| Interfaces |
| Telephone system: |
Modular telco |
| Headset: |
2.5 mm cell-phone type |
| Ringer Equivalence |
| In BELL mode: |
0.0 (no ringer load) |
| Pulse Dialing |
| Pulse rate: |
10 pps ± 10% |
| Make/break ratio: |
40% to 60% ± 2% |
| Interdigit interval: |
820 ms |
| Resistance during break: |
120K ohms |
| Tone Dialing |
| DTMF output (into 600 Ohms): |
Tone-frequency error: ±1.5%;
Tone level: High group: -6 ± 2 dBm;
Low group: -8 ± 2 dBm;
High vs. Low Difference: 2 ± 1 dBm
|
| Flash Duration |
| 600 ± 50 ms
|
| Pause Duration |
| Tone: |
3 seconds
|
| Pulse: |
3.4 seconds
|
| Memory |
| Battery backed-up memory stores eight programmed phone numbers (24 numbers) and associated names (16 characters), plus last-number redial. Battery will typically maintain stored numbers in an unused test set for over 2 years.
|
| Return loss |
| 14 dB at 600 Ohms |
| Line Current Range |
| 15 to 120 mA |
| Apparent Line Resistance |
| 275 Ohms at 20 mA |
| MONITOR-mode Impedance |
| >230K Ohm |
| Measurement |
| Voltage: |
0 to 128 VDC ± 5% |
| Current: |
10 to 140 mA ± 5% |
| Note: Do not attach test set to electric-power lines
|
| User Controls |
One left-side-mounted TALK/BELL/MON slide switch for operating mode;
One right-side-mounted microphone mute push button (tap to lock or hold down);
Six front-mounted push buttons for various options;
One standard front-mounted 12-key phone keypad |
| Indicator |
|
One front-mounted 2-line x 16-character reflective graymode super-twisted liquid crystal display (LCD) panel |
| Connectors |
| To telephone network: |
RJ-12 (6-wire RJ-11) female |
| To headset: |
2.5 mm cell-phone headset jack |
| Power |
| From a 9-VDC alkaline battery, typical: |
BELL mode (timed out): 20 µA;
TALK mode: CWCID OFF: 4 mA;
CWCID ON: 12 mA;
MONITOR mode: 27 mA |
|
Note: The loudspeaker can draw as much as 200mA peaks itself, in addition to the currents listed above for TALK and MONITOR modes. |
| Battery Life |
|
For a typical 9-VDC, 540 mA-hr alkaline battery: |
Operating: 20 hours min., 112 hours max.;
Standby: 2.5 years;
Typical: 25 to 40 hours
|
|
Note: The loudspeaker draws a large amount of power and can discharge the battery quickly if used at high volume on a line with a lot of signal. |
| Maximum altitude |
|
10,000 ft. (3048 m) operating |
| Temperature Tolerance |
|
Operating: |
32º to 122ºF (0º to 50ºC)
|
|
Storage: |
–4º to +140ºF (-20º to + 60ºC)
|
| Humidity Tolerance |
|
10% to 90% non-condensing |
| Enclosure |
|
High-strength ABS plastic |
| Size |
|
Excluding lanyard (top hook): |
7.25" H x 2.50" W x 1.68" D (18.5 x 6.4 x 4.3 cm)
|
| Weight |
|
With cable set: |
<10 oz. (284 g)
|
;)
