Agilent E8663B Analog Signal Generator User’s Guide
17
Signal Generator Overview
Rear Panel
1. Source Module Interface
Inactive.
2. 1 GHz Output
This female BNC connector provides a 1 GHz low noise frequency reference output signal.
3. AC Power Receptacle
The ac line voltage is connected here. The power cord receptacle accepts a three- pronged power cable
that is shipped with the signal generator.
4. GPIB
This GPIB interface allows listen and talk capability with compatible IEEE 488.2 devices.
5. 10 MHz EFC
This female BNC input connector accepts an external dc voltage, ranging from
−
5 V to +5 V, for
electronic frequency control (EFC) of the internal 10 MHz reference oscillator. This voltage inversely
tunes the oscillator about its center frequency approximately
−
0.0025 ppm/V. The nominal input
impedance is greater than 1 Mohms. When not in use, this connector should be shorted using the
supplied shorting cap to assure a stable operating frequency.
6. 10 MHz IN
This female BNC connector accepts an external timebase reference input signal level of >
−
3 dBm.
The reference must be 1, 2, 2.5, 5, or 10 MHz, within
±
1 ppm. The signal generator detects when a
valid reference signal is present at this connector and automatically switches from internal to
external reference operation.
The nominal input impedance is 50 ohms with a damage level of
≥
10 dBm.
7. AUXILIARY INTERFACE
This 9- pin D- subminiature female connector is an RS- 232 serial port that can be used for serial
communication and Master/Slave source synchronization.
Table 1-2
Auxiliary Interface Connector
Pin Number
Signal Description
Signal Name
1
No Connection (default operation)/
Retrace (Master/Slave operation)
2
Receive Data
RECV
3
Transmit Data
XMIT
4
+5V (Default operation)/
Sweep Stop (Master/Slave operation)
