Atec Aeroflex-IFR-3416 - Manual (Page 10)

on the LVDS connector. These can be used to synchronize to an exter-
nally applied clock.
INTERNAL IQ DATA OUT
16-bit IQ data is available on the LVDS interface when the modulation
is generated internally. Outputs can be disabled.
TONES
A tone (CW) only mode is available. Up to 2 tones may be selected.
Each tone may be independently enabled and disabled.
Frequency Range carrier frequency ± 10 MHz
Relative Level 60 dB
When differential I/Q outputs are enabled signal generator RF carrier
output is CW only.
Output Impedance
Can be used with single ended 50 loads or differential 100 loads.
Delivered bias voltages are halved with single ended loads.
I/Q Bias Voltages
Independent I and Q channel bias voltages settable within the range of
± 3 V
Bias Voltage
Resolution 1.0 mV nominal
Accuracy ± 2% ± 4 mV max, ± 1% ± 2 mV typical
Offset See Bias Voltage above.
Differential Offset Voltage
Range ± 300 mV
Resolution 100 µV nominal
Accuracy ± 2% ± 3.3 mV max, ± 1% ± 0.7 mV typical
Level Mode
Variable IQ signal level over 45 dB range
Differential Signal Balance
typ 0.15 dB @10 MHz
I/Q Channel Balance
± 0.2 dB @1 MHz
I/Q Level Imbalance Adjust
± 4 dB nominal continuously variable
I/Q Signal Amplitude
22.4 mV to 4 V pk-pk per channel
I/Q Signal Amplitude Accuracy
< 2% at 20 kHz, typ 1.5%, excludes termination errors
Baseband Purity (2 V p-p set voltage at 1 MHz)
2nd Harm -70 dBc
3rd Harm -65 dBc
IMD -70 dBc (100 kHz tone spacing, at 1 MHz)
Provides a digital sweep of RF frequency, RF level and Analog
Modulation Sources in discrete steps
Start, stop, step size, number and step time can be controlled. Step
time may be set from 2.5 ms to 10 s with 0.1 ms resolution. (20 ms
for mechanical attenuator Option 002)
The sweep can be set to be continuous, single or externally triggered
from the rear panel. TTL BNC Female rear panel.
Frequency Sweep
Linear step size: 1 Hz minimum step
Logarithmic: 0.01% to 50%, 0.01% step
Level Sweep
0.01 dB minimum step
Modulation Oscillator
0.1 Hz minimum frequency step
LIST MODE
Up to 500 frequencies and levels can be entered in the list. Start
address, stop address and dwell time can be controlled. Dwell time
can be set from 500 µs to 10 s. Requires Option 003 Electronic
Attenuator
This option requires Electronic Attenuator Option 003 to be fitted.
On/Off Ratio
> 80 dB for carrier levels -60 dBm
Rise/Fall Time
< 20 ns typical (10 to 90%)
Pulse Delay
Typically < 50 ns
RF Level Accuracy
The above specification is met for all power levels above 150 MHz.
AM Depth and Distortion
AM operation is unspecified below 10 MHz.
AM depth and distortion specification is degraded for operation above
0 dBm at carrier frequencies < 150 MHz.
Video Breakthrough
RF Mode
Power < ± 50 mV for RF levels > + 10 dBm
< ± 25 mV for RF levels in the range -10 dBm to + 10 dBm
< ± 10 mV for RF levels -10 dBm
Noise < ± 50 mV for RF levels > + 4 dBm
< ± 25 mV for RF levels in the range -16 dBm to + 4 dBm
< ± 10 mV for RF levels -16 dBm
ACP < ± 50 mV for RF levels > -6 dBm
< ± 25 mV for RF levels in the range -26 dBm to -6 dBm
< ± 10 mV for RF levels -26 dBm
Modulation Source
PULSE IN BNC (female) connector rear panel
Input Impedance
50
Input Level
TTL level (HCT)
Control Voltage
A HCT logic 0 (0 V to 0.8 V) turns the carrier OFF
A HCT logic 1 (2 V to 5 V) turns the carrier ON
Max. Safe Input Level
± 10 V
Full instrument configurations can be saved to 100 memory stores
(0 - 99).