Agilent HP 8782B at Metrictest.com

The Agilent 8782B vector signal generator is designed to test digital microwave and RF receivers. It is a 1 MHz to 250 MHz synthesized signal generator with a wide range of digital modulations, as well as vector (analog I and Q), pulse and scalar (AM) modulation. A vector (I/Q) modulator is built-in. The analog I (In-phase) and Q (Quadrature-phase) inputs allow for arbitrary phase and magnitude modulation while digitally-coded information can be applied to the digital inputs either in parallel or serial. The Agilent 8782B has a built-in pseudo random bit sequence (PRBS) generator making digital modulation from BPSK to 256QAM possible without using external digital data sources. The Agilent 11846B pi/4 DQPSK I-Q generator can also be used to drive the analog I and Q inputs for testing North American dual mode digital cellular radio receivers. 50 MHz analog I and Q inputs , typically DC to 100 MHz, drive the vector modulator directly to control the magnitude and phase of the generator output. This allows you to generate arbitrary magnitude and phase modulation with bandwidths up to 100 MHz.

Ranges: 1 MHz to 250 MHz 1 MHz to 350 MHz (typical)
Resolution: 1 Hz
Accuracy and Stability: Same as reference oscillator
Frequency Switching Time: < 170 ms (typical)
Internal Reference Oscillator Aging Rate: Less than 1.5 x 10e-9 per day after 10 day warm-up for internal reference. (Typically less than 1.5 x 10e-9 per day after 24 hour warm-up in normal operating environment) Temperature Effects: Typically less than 1 x 10e-7/°C Line Voltage Effects: Typically less than 1 x 10e-8/°C

Digital Modulation Burst and scalar modulations are available with all digital modulations. Modulation Types: BPSK, QPSK, 8PSK, 16QAM, 64QAM, 256AM, 9PRS, 25PRS, 49PRS, 81PRS State dc Accuracy: ±1% of full scale I/Q value at 70 MHz carrier (Typically ±2% of full scale I and Q values following calibration at 25°C and < 5°C temp change) Data and Clock Inputs Clock Modes: Single, separate I and Q, asynchronous Parallel Data Rates: 0 to 100 MHz clocked 0 to 50 MHz asynchronous Serial Data Rates: 0 to 200 MHz clock and data lines with drive signal rise time < 1.0 µS Data Set Up and Hold Time: Minimum 2.5 ns (typical) Threshold ECL Termination: -1.3V (typical) TTL or Grounded Termination: Adjustable -2.5V to +2.5V (typical) Input Impedance: 50 ohms, nominal Spectrum Filters: Internal baseband spectrum-limiting filters with a nominal bandwidth of 74 MHz limit aliasing. User-supplied baseband filters may be connected at the rear panel connectors and switched by front panel control into the baseband signal path in place of the internal filters. External filters must have 50 ohm nominal impedance and a maximum passband loss of 3 dB for proper operation. The Agilent 8782B calibration will properly calibrate for external filter loss provided the external filter passband extends to dc and the maximum passband loss is 3 dB. For ac coupled filters, a loss factor between 0 and 3 dB may be entered manually. PRBS Internal 2e23-1 Pseudo Random Binary Sequence Generator Internal Clock Rates: 1.125, 2.5, 5 and 10 MHz External Clock Rates: Up to 100 MHz Up to 200 MHz (typical) Digital Modulation Impairments I/Q Ratio: From +40 dB to -10 dB (typical) Quadrature Adjustment: 80° to 100° ±0.2° accuracy Carrier Leakage: < -10 dB carrier leakage angle ±360° (typical) Phase Rotation (relative to coherent carrier): ±30° (typical)
Pulse (Burst) Modulation Burst Rates: 0 to 50 MHz Burst Data Input Thresholds ECL Termination: -1.3V (typical) TTL or Ground Termination: Adjustable from -2.5V to +2.5V (typical) Burst dc On/Off Ratio: 50 dB at 70 MHz carrier. (Typically 40 dB following calibration at 25°C and < 5°C temp change from 1 to 250 MHz> Burst Rise/Fall Time: < 2.2 ns (typical)
AM/Scalar Modulation Scalar dc Accuracy (at 70 MHz carrier): < 1% of full scale input for 0-10 dB of attenuation. Typically 1.5% of full scale input for 0-10 dB of attenuation following calibration at 25°C and < 5°C temperature drift < 2% for 10 dB to 20 dB of attenuation Typically < 2% at all carrier frequencies Sensitivity: 0 to +1V for 0 to full scale output power Frequency Response: dc to 50 kHz at 70 MHz carrier frequency Scalar Residual: < 1% of full scale I/Q at 70 MHz carrier
Vector Modulation (using analog I and Q inputs) Frequency Response: dc to 50 MHz (1 dB) at 140 MHz carrier frequency dc to 100 MHz (1 dB) (typical) Vector dc Accuracy: at 140 MHz: 1.5% of full scale vector inputs (Typically 2% following calibration at 25°C and < 5°C temperature drift) Vector dc Residual: at 140 MHz: 1% of full scale vector inputs (Typically 1.3% following calibration at25°C and < 5°C temperature change) Sensitivity: ±0.5V into 50 ohms with 50 ohm source impedance for ±100% of full scale magnitude Input Impedance: 50 ohm nominal SWR: < 1.5:1, dc to 50 MHz Vector Modulation Impairments Quadrature Adjustment:80° to 100° ±0.2° accuracy

Agilent HP 8782B Vector Signal Generator, 1 MHz to 250 MHz

Agilent HP 8782B Vector Signal Generator, 1 MHz to 250 MHz