Sailor RE2100, Техническое руководство

Страница: 39 / 186

3 SERVICE RE2100
3.5 PERFORMANCE CHECK
GENERAL
A performance check is intended to be used as a check after repair and before reinstallation of the
equipment.
A performance check can be used to check the equipment after a certain time to make sure that the
equipment is according to the required technical specifications.
The performance check is divided into three sections, and it is possible to perform one of the sections or
all of them.
Connect the RE2100 with the testbox for the RE2100 and connect the power supply and the handset to
the testbox as described in chapter 3.3 PROPOSAL FOR NECESSARY TEST EQUIPMENT.
If no testbox is available, it is possible to operate the RE2100 by connecting the power supply directly to
the 25 pin connector, which is located at the back of the RE2100. The pin configuration for this connector
is listed in chapter 2.3 ELECTRICAL CONNECTION AND ASSEMBLING. But it is only necessary to
establish the following connections:
pin No. 10 -18V/0.2 Amp.
pin No. 11 + 9V/0.5 Amp.
pin No. 12 +18V/0.8 Amp.
pin No. 5 GND
The handset is connected directly to the 9 pin connector at the back of the RE2100.
This chapter includes a number of measurements where a signal generator is needed. The output level
of the generator is, in this manual, expressed in terms of the Electromotive Force (EMF), and it is
measured in terms of the unit: dB/uV = 20 log(EMF/1uV), (dB above one microvolt).
The output level from signal generators in general is sometimes expressed in terms of the available power
P
a
, which is measured in terms of the unit: dBm = 10 log(P
a
/1mW), (dB above one milliwatt). For this
reason the conversion formulas between EMF and available power and vice versa are given here:
P
a
(dBm) = EMF (dB/uV) - 113 dB
EMF (dB/uV) = P
a
(dBm) + 113 dB
where P
a
is the available power and EMF is the Electromotive Force of the generator.
3.5.1 PERFORMANCE CHECK OF DISPLAY AND KEYBOARD
Connect the RE2100 with the testbox for RE2100. Connect the power /-18V/2A, the loudspeaker,
and a coax cable from the RE2100, SP-BUS output socket to the proper input terminals on the testbox.
The necessary test equipment to carry out a performance check is described in this manual chapter 3.3
PROPOSAL FOR NECESSARY TEST EQUIPMENT.
3.5.1.1 PERFORMANCE CHECK OF DISPLAY
1. Select test programme SP-00-2.
2. Control that the display is switched between all possible combinations of lighted bars.
3. Control that the mode indicating bars are toggled.
4. Control that the power reduction bars are alight.
PAGE 3-9