Agilent Technologies E8257D PSG, E8267D PSG manual Data, Input

Signal Generator Overview

Front Panel

•When the SYMBOL SYNC itself is used as the (symbol) clock, the CMOS falling edge is used to clock the DATA signal.

On signal generators with Option 1EM, this connector is located on the rear panel.

34. DATA CLOCK

This female BNC input connector is CMOS compatible and accepts an externally supplied data- clock input signal to synchronize serial data for use with the internal baseband generator (Option 601/602). The expected input is a 3.3 V CMOS bit clock signal (which is also TTL compatible) where the rising edge is aligned with the beginning data bit. The falling edge is used to clock the DATA and SYMBOL SYNC signals. The maximum clock rate is 50 MHz. The damage levels are > +5.5 V and < −0.5V. The nominal input impedance is not definable. On signal generators with Option 1EM, this connector is located on the rear panel.

35. DATA

This female BNC input connector (Options 601/602 only) is CMOS compatible and accepts an externally supplied serial data input for digital modulation applications. The expected input is a 3.3 V CMOS signal (which is also TTL compatible) where a CMOS high = a data 1 and a CMOS low = a data

0.The maximum input data rate is 50 Mb/s. The data must be valid on the falling edges of the data

clock (normal mode) or the on the falling edges of the symbol sync (symbol mode). The damage levels are > +5.5 and < −0.5V. The nominal input impedance is not definable. On signal generators with Option 1EM, this connector is located on the rear panel.

36. Q Input

This female BNC input connector (E8267D only) accepts the quadrature- phase (Q) component of an externally supplied, analog, I/Q modulation. The in- phase (I) component is supplied through the I

INPUT. The signal level is = 0.5 Vrms for a calibrated output level. The nominal input impedance is 50 or 600 ohms. The damage level is 1 Vrms and 10 Vpeak. To activate signals applied to

the I and Q input connectors, press Mux > I/Q Source 1 or Ext 600 Ohm. On signal generators with Option 1EM, these

I/Q Source 2 and then select either Ext 50 Ohm or connectors are located on the rear panel.

37. I Input

This female BNC input connector (E8267D only) accepts the in- phase (I) component of an externally supplied, analog, I/Q modulation. The quadrature- phase (Q) component is supplied through the Q

INPUT. The signal level is = 0.5 Vrms for a calibrated output level. The nominal input impedance is 50 or 600 ohms. The damage level is 1 Vrms and 10 Vpeak. To activate signals applied to

the I and Q input connectors, press Mux > I/Q Source 1 or Ext 600 Ohm. On signal generators with Option 1EM, these

I/Q Source 2 and then select either Ext 50 Ohm or connectors are located on the rear panel.

Chapter 1 13