Operating manual here :

https://www.manualslib.com/manual/529229/Hp-4195a.html

Operation and Service manual (115 pages) here :

https://pearl-hifi.com/06_Lit_Archive/15_Mfrs_Publications/20_HP_Agilent/HP_4192A_5Hz-13MHz_Z_Analyzer/HP_4192A_Operation.pdf

HP or Agilent 4192A LF Impedance Analyzer, 5 Hz to 13 MHz
The 4192A RF impedance analyzer performs both network analysis and impedance analysis on a wide range of electronic components.

The HP Model 4192A LF Impedance Analyzer is a fully automatic, high performance test instrument designed to measure a wide range of impedance parameters as well as gain, phase, and group delay. The 4192A improves efficiency and quality in the development and production of many types of complex components, semiconductors, and materials. Complete network analysis of devices such as filters, crystals and audio/video equipment, plus evaluation of the impedance characteristics of their circuit components, can be performed.
These tests can be performed using test signals equivalent to those found under actual operating conditions. The two measurement display sections, DISPLAY A and DISPLAY B, provide direct readout of the selected measurement parameters with 4V2 digit resolution along with the appropriate units. In NORMAL mode operation, the 4192A performs approximately five measurements persecond. The 41 92A also provides an AVERAGE measurement.

Specifications :

INTERNAL SYNTHESIZER: Output from OSC OUTPUT (HCUR) terminal

Frequency Range:  5.000Hz to 1 3.000000MHz
Frequency Resolution:  1 mHz (5Hz to 1 0kHz), 1 OmHz ( 1 0kHz t6 1 00kHz), 1 00mHz (100kHz to 1 MHz), 1 Hz (lMHz to 13MHz)
Frequency Accuracy:   ± 50 ppm (23'C ± 5'C)
OSC Level Range :  
Variable from 5 mVrms to 1.1 Vrms (when terminated by son in amplitudephase
measurements or UNKNOWN terminals are open in impedance measurements).
OSC Level Resolution:   1 mV (5mV to 100mV), 5 mV (lOOmV to 1.1 V)
Output Resistance: 50 Ohm (amplitude/phase measurements), 100 Ohm (impedance measurements, < 38kHz) 100 Ohm to 10kOhm (impedance measurements, < 38 kHz, depends on measuring range), dc coupling.

EXTERNAL SYNTHESIZER :

Frequency Range: 40,000005 MHz to 53 MHz (measuring frequency is equal to the frequency of the external synthesizer minus 40MHz [5Hz to 13MHz] )

Required Signal level: O dBm to 3 dBm

DIMENSIONS: 425.5mm (W) X 235 mm (H) X 615mm (D)

WEIGHT: Approximately 19 kg