| Name | Physical Appearance | Dimensions | Specification | |
|
PAT.
NO. 3016593
Upgrade version of SR-668B 600ohms : 600ohms system ( with Billing Noise Filter, Complied the Reverse Polarity Condition requirements, and with DC Resistance Control functions ) Complied the TBR21 standards !! |
||||
|
SR-861A
|
 |
A=60
B=40 C=25 |
Frequency
range
|
200Hz to 4kHZ |
|
Input
signal levels
|
10mV to 1V | |||
|
DC
impression range
|
using
the recommended circuit: 20mA to 90mA |
|||
|
Frequency
respose
|
from 200Hz to 4kHz, using the recommended circuit (600-ohm system), with a 10mV input signal level, and a superimposed DC60mA, for both transmission and reception: within +/-0.8db |
|||
|
Withstanding
voltage
|
2kV | |||
|
Electrical
safety standard
|
complied the IEC950 standards | |||
|
PAT.
NO. 3016593
Upgrade version of SR-668A 600ohms : 600ohms / 300ohms / 600ohms system ( with Billing Noise Filter, complied the Reverse Polarity Condition requirements, and with DC Resistance Control functions ) Complied the TBR21 standards !! |
||||
|
SR-861B
|
|
A=60
B=40 C=25 |
Frequency
range
|
200Hz to 4kHZ |
|
Input
signal levels
|
10mV to 1V | |||
|
DC
impression range
|
using
the recommended circuit: 20mA to 90mA |
|||
|
Frequency
respose
|
from 200Hz to 4kHz, using the recommended circuit(600-ohm system), with a 10mV input signal level, and a superimposed DC60mA, for both transmission and reception: within +/-0.8db |
|||
|
Withstanding
voltage
|
2kV | |||
|
Electrical
safety standard
|
complied the IEC950 standards | |||
|
600ohms
: 600ohms system
(without the above-mentioned functions) |
||||
|
SR-456B
|
 |
A=60
B=40 C=25 |
Frequency
range
|
200Hz to 4kHZ |
|
Input
signal levels
|
10mV to 1V | |||
|
DC
impression range
|
using
the recommended circuit: 20mA to 90mA |
|||
|
Frequency
respose
|
from 200Hz to 4kHz, using the recommended circuit(600-ohm system), with a 10mV input signal level, and a superimposed DC60mA, for both transmission and reception: within +/-0.8dB. |
|||
|
Withstanding
voltage
|
2kV | |||
|
Electrical
safety standard
|
complied the IEC950 standards | |||
|
Direct
Current Resistance Control(Limiter) module
Complied the TBR21 Direct Current standards !! |
||||
|
SR-603B
|
 |
A=60
B=40 C=25 |
Current impression range
|
DC 10mA to 60mA |
|
Impedance
|
at
1khz, with a superimposed DC range of 10mA to 60mA: 40 ohms or less |
|||
|
DCR
|
with
a 30-mA impressed DC: 150 ohms to 200 ohms with a 60-mA impressed DC : 600 ohms and above |
|||
Those who wish to inquire about our products' technical and/or detailed information, please contact our sales division.