Loop Limit

2.4 kΩmaximum at 48 VDC (nominal 15 mA minimum loopcurrent)

DC Resistance (Talk Mode)

150 Ωtypical at 80 mA current

AC Impedance (Monitor Mode)

Low impedance (Ring position) 600 Ωat 1 KHz typical
High impedance (HI Z position) 100 kΩminimum at 1 KHz

Rotary Dial Output

10 pps .5 pps

Pulsing Rate

60 % ± 2 %

Percent Break

800 ms typical

Interdigit Interval Leakage During Break

> 50 kΩ

DTMF Output

±1 % maximum

Tone Frequency Error Level per Tone Pair

dBm maximum, - dBm minimum

High versus Low Tone Difference

4 dB maximum

Length

8.75 in (22.2 cm)

Width

2.375 in (6.03 cm)

Height

3.375 in (8.57 cm)

Weight

10.8 oz (.307 kg) maximum

Temperature

Operating: -5 °C to °C
Storage: -40 °C to °C

Drop

1 meter, 4 times

Altitude

To 3,000 meters (10,000 feet) maximum

Relative Humidity

10 %to 80 % (non-condensing)

Regulatory Standards Used

47 CFR Part 15, Subpart B
ICES-003 Issue 3
AS/NZS 3548
EMC Directive 89/336/EEC, EN 55022:98, EN 61326:97, A1:98 Annex C, EN 61000-4-2, EN 61000-4-3
LV Directive 73/23/EEC, EN 610010.1 (1993)

Certifications and Compliance

CAN/CSA-C22.2 No. 60950-1-03
CAN/CSA-C22.2 No. 1010.1-92 CSA-C22.2 No. 1010.1B-97, UL/ANSI 3111-1