ELECTRICAL |
| Loop limit |
2 kΩ maximum at 48 V DC
(nominal 20 mA minimum loop current) |
| DC resistance (Talk Mode) |
300 Ω typical |
| Monitor impedance |
39k Ω nominal at 1 kHz |
Rotary dial output
Pulsing rate
Percent break
nterdigit interval
Leakage during break |
10 pps+0.8 pps
61% ± 2%
1000 ms typical
>50 kΩ |
DTMF output
Tone frequency error
Tone level
High versus low tone
difference |
±1.2% maximum
-8 ± 2 dBm combined (typical)
4 dB maximum |
Memory dialing
Memory capacity
Digit capacity
PBX pause |
12 memories plus last number redialing
16 digits per memory
4 seconds |
| Monitor ampliier power source |
9 V transistor; provides 25 hours continuous use, typical |
| Speaker levels |
Low, medium, high |
| Automatic power shut off |
After 5 min. of no audio signal |
| Speaker phone levels |
Low, medium high |
| Power source |
Shared line and battery power |
PHYSICAL |
| Size |
26 x 7 x 8,9 cm / 10¼ x 2¾ x 3½ inches |
| Individual packing |
Color box |
ENVIRONMENTAL |
| Temperature |
Operating: 0 to 50?C
Storage: -40 to 66?C |
| Altitude relative humidity |
up to 10,000 feet / 5 to 95% |