Page 1
M820-00
General A1.1
1 General
If further information is r equired about T820 Series equipment or this Manual, it may be
obtained from Tait Electronics Ltd or accredited agents. When requesting this information, please quote the product type number (e.g. T825-10) and serial number. In the case
of the Service Manual quote the Tait Internal Part Number (IPN), e.g. M820-00-100, and
for circuit diagrams quote the 'Title', 'IPN' and 'Issue'.
1.1 Caution: CMOS Devices
This equipment contains CMOS Devices which are susceptible to damage from static
charges. Care when handling these devices is essential. For correct handling procedures refer to the manufacturers' data books, e.g. Philips data books covering CMOS
devices, or Motorola CMOS data books, Section 5 'Handling', etc.
conductive
wrist strap
to building earth
(not mains earth)
via 1M series resistor
metal frame
Figure 1.1 Typical Anti-static Bench Set-up
conductive rubber
bench mat
An anti-static bench kit (refer to Figure 1.1) is available from Tait Electronics Ltd under
the usual consumable goods ordering system. The kit is held in stock under IPN
937-00000-34 and contains:
• 1 conductive rubber bench mat
• 1 earth lead to connect the mat to ground (c/w 1M series resistor)
•1 wrist strap
• information leaflet.
Copyright TEL 30/04/96
Page 2
A1.2 General
M820-00
1.2 Caution: Aerial Load
The equipment has been designed to operate safely under a wide range of aerial loading
conditions. However, it is strongly recommended that the transmitter should not be
operated in the absence of a suitable load. Failure to observe this warning may result in
damage to the transmitter output power stage.
1.3 Caution: Beryllium Oxide & Power Transistors
The RF power transistors in current use all contain some beryllium oxide. This substance, while perfectly harmless in its normal solid form, can become a severe health
hazard when it has been reduced to dust. For this reason the RF power transistors
should not be broken open, mutilated, filed, machined, or physically damaged in any
way that can produce dust particles.
30/04/96 Copyright TEL
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