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Keysight Technologies (Agilent HP) 8921A () Main Features and Specifications

Product Specs

  • Status Discontinued

The 8921A test set integrates 22 complete instruments in one box. It is designed to meet the communication test needs of both service and manufacturing, offering the functionality needed to test analog and digital (when used with an 83201A or 83201B cellular adapter) communications systems such as land mobile radios and dual-mode cellular phones. Some of the instruments in the test set, including those that may be optional, include:

  • Synthesized AM and FM signal generator
  • AM and FM modulation analyzer
  • Duplex offset generator
  • SSB demodulator
  • RF power meter
  • Audio and RF frequency counter and RF frequency error meter
  • AC and DC voltmeter
  • Distortion, SINAD, and signal-to-noise-ratio meters
  • Two variable audio sources
  • Oscilloscope
  • Spectrum analyzer and tracking generator
  • Signaling encoder and decoder
  • DC current meter

The test set can be part of an externally-controlled system or it can function as the controller for a system. IBASIC is built into the test set.

When a cellular adapter is attached to the top of the test set to form a test system, the test set acts as an RF source and analyzer for the cellular adapter, which modulates and demodulates the signal according to the format of the cellular system it simulates. The diagnostics for testing the cellular adapter (the top box) reside in the test set (the bottom box, the host controller); therefore, the test set must have firmware compatible with the cellular adapter.

  • Signal generator
    • RF frequency range: 250 kHz to 1 GHz
    • Output level range: -137 to -19 dBm, SWR: <1.5:1
    • Harmonics: <-30 dBc
    • Non-harmonics spurious: <-60 dBc
    • FM rate (1 kHz reference): Internal - DC to 25 kHz (1 dB BW), External, AC coupled - 20 Hz to 75 kHz (typical 3 dB BW), External, DC coupled - dc to 75 kHz (typical 3 dB BW)
  • Audio source
    • Frequency range: dc to 25 kHz, resolution: 0.1 Hz
    • Output level range: 0.1 mV to 4 Vrms
    • Maximum output current: 20 mA peak
    • Output impedance: <1 Ω at 1 kHz
  • RF analyzer
    • RF power measurement frequency range: 400 kHz to 1 GHz
    • RF power measurement range: 1 mW to 60 W continuous, 100 W for 10 seconds/minute
    • RF frequency measurement range: 400 kHz to 1 GHz
    • RF frequency measurement level range: 1 mW to 60 W continuous, 100 W for 10 seconds/minute
    • FM measurement frequency range: 5 MHz to 1 GHz (usable to 400 kHz)
    • FM measurement bandwidth: 2 Hz to 70 kHz (3 dB)
    • Residual FM and noise: <7 Hz (0.3 to 3 kHz, rms)
  • AF analyzer
    • Frequency measurement range: 20 Hz to 400 kHz
    • AC voltage measurement range: 0 to 30 Vrms
    • 3 dB bandwidth: 2 Hz to 100 kHz typical
    • Nominal input impedance: Switchable between 1 MΩ in parallel with 95 pF, and 600 Ω floating
    • DC voltage range: 100 mV to 42 V
    • DC offset: ±45 mV
    • Distortion measurement fundamental frequency: 1 kHz ±5 Hz
    • Distortion measurement input level range: 30 mV to 30 Vrms
    • SINAD measurement fundamental frequency: 1 kHz ±5 Hz
    • SINAD measurement input level range: 30 mV to 30 Vrms
    • SINAD measurement display range: 0 to 60 dB
  • Oscilloscope
    • Frequency range: 2 Hz to 50 kHz (3 dB)
    • Scale/division: 10 mV to 10 V
    • Time/division: 1 µs to 200 ms
    • 3 dB bandwidth: >100 kHz typical
  • Spectrum analyzer
    • Frequency range: 400 kHz to 1 GHz
    • Display range: 80 dB
    • Reference level range: +50 to -50 dBm
    • Residual responses: <-70 dBm (no input signal, 0 dB attenuation)
    • Image rejection: >50 dB
    • Non-harmonic spurious responses: >70 dB (for input signals ≤-30 dBm)
    • Displayed average noise level: <-114 dBm (≤50 kHz spans)
    • Peak hold, marker with frequency and level readout, marker to peak, marker to next, comparison A-B, adjacent-channel power
    • Tracking generator: Frequency range is 400 kHz to 1 GHz, Sweep modes are normal and inverted
  • Signaling formats: CDCSS, DTMF, 1 TONE, 2 TONE, 5/6 TONE SEQUENTIAL, RPC1, POCSAG, EIA, CCITT, CCIR, ZVEI, DZVEI, GOLAY, EEA, AMPS/EAMPS/NAMPS, TACS/ETACS, JTACS/NTACS, NMT-450, NMT-900, LTR®, EDACS™, MPT 1327, and TDMA dual-mode
  • DC current meter measurement range: 0 to 10 A (usable to 20 A)
  • Remote programming
    • HP-IB functions: SH1, AH1, T6, L4, SR1, RL1, LE0, TE0, PP0, DC1, DT1, C4, C11, E2
    • RS-232: Six-wire RJ-11 connector provides two three-wire serial ports for serial data in and out (no hardware handshake capability)
    • Baud rates: 300, 600, 1200, 2400, 4800, 9600, and 19200 Hz selectable
    • Parallel (Centronics) connector: A standard 25-pin, sub-min D female connector with right-angle adapter is included