Provides the amplitude modulation waveform from the internal LF generator. Enabled with Option 0027. BNC type, rear panel
HORIZ OUT
Provides 0 V at beginning and +10 V at end of sweep, regardless of sweep width. In CW mode, the voltage is proportional to frequency between 0 V at low end and +10 V at the high end of the range. In CW mode, if CW RAMP is enabled, a repetitive, 0 V to +10 V ramp is provided. BNC type, rear panel
PULSE OUT
Provides a video modulating signal from the internal pulse generator. Enabled with Option 0027. BNC type, rear panel
FM OUT
Provides the frequency or phase modulation waveform from the internal LF generator. Enabled withOption 0027. BNC type, rear panel.
EXT TRIG
Accepts a TTL low-level signal of 1 μs width to trigger a sweep.
PULSE SYNC
Provides a TTL compatible signal, synchronized to the internal pulse modulation output. Enabled with Option 0026. BNC type, rear panel
LOCKED/LEVELED
TTL high/low output signal when in internal ALC mode that is a logical AND of frequency locked condition and output leveled condition. When in Fixed Gain mode this signal indicates only frequency locked/unlocked condition.
PPS
1PPS input/output from either GNSS/GPS atomic clock receiver or internal rubidium reference option. 3.3V CMOS I/O
FM IN
Accepts an external signal to frequency or phase modulate the RF output signal. Enabled with Option 0012. 50 Ω impedance. BNC type, rear panel.
EXT ALC
Provides for leveling the RF output signal externally with either a detector or power meter. Signal requirements are shown in the RF Output specifications. BNC type, rear panel
EFC
±4 VDC 30 Hz bandwidth in wide reference PLL mode 1 MΩ input impedance. Provides the capability to frequency modulate the internal crystal oscillator, allowing phase locking of the synthesizer inside an external lock loop. BNC type, rear panel
AM IN
Accepts an external signal to amplitude modulate the RF output signal. Enabled with Option 0012. 50 Ω impedance. BNC type, rear panel.
10 MHZ REF IN
Accepts an external 10 MHz ± 3 Hz, 0 dBm to +10 dBm (20 dBm no-damage level) time-base signal. Automatically disconnects the internal high-stability time-base option, if connected. 50 Ω impedance BNC type, rear panel
10 MHZ REF OUT
Provides a 10 dBm, AC coupled, signal derived from the internal frequency standard. 50 Ω impedance BNC type, rear panel
PULSE IN
Accepts an external TTL compatible signal to pulse modulate the RF output signal or to trigger or to gate the optional internal pulse generator. Enabled with Option 0026. BNC type, rear panel
100 MHZ REF IN
Accepts an external 100 MHz ± 200 Hz or 2 ppm 12 ± 1 dBm (20 dBm no-damage level) reference signal. Enabled with Option 0003 or 0013. Automatically disconnects the internal high-stability time-base option, if connected. 50 Ω impedance BNC type, rear panel
100 MHZ REF OUT
Provides a 12 dBm, AC coupled, 100 MHz signal derived from the internal frequency standard. Enabled with Option 0003 or 0013. 50 Ω impedance BNC type, rear panel
1600 MHZ REF IN
Accepts an external 1600 MHz ± 3.2 kHz or 2 ppm, 4 ± 1 dBm (20 dBm no-damage level) reference signal. Enabled with Option 0003 or 0013. Automatically disconnects the internal high-stability time-base option, if connected. 50 Ω impedance SMA type, rear panel
1600 MHZ OUT
Provides a 5 dBm, AC coupled, 1600 MHz signal derived from the internal frequency standard. Enabled with Option 0003 or 0013. 50 Ω impedance SMA type, rear panel
