Apex Digital HT-170 Especificações descarregar pdf (Página 60)

APEX™ Exciter Incorporating FLO™ Technology

Navigating the LCD Display Screens Details of the Exciter Status Screens

Page: 3-20 888-2604-001 03/08/07

WARNING: Disconnect primary power prior to servicing.

3.4.5.2 PLL Board Status Screen

PLLStatus.bmp

Figure 3-18 PLL Board Status Screen

The PLL Board screen is shown in Figure 3-18, with screen entries listed below.

• 15 Vdc: Input power from UDC interface board via connector J1.

• -15 Vdc: Input power from UDC interface board via connector J1.

• 8 Vdc: Input power from UDC interface board via connector J1.

• IF PLL Lock: (YES or NO) This PLL should normally be locked.

• RF PLL Lock: (YES or NO) This PLL should normally be locked.

• 10MHz PLL Lock: (N/A) The PLL board 10 MHz oscillator frequency is now refer-

enced to the external 1PPS GPS signal via the FPGA board and the PLL board DAC.

• 10 kHz. Reference: (N/A) This input is no longer used to lock the PLL board 10 MHz

oscillator.

• Board Rev: This is the board revision for the PLL board.

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Apex Digital HT-170 Especificações Página 60