User Guide

RH-12/RH-28
Service Tools CCS Technical Documentation
Page 6 Nokia Corporation Issue 1 02/04
JBV-1 Docking station
The JBV-1 docking station is a general tool that has been designed for calibration and
software update use. The DA-8 docking station adaptor is a product-specific tool that
provides signal connections to the phone. The JBV-1 and the DA-8 are used as one unit.
The JVB-1 main electrical functions include the following:
• Adjustable VBATT calibration voltage, current measurement limit volt-
age: VCHAR, current measurement: ICHAR
• Adjustable ADC calibration voltage via BTEM and the BSI signal
• BTEMP and BSI calibration resistor
• Signal from FBUS to the phone via the parallel jig
• Control via FBUS or USB
• Flash OK/FAIL indication
In the calibration mode the JBV-1 is powered by an external power supply: 11-16V DC.
When flashing, the power for the phone can be taken from the FPS-8 or an external
power supply: 11-16 V DC.