2–8 FM1000A User’s Manual
Remote I/O Connector Pinout Table
Pin # Function
1 PA#8 Current Monitor (a buffered metering output with 1 V = 2 A)
2 PA#7 Current Monitor (a buffered metering output with 1 V = 2 A)
3 Ground
4 Remote RAISE Po wer (a momentary switch, on this pin, when held lo w will
raise the po wer lev el 10 w atts every 0.5 seconds)
5 Remote RF Po wer Control (a resistor to g round on this pin reduces RF
pow er output le vel belo w internal limits. See Section 2.6, page 2–7)
6 Ground
7 Remote A C Po w er On (a latching s witch, on this pin, when held lo w will turn
the A C po w er supply on)
8 Fault Summary (the voltage from this pin goes to +5 V if any fault occurs and
drops below 2V when the fault goes aw a y)
9 Ground
10 ALC (the voltage from this pin is a direct reading of automatic lev el control
voltage , not b uffered)
11 PA Temper ature (a buffered metering output with 1 V = 20° C)
12 SWR (a buffered metering output with a calculated reading of standing wa ve
ratio in VDC)
13 RF Output P o w er (a buff ered metering output with a calculated reading of
output pow er of 1 V = 1000 W)
14 Input P o w er Ref erence (a buffered metering output with a DC voltage
representing input pow er)
15 Remote LO WER Po wer (a momentary switch, on this pin, when held lo w will
low er the po wer le vel 10 watts every 0.5 seconds)
16 PA#6 Current Monitor (a b uff ered metering output with 1 V = 2 A)
17 PA#5 Current Monitor (a b uff ered metering output with 1 V = 2 A)
18 Ground
19 PA#4 Current Monitor (a b uff ered metering output with 1 V = 2 A)
20 PA#3 Current Monitor (a b uff ered metering output with 1 V = 2 A)
21 Ground
22 PA#2 Current Monitor (a b uff ered metering output with 1 V = 2 A)
23 PA#1 Current Monitor (a b uff ered metering output with 1 V = 2 A)
24 PA Total Current Monitor (a b uff ered metering output with 1 V = 20 A)
25 PA Volts (a buffered metering output with 1 V = 10 V)
Note: PA = Power Amplifier