Deviation:
(radios with		coded squelch	(during the	(12.5 kHz) ≥ 375 Hz but
clear mode,		personality (clear	performance	≤ 500 Hz
coded squelch		mode operation)	check)	(25 kHz) ≥ 500 Hz but
operation only)		or TPL channel		≤ 1000 Hz
		(test mode*)
Secure	As above	Programmed	As above	Deviation:
Modulation		conventional		≥ 3.7 kHz but ≤ 4.3 kHz
(radios with		channel (secure
secure mode,		mode operation)
talkaround		Load key into
operation only)		radio.

*See Table 4-4 on page 4-4.

6881094C12-A November 11, 2004