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CONVERGE PRO TH20
Telephone Audio Performance
Conditions: Unless otherwise specified, all •
measurements are performed with Transmit Limiter and
Receive ALC disabled
Frequency Response: 250Hz to 3.3 kHz ±1dB•
THD+N: <0.3% re-max level 250 Hz to 3.3 kHz•
SNR: > 62 dB re-max level•
Telephone Noise Cancellation
Noise Cancellation 6-15 dB attenuation•
Telco Line Echo Cancellation
Tail Time: 31 ms•
Null: 55 dB nominal•
Telco Line
RJ-11•
POTS (plain old telephone service) or analog extension •
from a PBX)
A-lead supervision provided•
Telco Set
RJ-11•
POTS (plain old telephone service) or analog extension •
from a PBX
A-lead supervision provided•
Audio Performance
Conditions: Unless otherwise specified, all •
measurements are performed with a 20 Hz to 22 kHz
BW limit (no weighting)
Frequency Response: 20 Hz to 22 kHz ±1dB•
Rs=150Ω•
THD+N: <0.02%•
Dynamic Range: 100 dB (non A-weighted)•
Crosstalk <-91 dB re 20 dBu @ 20 kHz channel to •
channel
Line Inputs 1, 2
Push-on mini-terminal block, balanced, bridging•
Impedance:<5kΩ•
Nominal Level: 0 dBu•
Maximum Level: 20 dBu•
Line Outputs 1,2
Push-on mini-terminal block, balanced•
Impedance:<50kΩ•
Nominal Level: 0 dBu•
Maximum Level: 20 dBu•
Expansion Bus In/Out
Proprietary Network•
RJ-45 (2), 1.9 Mbps•
Category 5 twisted-pair cable, 200’ maximum cable •
length between any two Converge/Converge Pro
devices
Ethernet
Autoswitching with Quality of Connection (QoC)•
10/100 Mbps Ethernet Network Port•
10/100 Mbps Ethernet PC Port•
RJ-45 Connectors•
RS-232
Serial Command Protocol Only (Console software not •
supported on RS- 232 port)
DB-9 female•
9,600/19,200/38,400/57,600/115,200 baud rate; 8 bits, •
1 stop bit, no parity
Hardware flow control on (default)/off•
USB
Version 2.0 compatible•
Type: B-connector•
Control/Status Ports
DB-25 female A/B (2)•
Inputs A/B: active low (pull to ground)•
Outputs A/B: open collector, 40 VDC max, 40 mA each•
+3.3 VDC pins (2) (300 mA over-current protected)•
Configuration & Administration Software
Converge Console•
Power Input Range
Auto-Adjusting•
100–240 VAC; 50/60 Hz•
Power Consumption
30 W Typical•
Dimensions (L x D x H)
17.25” x 10.25” x 1.75”•
43.8 x 26 x 4.5 cm•
Weight
7.5 lbs/3.3375 kg unit weight•
12 lbs/5.4kg shipping•
Operating Temperature
14° F/-10° C to 122° F/50° C ambient unit temperature•
Approvals
See • Appendix D: Compliance
AES48-2005: AES standard on interconnections •
—Grounding and EMC practices — Shields of
connectors in audio equipment containing active
circuitry (self certified)
Part Number
910-151-820 Converge Pro TH20
Telephone Hybrid for Converge Pro 880, 880T, 840T, 8i, and
Converge SR 1212