viDoc® Product Manual EN– Update 01/2022
2.3 Type Approval
Type approval or acceptance covers technical parameters of the equipment with regard to
emissions that may cause interference. Type approval is granted to the manufacturer of
the transmission equipment, regardless of the operation or approval of the equipment.
Some countries have specific technical requirements for operation, in particular modem
frequency bands. To meet these requirements, vigram® may have modified your
equipment to obtain type approval.
Unauthorized modifications to the equipment will invalidate the type approval, the
warranty and the operating license of the equipment.
2.4 Operation in the Vicinity of other Radio Equipment
When operating the receiver in member states of the European Union and in other
countries complying with EU R&TTE requirements, in the vicinity of air navigation
equipment operating between 2700 and 2900 MHz or fixed, fixed satellites (space to
earth) or for mobile systems operating at 4170 MHz, a minimum distance of 10 meters
must be maintained between the receiver and such radio equipment.
2.5 Exposure to High Frequency Radiation
2.5.1 For Bluetooth radio
The radiated output power of the internal Bluetooth radio is below the FCC radio
frequency exposure limits. Nevertheless, the radio(s) should be used so that the vigram®
device is 20 cm or further away from the human body. The internal wireless radio(s)
operate within the guidelines of radio frequency safety standards and recommendations
that reflect the consensus of the scientific community. Vigram therefore believes that the
internal wireless radios are safe for consumer use. The energy emitted is far less than the
electromagnetic energy emitted by wireless devices such as mobile phones. However, the
use of wireless radios may be restricted in some situations or environments, such as
aircraft. If you are unsure of the restrictions, you should request authorization before
switching on the wireless radio.
2.6 Installing the Antenna
CAUTION - For your own safety and in view of the FCC's RF exposure requirements,
always observe these precautions:
• Always keep a minimum distance of 20 cm (7.8 inches)
between yourself and the radiating antenna.
• Do not place the antenna together with other transmitting devices.
This unit is designed to operate with the antennas listed below and has a maximum gain
of 4 dBi. Antennas that are not included in this list or have a gain greater than 4 dBi are
strictly prohibited for use with this unit. The required antenna impedance is 50 ohms.
To reduce possible radio interference to other users, the antenna type and its gain should
be selected so that the equivalent isotropically radiated power (EIRP) is not higher than
that allowed for successful communication.
Approved external antennas: Four-Arm Helix Antenna Type JCH/SY.
