CMC 356 Reference Manual566.3.6 Low-Level Binary Outputs ("ext. Interf.")The SELV interface connector "ext. Interf." holds four additional transistorbinary outputs (Bin. out 11 - 14). Unlike regular relay outputs,Bin. out 11 - 14 are bounce-free binary outputs (small signals) and have aminimal reaction time.In addition, two high frequency counter inputs for up to 100 kHz areavailable for the testing of energy meters. They are described in section6.4.2, "Counter Inputs 100 kHz (Low Level)" on page 63.Figure 6-10:Pin assignment of "ext.Interf." (upper 16-poleLemo socket); view ontothe connector from thecable wiring sideTable 6-12:Data of the low-levelbinary outputs 11 - 14Pin FunctionPin 1 Counter input 1Pin 2 Counter input 2Pin 3 ReservedPin 4 Neutral (N) connected to GNDPin 5 Binary output 11Pin 6 Binary output 12Pin 7 Binary output 13Pin 8 Binary output 14Pin 9 ReservedHousing Screen connection4 Low-Level Transistor Binary Outputs (Bin. out 11 - 14)Type Open-collector transistor outputs;external pull-up resistorSwitching voltage Max. 15 VMax. input voltage ±16 VSwitch current Max. 5 mA (current limited); min. 100 μ AActualization time 100 μ sRise time < 3 μ s (Vextern = 5 V, R pullup = 4.7 kΩ)Connection Connector "ext. Interf." (CMC 356 rear side)Insulation Reinforced insulation to all other potentialgroups of the test equipment. GND isconnected to protective earth (PE).
