* Universal Counter- 8 Digit Display with Functionary Indication- Input Channel CH A and B : 5Hz to 100MHz CH C : 100MHz to 1.5Hz/2.8GHz- Arithmetic Mode- Frequency, Period, A+B, A-B, A/B, A¡æB and TOT- ATT-A, ATT-B, CHAN, GATE, HOLD- RS232C PC Interface* DC Regulated Power Supply- Output Voltage 5V/1A Fixed (Linear type) 15V/1A Fixed (Linear type)- Power Requirements : 110/120V or 220/240V AC at 50/60Hz- Dimension(W*H*D) : 213 * 80 * 260mm- Input frequency Range Channel A and B : 5Hz to 100MHz Channel C(1.5GHz) : 100MHz to 1.5GHz Channel C(2.8GHz) : 1.3GHz to 2.8GHz- Input Sensivivity Voltage Channel A,B and C : 70mV RMS Sinewave or 100mVp- Maximum Input Voltage Channel A and B : 250Vpp C : 3Vpp- Input Impedence Channel A,B : 1 M§Ù Channel C : 50§Ù- Attenuator Channel A,B only : 1 or 1/10 (-20dB)- Time Base Channel A,B and C : Switch Selectable