Dimensions | 13.19" L x 8.35" W x 5.12" H (281-U, 291-U); 13.19" L x 13.78" W x 5.12" H (282-U, 292-U, 284-U, 294-U) |
Weight | 9 lbs (281-U, 291-U); 16 lbs (282-U, 292-U, 284-U, 294-U) |
Display | 20 character x 4 row alphanumeric LCD |
Data Entry | Keyboard selection of mode, waveform etc.; value entry direct by numeric keys or by rotary control |
Stored Settings | Up to 9 complete instrument setups from battery-backed memory; Up to 100 arbitrary waveforms |
Power | 230 V, 115 V or 100 V nominal 50/60 Hz, adjustable internally |
Operating Range | 41 °F to 104 °F, 20-80% RH (+5 °C to 40 °C) |
Storage Range | -4 °F to 140 °F (-20 °C to + 60 °C) |
Warranty | 3-year |
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Output Impedance | 50 Ohms |
Amplitude | 5 mV to 20 Vpp open circuit (280 Series); 5 mV to 20 pk-pk open circuit (290 Series) |
Accuracy | 2 % ± 1 mV at 1 kHz into 50 O (280 Series); Better than 2 % ± 1 mV at 1 kHz into 50 O (290 Series) |
Flatness | ± 0.2 dB to 200 kHz; ± 1 dB to 10 MHz; ± 2.5 dB to 16 MHz (280 Series); ± 0.2 dB to 1 MHz; ± 0.4 dB to 40 MHz (290 Series) |
Pulse Aberrations | N/A |
DC Offset | Yes |
Resolution | 3 digits or 1 mV for both Amplitude and DC Offset |
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Amplitude Modulation Carrier Frequency | N/A |
Amplitude Modulation Carrier Waveforms | All standard and arbitrary waveforms |
Amplitude Modulation Depth | 0 % to 105 % |
Amplitude Modulation Internal Source | 0.005 Hz to 100 kHz square wave adjustable in 10 us steps (Trigger Generator Only) |
Amplitude Modulation External | VCA: Approximately 1 V pk-pk for 100 % level change at maximum output |
Frequency Shift Keying (FSK) Carrier Frequency | N/A |
Frequency Shift Keying (FSK) Carrier Waveforms | N/A |
Frequency Shift Keying (FSK) Switch Repetition Rate | N/A |
Frequency Shift Keying (FSK) Switching Signal Source | N/A |
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Trigger/Burst Carrier Frequency | 1 MHz or the maximum for the selected waveform (280 Series); smaller of 2.5 MHz or the maximum for the selected waveform (290 Series) |
Trigger/Burst Carrier Waveforms | All standard and arbitrary |
Trigger/Burst Number of Cycles | 1 to 1,048,575 |
Trigger/Burst Trigger Rep. Rate | 0.005 Hz to 100 kHz internal dc to 1 MHz externa |
Trigger/Burst Source | Internal from keyboard, previous channel, next channel or trigger generator. External from TRIG IN or remote interface |
Gated Carrier Frequency | 1 MHz or the maximum for the selected waveform (280 Series); smaller of 2.5 MHz or the maximum for the selected waveform (290 Series) |
Gated Carrier Waveforms | All standard and arbitrary |
Gated Trigger Rep. Rate | 0.005 Hz to 100 kHz internal dc to 1 MHz external |
Gate Source | Internal from keyboard, previous channel, next channel or trigger generator. External from TRIG IN or remote interface. |
Sweep Carrier Waveforms | All standard and arbitrary except pulse, pulse train and sequence |
Sweep Mode | Linear or logarithmic, triggered or continuous (280 Series); Linear or logarithmic, continuous or triggered (290 Series) |
Sweep Width | N/A |
Sweep Time | 30 ms to 999 s (280 Series); 1 ms to 999 s (290 Series) |
Sweep Markers | Variable during sweep |
Sweep Trigger Source | Manually from keyboard, Externally from TRIG IN input or remote interface |
Hop | N/A |
Start/Stop Phase Carrier Frequency | Subject to waveform frequency and type |
Start/Stop Phase Carrier Waveforms | N/A |
Start/Stop Phase Range | N/A |
Start/Stop Phase Resolution | 0.1 ° resolution |
Start/Stop Phase Accuracy | N/A |
Trigger Generator | Internal source 0.005 Hz to 100 kHz squarewave adjustable in 10 us steps |
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Aux Out | N/A |
Trig/Sweep Out | N/A |
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Ext Trig Frequency Range | N/A |
Ext Trig Signal Range | N/A |
Ext Trig Min. Pulse Width | N/A |
VCA In Frequency Range | DC to 100 kHz (280 Series) DC to 500 kHz (290 Series) |
VCA In Signal Range | Approximately 1 V pk-pk for 100 % level change at maximum output |
VCA In Input Impedance | Typically 1 kiloOhms |
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Clock In/Out | Input for an external 10 MHz reference clock |
Sync Out | Multifunction output user definable |
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RS-232 | Variable Baud rate, 9600 Baud maximum |
IEEE-488 | Conforms with IEEE488.1 and IEEE488.2 (280 Series); Conforms with IEEE488.2 (290 Series) |
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