Tait T830 Series, Service Manual

Page: 112 / 284

31/01/96 Copyright TEL
1.2 Specifications
1.2.1 Introduction
The performance figures given are minimum figures, unless otherwise indicated, for
equipment tuned with the maximum switching band and operating at standard room
temperature (+22
°
C to +28
°
C).
Where applicable, the test methods used to obtain the following performance figures are
those described in the EIA specification. However, there are several parameters for
which performance according to the CEPT specification is given.
Details of test methods and the conditions which apply for Type Approval testing in all
countries can be obtained from Tait Electronics Ltd.
1.2.2 General
Frequency Range .. 136-174MHz (refer to Section 1.3)
Modulation Type .. direct FM
Frequency Increment .. 5 or 6.25kHz
Switching Range .. 8MHz
Number Of Channels:
Standard .. 1
Optional .. 8
Internally Selectable
.. 128
Supply Voltage:
Operating Voltage .. 10.8 to 16V DC
Standard Test Voltage .. 13.8V DC
Polarity .. negative earth only
Polarity Protection .. diode
Keying Supply (if required) .. -50V DC
Supply Current:
Transmit - T836 .. 4.5A (typical)
- T837 .. 600mA
Standby .. 120mA
Load Impedance .. 50 ohms
Operating Temperature Range .. -30
°
C to +60
°
C
Frequency Stability .. ±2.5ppm, -30
°
C to +60
°
C
(see also Section 1.3)