Motorola ASTRO Digital Spectra - ASTRO Spectra Plus Standard Bias Table; Table 4-6. ASTRO Spectra Plus Standard Operating Bias

September 5, 2008 6881076C25-E
4-12 Troubleshooting Procedures: ASTRO Spectra Plus Procedures
4.2.3 ASTRO Spectra Plus Standard Bias Table
Table 4-6 outlines some standard supply voltages and system clocks which should be present under
normal operation. These should be checked as a first step to any troubleshooting procedure.
Table 4-6. ASTRO Spectra Plus Standard Operating Bias
Signal Name
Nominal
Value
Tolerance Probe Point
SINE32K 32.768 kHz +/- 400 ppm R428
CKIH 16.8 MHz C326
16_8MHz 16.8 MHz TP401
POR 3.0 V +/- 5% J501-29
RESET_OUT 3.0 V +/- 5% J501
VCC1.8 1.80 Vdc +/- 5% R419
VCC3.0 3.0 Vdc +/- 5% R420
SW_B+ 13.8 Vdc 11.0-16.6 Vdc J501-35
VCC5 5.0 V +/- 10% J501-34