APPENDIX A
MODEL 1205 SPECIFICATIONS
Data
Rates:
32, 48, 56, 64, 72, 112, 128 and 144 Kbps
Clocking:
Internal, external or receive loopback
Interface:
ITU/CCITT V.35/EIA RS-530
Distance:
300 feet (DTE to DTE)
Connectors:
DB-25 or M/34 female on both Port A and
Port B
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A- Frame Ground
C- Request to Send
E- Data Set Ready
H- Data Terminal Ready
K-
M-
P- Transmitted Data (A)
S- Transmitted Data (B)
U- Terminal Timing (A)
W- Terminal Timing (B)
Y- Transmit Timing (A)
AA- Transmit Timing (B)
Signal Ground -B
Clear To Send -D
Data Carrier Detect -F
Receive Data (A) -R
Receive Data (B) -T
Receive Timing (A) -V
Receive Timing (B) - X
CCITT V.35 Interface (M/34 Female)
1 - (FG) Frame Ground
2 - Transmit Data A
3 - Receive Data A
4 - (RTS) Request to Send
5 - (CTS) Clear to Send
6 - (DSR) Data Set Ready
7 - (SG) Signal Ground
8 - (CD) Carrier Detect
9 - Receive Clock B
11 - External Clock B
12 - Transmit Clock B
Data Term. Ready (DTR) - 20
CCITT V.35/EIA-530 INTERFACE (DB-25 Female)
External Clock A - 24
Receive Clock A - 17
Transmit Data B - 14
Receive Data B - 16
Power Supply:
Draws interface power from RTS & DTR
signals on both ports.
RTS/CTS Delay:
Strap selectable, 0, 7, 53 mS (+/- 15%)
Altitude:
0 to 10,000 feet
Humidity:
5 to 95% noncondensing
Dimensions:
Approximately 3” x 2” x .75” (76 x 51 x
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