Meinberg FDM509 - Manual (Page 16)

16
Rear Connector Pin Descriptions
Signal Name Pin Description
VCC in (+5V) B, D+Z2 +5V supply voltage
GND B, D+Z16 power supply ground
/Reset Z4 Reset and Boot signal for starting bootstrap loader
(pull down while powering-up)
signal is parallel wired to push button "Reset"
P_SEC in D6 pulse per second input, TTL level, active high
10 MHz in Z12 10 MHz oscillator clock input, TTL-Pegel
COM0 TxD out D8 COM0 RS232 transmit data output
COM0 RxD in B8 COM0 RS232 receive data input
COM0 GND Z6 COM0 ground (=power supply ground)
COM1 TxD out D10 COM1 RS232 transmit data output
COM1 RxD in B10 COM1 RS232 receive data input
COM1 GND B12 COM1 ground (=power supply ground)
A1 out B4 analog output no. 1
A2 out B6 analog output no. 2
A_out GND D4 analog output ground (=power supply ground)
SDA D14 reserved for extensions
SCL Z14 reserved for extensions
SCL_EN B14 reserved for extensions
Fail out Z8 fail output (Fail LED), TTL level
Overflow out D12 overflow output (Overflow LED), TTL level
Reserve in Z10 input, reserved for extensions
L1 Z28 L, mains voltage
N D30 N, mains voltage
PE Z32 PE, protective earth conductor