DH Instruments PPC2 AF - Power Supplies; Micro Card

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1. INTRODUCTION

1.2.3 POWER SUPPLIES

Internal Layout

PPC2 AF has two independent power supplies.

1. + 12 V DC (± 2 %) @ 3.3 Amps: for internal and external valve execution.

2. + 5 V DC (± 2 %) @ 3.0 Amps; + 15 V DC (± 10 % / - 3 %) @ 2.0 Amps; - 15 V DC

(± 5 %) @ 0.35 Amps: for the supply of the micro board and driver board electronics.

1.2.4 MICRO CARD

Internal Layout

The micro card supports a Motorola 68302 microcontroller; EPROM, EEPROM, NVRAM and

flash memories; RS-232 communications; the front panel keypad and display control; and a

two channel frequency counter for reading reference pressure transducers. An I/O port

controls other boards and devices in PPC2 AF.