Schwarzbeck VHIC 9260 Overview
The low noise impedance matching equipment VHIC 9260 (Fig. 1) has a high impedance input with minimized capacity. With the 50 ? output it can be used with common EMI receivers or spectrum analyzers to measure the emissions received by an antenna on a vehicle in the frequency band from 9 kHz to 120 MHz. As signal source a rod antenna or a capacitive voltage probe can be used. The good linearity allows precise measurements of the limits provided in CISPR 25. 2 BNC Connectors are used as RF-in- and output.
The measurement of the noise floor in the FM Band is possible by adding a 50 Ohm load to the input as described in CISPR 25. To avoid probable disturbance caused by a power supply the unit is equipped with 8 rechargeable NiMH-cells 1.2 V / 1900 mAh. A suitable charger is delivered optionally. The typical operation time is about 50 hours. The charging time is typically 2-4 hours.
| LED indicators after switching on | |
| Green: | Battery OK |
| Orange: | Battery reserve |
| Red: | Low Battery (charge!) |
| The batteries are protected by a fuse. Connector for charging | |
| Inner conductor: | plus |
| Outer conductor: | minus (ground) |
Avoid shorting the charging contacts! Protect from moisture!
| Schwarzbeck VHIC 926 Specifications | |
| Frequency range (nominal) | 9 kHz – 30 MHz |
| Frequency range (useable) | 9 kHz – 120 MHz |
| Voltage Gain (50 Ohm Load) | > 10 dB |
| Amplitude flatness | Max. +/- 0.5 dB |
| 1 dB compression point at input | 92 dBµV |
| Impedance input | Rin > 100 kOhm Cin < 10 pF |
| Impedance output | 50? |
| VSWR output | < 1.2 : 1 |
| Noise at input (AV-detector, BW= 9 kHz, 150 kHz – 120 MHz) | < -10 dBµV |
| Ambient temperature | -10° bis +60°C |
| Power supply | + 9,6V NiMH |
| Current consumption | < 35 mA |
| Material of the housing | Aluminium |
| Dimensions | 105x125x50 mm |
| Weight | 680 g |
| Recommended Charger | ACS 110 |
S21 with forced impedance matching at the input.
Transmission with Artificial Antenna Network (CISPR 25) at the Input.
Output Return Loss.
