Operating instructions

LOCAL OPERATION
3-78 46882-311D
C1883
Level
Select
mess
Alert
type
Alert
type
Address/Alert Type messages
are selected by repeatedly pressing
the key
Table showing one possible
arrangement of responses to
differing function bit combinations
Function Bit
Combination
(00)
(01)
(10)
(11)
Following
Message Type
Numeric-only
No message
No message
Alpha-numeric
Alerting
Tones
1beep
2 beeps
3 beeps
1beep
Fig. 3-26 Alternative address/warning messages
Testing a radio pager
Radio pagers are self-contained units with no external antenna provision, therefore it is not
possible to make a direct RF connection between the Service Monitor and the pager. The Service
Monitor output can be taken from the BNC RF output connector using the telescopic antenna
accessory (IFR part No 54421/001N) or similar, where suitable screening is available.
Alternatively, a TEM cell may be preferable.
To configure the Service Monitor to make operational tests to a radio pager proceed as follows:-
• Select the POCSAG option from the Rx TEST mode, TONES function.
• Set the RF generator frequency to match the pager system operating frequency. Press the
[RF Gen] key to highlight the GEN FREQ: legend on the display. Enter the required
frequency using the data input keys.
• Set the RF output level to a suitable value by pressing the [RF Gen] key followed by the
orange [LEVEL] key to highlight the GEN and LEVEL: legends on the display. Use the data
input keys to enter the RF level.
• Set the modulation level to match the specification of the system to which the pager is
assigned. Press the [Tone Level] key to highlight the
: legend on the display.
Enter the required modulation level using the data input keys.
• Set the bit rate to match the specification of the system to which the pager is assigned. Press
the [Bit Rate] key to highlight the
legend on the display. Enter the value of the
required bit rate as a frequency using the data input keys, terminated by [Hz].
• If the system requires the transmitted data to have an inverted format, press the [Invert] key
to make the legend beside the
Polarity: legend on the display read Inverted. The [invert] key
toggles the legend between
Inverted and Normal.