Operating instructions

OPERATING MANUAL 2945A
46882-311D 1-13
User Defined Tones
Up to two sequential tones frequency plans may be defined and
stored within the Service Monitor. Any of the standard tone
frequency plans may be copied to user defined and modified.
Tone length 20 ms to 1 s.
Standard tone frequencies may be selected from a menu.
DTMF Generation and decoding of DTMF tones.
DCS Generation and decoding of Digitally Coded Squelch, DCS.
POCSAG Generation of POCSAG code CCIR No. 1 Rec 584. Bit rates from
400 to 4800 bit/s. Inversion available.
Audio Monitor Demodulated signals and audio signals may be monitored via the
internal loudspeaker and via the accessory socket output on
the front panel.
General features
Keyboard and Display Logical colour coded keyboard with bright high resolution LCD
Display size 160 x 85 mm
RS232C
RS232C interface is provided for printing or remote instrument
control.
Connector 9 way male ’D’ Type
Frequency standard
Internal Frequency Standard (TCXO)
Frequency 10 MHz
Temperature stability Better than 0.5 in 10
6
, 0 to 50 °C
Ageing Rate Better than 1 in 10
6
per year
Warm up 1 minute to specified accuracy
External Frequency Standard Input
Frequency 1, 2, 5 and 10 MHz
Input Level Greater than 1 V peak to peak
Input Impedance Nominally 1 kΩ
General
Power Requirements
AC Supply Voltage 90 V to 265 V 90 V to 132 V
AC Supply Frequency 45 Hz to 67 Hz 45 Hz to 440 Hz
Maximum AC Power 190 VA
DC Supply Voltage 11 to 32V
Maximum DC Power 100W
Low battery indicator Indication of low battery voltage provided.
Charge Output 13.8V at 6A max to charge a 12V sealed lead acid battery
Electro-Magnetic Compatibility Conforms with the protection requirements of the EEC Council
Directive 89/336/EEC.
Complies with the limits specified in the following standards:
EN 55011 Class B CISPR 11
EN50082-1 IEC 801-2,3,4
EN60555-2 IEC 555-2.