Toshiba FT-8859, Service Manual

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56
BASE UNIT
RECEIVER UNIT NOMINAL LIMIT
1. Sensitivity 12 dB SINAD with CCITT Filter dBm -115 < -107
2. Frequency Response (Ref:1kHz) 0.3kHz dB -1.0 -5.0~+3.0
3.0kHz dB -8.0 -12.0~-4.0
3. Distortion at 1 mV RF Input % 1.5 < 5
4. S/N ratio at 1 mV RF Input with CCITT Filter dB 70 60 <
5. Selectivity (NQ20dB) 6dB Ban kHz 15 10 <
6dB Bandwidth - kHz 15 10 <
6. Tel Line Output Level (600W Load) dBm -11 -15~-7
7. Bell Ringer Level at 30cm from Speaker
Frequency: 1.0kHz + 2.0kHz HI dBSPL 83 75 <
8. Intercom Ringer Level at 30cm from Speaker
Frequency: 1.0kHz Called from H/S dBSPL 75 70 <
Call to H/S dBSPL 59 HI LEVEL
-16dB ±3dB
TRANSMITTER UNIT NOMINAL LIMIT
1. RF Power (50W Load) dBm -5.5 -8.5~-2.5
2. Modulation Sensitivity dBm -20 -24~-16
3. Frequency Response (Ref:1kHz) 0.3kHz dB -1.5 -5.5~+2.5
3.0kHz dB -1.5 -5.5~+2.5
4. Frequency Tolerance (25°C) Hz 0 ±1500
5. Code Deviation kHz 8.0 < 11
6. Distortion % 1.5 < 5
7. S/N Ratio with CCITT Filter dB 38 30 <
TELEPHONE LINE UNIT NOMINAL LIMIT
1. Off-hook Impedance (at 1kHz) OHM 1000 500~1500
2. Off-hook DC Resistance (DC 40mA) OHM 250 100~300
3. On-hook Impedance 20Hz (75Vrms) kOHM 21 10 <
4. Minimum Ringer Input Level Vrms 23 < 40
5. Pulse Dialing
a. Dialing Rate (@10pps) pps 10 8~11
b. Make Ratio (@10pps) % 39 36~42
6. DTMF Output (@600W Load)
a. Minimum Level of Single Tone
Low Group dBm -7 -10 <
High Group dBm -5 -8 <
b. DTMF Level dBm -3 < 0
c. DTMF Frequency
Row 1 Hz 697 687~707
Row 2 Hz 770 759~781
Row 3 Hz 852 840~864
Row 4 Hz 941 927~955
Column 1 Hz 1209 1191~1227
Column 2 Hz 1336 1316~1356
Column 3 Hz 1477 1455~1499
d. Signal Length mSec 100 90 <
e. Interdigital Pause mSec 100 80 <
SPEAKER PHONE UNIT NOMINAL LIMIT
1. Microphone Sensitivity mV 1.4 0.8~2.3
(-20dBm TEL Output, set to MIC Gain is MAX and SPEAKER Gain is MIN.)
2. Receiver Response Audio Out mV 1650 1000 <
(Audio Output at -20dBm TEL Input:20 Pin and 25 Pin at IC7 is Shout.)
INTERCOM UNIT NOMINAL LIMIT
1. Microphone Sensitivity mV 1.4 0.8~2.3
(1kHz±6.0kHz Dev., set to MIC Gain is MAX and SPEAKER Gain is MIN.)
2. Receiver Response Audio Out(1kHz ±8kHz Dev.) mV 760 480 <