Cypress OTT-2100 User manual

Page 1
Handheld OSDP
COMSET Tool!
OTT-2100!
Product Manual
Cypress Integration Solutions 35+ Years of Access Control Ingenuity CypressIntegration.com
©2022 Cypress Computer Systems 1778 Imlay City Road, Lapeer, MI 48446 800-807-2977
OTT-2100_220726

Page 2
Specifications
Part Number
Part Number
OTT-2100
UPC
816684004636
Physical
Physical Dimensions (L x W x H)
3.00 x 1.375 x 0.975 inches | 7.5 x 3.5 x 2.5 cm
Weight
1 oz. | 28.35 grams
Environmental
Operating Temperature Range
-40ºF to 158ºF | -40ºC to 70ºC
Enclosure Rating
Not rated for water or dust intrusion
Electrical
Battery
3 VDC, 225 mAh
CR2032 coin cell, non-rechargeable
Lithium Manganese Dioxide (LiMnO2)
Additional
Features
Sleep Mode to save battery life. Low battery indicator.
OSDP polarity switching to make connecting to OSDP readers easier.
Firmware upgradable using the OSDP file transfer protocol.
Small, pocket size.
Field-serviceable battery.
Multiple operating modes: COMSET, Listening, and Firmware Update modes.
Cypress OTT-2100 Manual - Product Overview & Specifications
The OTT-2100 is a pocket-sized device for quickly and easily configuring the address and baud
rate of an OSDP reader or other Peripheral Device without a tablet device, laptop PC, desktop PC,
or access controller. A technician can use the OTT-2100 to set the address and baud rate of OSDP
readers before they are installed in the field, or after installation.!
The address and baud rate are set with DIP switches on the device. Three LEDs display the state
of the OTT-2100 and the OSDP communication session. The OTT-2100 will switch the polarity of
the OSDP lines so it can communicate with the OSDP reader, making it easier to connect to OSDP
devices.

Page 3
Cypress OTT-2100 Manual - Table of Contents
Table of Contents
Topic
Page
Overview and Specifications
2
Physical Features
4
Dimensions
5
Wiring Diagram: COMSET Mode
6
Wiring Diagram: Listening Mode
7
Wiring Diagram: Firmware Update Mode
8
Status LEDs
9
DIP Switches
10
Address DIP Switch Tables
11-13
Operating Modes: COMEST Mode
14-15
Operating Modes: Listening Mode
16-17
Operating Modes: Firmware Update Mode
18
OSDP Terminology
19

Page 4
Cypress OTT-2100 Manual - Physical Features
OSDP Port
(Removable screw
terminal block)
DIP Switches
Power/Mode Switch
Status LEDs
Product Label
Battery Compartment
Serial Number Label

Page 5
Cypress OTT-2100 Manual - Dimensions
3.00 inches
1.375 inches
0.975 inches
thick

Page 6
OSDP
Reader
DC Power
Supply
Power
Ground
Cypress OTT-2100 Manual - Wiring Diagram: COMSET Mode
OSDP Data Lines

Page 7
Cypress OTT-2100 Manual - Wiring Diagram: Listening Mode
OSDP
Reader
DC Power
Supply
Power
Ground
RS485 A
RS485 B
OSDP Access
Control Panel
OSDP Data Lines

Page 8
RS485 A
RS485 B
OSDP Access
Control Panel
Cypress OTT-2100 Manual - Wiring Diagram: Firmware Update Mode
OSDP Data Lines

Page 9
Cypress OTT-2100 Manual - Status LEDs
LED 1
LED 2
LED 3
The OTT-2100 has three RGB LEDs that show the status of the device. The LED displays are
different, depending on the operating mode the unit is in. There are LED tables showing the states
and meanings of the three LEDs in each of the operating mode sections of this manual. When the
device is powered on in any mode, LED 2 (center) will display the power up sequence. LED 2 will
briefly flash red, then green, then blue. See the LED tables in the COMSET Mode, Listening Mode,
and Firmware Update Mode sections for specific LED behavior in each mode. !
In COMSET Mode, Listening Mode, and Firmware Update Mode LED 1 will be solid red when the
battery voltage is low.
Sleep Mode
The OTT-2100 enters Sleep Mode when none of the switches have been used for more than 2.5
minutes (150 seconds). The OTT-2100 exits Sleep Mode when it is power cycled by moving the
Power/Mode switch to the center position and then to the left or right position. The purpose of
Sleep Mode is to save battery life.

Page 10
Cypress OTT-2100 Manual - DIP Switches
ON
12345678910
OSDP Address Select Baud Rate
Select
The OTT-2100 has a 10 position DIP switch bank that is used to select the OSDP address and the
baud rate that the OTT-2100 will configure in the connected OSDP reader or PD. The DIP switch is
ON when the switch is pushed away from the number on the DIP switch bank, or towards the 2-
pin header/connector. The DIP switch is OFF when the switch is pushed toward the number on the
DIP switch bank, or towards the Status LEDs.!
DIP switches 1-7 are used to select the desired OSDP address. Addresses 0-126 are available, see
the OSDP address tables on the following pages for how set the DIP switches for the desired
OSDP address. !
DIP switches 8-10 are used to select the desired baud rate. See the table below on this page for
how to set the DIP switches for the desired baud rate.
Baud Rate
8
9
10
9600
19200
X
38400
X
57600
X
X
115200
X
230400
X
X
X = ON

Page 11
Cypress OTT-2100 Manual - Address DIP Switch Tables
Address
1
2
3
4
5
6
7
0
1
X
2
X
3
X
X
4
X
5
X
X
6
X
X
7
X
X
X
8
X
9
X
X
10
X
X
11
X
X
X
12
X
X
13
X
X
X
14
X
X
X
15
X
X
X
X
16
X
17
X
X
18
X
X
19
X
X
X
20
X
X
21
X
X
X
22
X
X
X
23
X
X
X
X
24
X
X
25
X
X
X
26
X
X
X
27
X
X
X
X
Address
1
2
3
4
5
6
7
28
X
X
X
29
X
X
X
X
30
X
X
X
X
31
X
X
X
X
X
32
X
33
X
X
34
X
X
35
X
X
X
36
X
X
37
X
X
X
38
X
X
X
39
X
X
X
X
40
X
X
41
X
X
X
42
X
X
X
43
X
X
X
X
44
X
X
X
45
X
X
X
X
46
X
X
X
X
47
X
X
X
X
X
48
X
X
49
X
X
X
50
X
X
X
51
X
X
X
X
52
X
X
X
53
X
X
X
X
54
X
X
X
X
55
X
X
X
X
X
X = ON
X = ON

Page 12
Cypress OTT-2100 Manual - DIP Switch Tables (continued)
Address
1
2
3
4
5
6
7
56
X
X
X
57
X
X
X
X
58
X
X
X
X
59
X
X
X
X
X
60
X
X
X
X
61
X
X
X
X
X
62
X
X
X
X
X
63
X
X
X
X
X
X
64
X
65
X
X
66
X
X
67
X
X
X
68
X
X
69
X
X
X
70
X
X
X
71
X
X
X
X
72
X
X
73
X
X
X
74
X
X
X
75
X
X
X
X
76
X
X
X
77
X
X
X
X
78
X
X
X
X
79
X
X
X
X
X
80
X
X
81
X
X
X
82
X
X
X
83
X
X
X
X
Address
1
2
3
4
5
6
7
84
X
X
X
85
X
X
X
X
86
X
X
X
X
87
X
X
X
X
X
88
X
X
X
89
X
X
X
X
90
X
X
X
X
91
X
X
X
X
X
92
X
X
X
X
93
X
X
X
X
X
94
X
X
X
X
X
95
X
X
X
X
X
X
96
X
X
97
X
X
X
98
X
X
X
99
X
X
X
X
100
X
X
X
101
X
X
X
X
102
X
X
X
X
103
X
X
X
X
X
104
X
X
X
105
X
X
X
X
106
X
X
X
X
107
X
X
X
X
X
108
X
X
X
X
109
X
X
X
X
X
110
X
X
X
X
X
111
X
X
X
X
X
X
X = ON
X = ON

Page 13
Cypress OTT-2100 Manual - DIP Switch Tables (continued)
Address
1
2
3
4
5
6
7
112
X
X
X
113
X
X
X
X
114
X
X
X
X
115
X
X
X
X
X
116
X
X
X
X
117
X
X
X
X
X
118
X
X
X
X
X
119
X
X
X
X
X
X
120
X
X
X
X
121
X
X
X
X
X
122
X
X
X
X
X
123
X
X
X
X
X
X
124
X
X
X
X
X
125
X
X
X
X
X
X
126
X
X
X
X
X
X
X = ON

Page 14
Cypress OTT-2100 Manual - Operating Modes: COMSET Mode
Overview
The OTT-2100 is put into COMSET Mode by pushing the Power/Mode Switch to the left position as
indicated on the Product Label. Only one OSDP reader or PD can be connected to the OTT-2100
while in COMSET mode. !
COMSET Mode is used to set the address and baud rate of a single OSDP reader or other
Peripheral Device (PD). The desired address and baud rate can be set before the OTT-2100 is
powered on in COMSET Mode, or while the OTT-2100 is powered on in COMSET Mode. When the
DIP switches change while the OTT-2100 is powered on in COMSET Mode, it will restart the
COMSET process with the new parameters automatically. !
The OTT-2100 has an OSDP polarity switching feature, which allows the device to communicate
with the reader or PD no matter the polarity of the connected OSDP lines. !
When the OTT-2100 is connected to a PD and is powered on in COMSET Mode, it will do the
following:!
1. Attempt to communicate with the PD, regardless of the current address and baud rate
configuration.!
2. Attempt to set the PD’s address and baud rate to the selected values.!
3. Attempt to start a Secure Channel Session with the default OSDP Secure Channel Base Key
(SCBK).!
The table below shows the different LED states and meaning for those states for each of the 3
LEDs in COMSET Mode.!
General Instructions
1. Set the desired address and baud rate using the DIP switches. !
2. Connect the single OSDP reader or PD to the OTT-2100 by connecting the two OSDP data
lines to the removable screw terminal block. The polarity of the OSDP data lines does not
matter, as the polarity switching feature will allow communication regardless of the polarity. !
3. Turn the Power/Mode switch to the left position to power the OTT-2100 on in COMSET Mode. !
4. LED 1 will be flashing blue while the OTT-2100 is attempting to establish communication with
the OSDP reader. !
5. Once the OTT-2100 has established communication with the OSDP reader LED 1 will be
flashing green.!
6. LED 1 will continue flashing green while communicating with the OSDP reader. Once the OSDP
reader address and baud rate have been configured, LED 2 will turn solid green.!
7. After the address and baud rate have been configured the OTT-2100 will attempt to start a
Secure Channel session with the OSDP reader. LED 3 will be solid green when communicating
with the OSDP reader in a Secure Channel session with the default Secure Channel Base Key
(SCBK).

Page 15
LED
LED State
Meaning
LED 1
Flashing Green
Communicating with the PD
LED 1
Flashing Blue
Searching for PD
LED 1
Solid Red
Low battery voltage
LED 2
Solid Green
PD’s address and baud rate have been set to the selected values
LED 2
Solid Blue
PD accepted the new address, but rejected the new baud rate
LED 2
Solid Red
PD did not send COM reply after the COMSET command was sent (COMSET failed)
LED 3
Solid Green
PD has the default OSDP Secure Channel Base Key (SCBK)
LED 3
Solid Blue
PD has a custom OSDP Secure Channel Base Key (SCBK), not default
LED 3
Solid Red
PD is not capable of Secure Channel sessions (rejects any attempt)
COMSET Mode LED Table
Cypress OTT-2100 Manual - Operating Modes: COMSET Mode (cont.)

Page 16
Cypress OTT-2100 Manual - Operating Modes: Listening Mode
Overview
The OTT-2100 is put into Listening Mode by pushing the Power/Mode Switch to the right position
as indicated on the Product Label. Multiple OSDP readers or PDs can be connected to the OSDP
bus while the OTT-2100 is in Listening Mode.!
Listening Mode is used to listen to an OSDP communication session between a reader or PD and
an Access Control Unit (ACU) to determine basic functionality of the OSDP system. While in
Listening Mode, the DIP switches are used to select the address of the PD and the baud rate of the
communication session. !
In Listening Mode the OTT-2100 can indicate the following: !
•Commands in Clear Channel or Secure Channel sessions sent from the ACU to the PD.!
•Replies in Clear Channel or Secure Channel sessions sent from the PD to the ACU.!
•Communication session reset initiated the ACU.!
•NAK reply sent from the PD to the ACU (indicates bad interaction).!
•Reply other than ACK, NAK, or RAW sent from the PD to the ACU (I/O and misc. messages).!
•RAW reply (credential data) sent from PD to ACU.!
•Bad messages (CRC/Checksum error). !
These events in the OSDP communication session The OTT-2100 is put into Listening Mode by
pushing the Power/Mode Switch to the right position as indicated on the Product Label. !
General Instructions
1. Using the DIP switches, set the address to match the address of the PD and baud rate of the
OSDP communication session between the ACU and PD.!
2. Connect two OSDP data lines used by the ACU and PD to the removable screw terminal block
on the OTT-2100. The polarity of the OSDP data lines does not matter, as the polarity switching
feature will allow communication regardless of the polarity.!
3. Turn the Power/Mode switch to the right position to power the OTT-2100 on in Listening Mode.!
4. Observe the states of LED 1, LED 2, and LED 3. The LEDs indicate the type OSDP commands
and replies sent between the ACU and PD.

Page 17
LED
LED State
Meaning
LED 1
Flashing Green
ACU sent a command to the PD while in a Secure Channel session (encrypted)
LED 1
Flashing Blue
ACU sent a command to the PD while in a Clear Channel session (unencrypted)
LED 1
Flashing Red
ACU reset the communication session with the PD
LED 1
Solid Red
Low battery voltage
LED 2
Flashing Green
PD sent a reply to the ACU while in a Secure Channel session (encrypted)
LED 2
Flashing Blue
PD sent a reply to the ACU while in a Clear Channel session (unencrypted)
LED 2
Flashing Red
PD replied to the ACU with a NAK*
LED 3
Flashing Green
PD sent RAW reply (credential data) to ACU
LED 3
Flashing Blue
PD sent any reply that other than ACK, NAK, or RAW*
LED 3
Flashing Red
ACU/PD message with bad CRC/Checksum error (bad message)
Listening Mode LED Table
Cypress OTT-2100 Manual - Operating Modes: Listening Mode (cont.)
* Definitions of NAK, ACK, and RAW OSDP replies. See also page 19 for a list of defined OSDP
terms used in this document. !
NAK: Negative acknowledge reply from the PD. Indicates the PD had an error processing the previous
command.!
ACK: Positive acknowledge reply from the PD. The PD properly processed the previous command or
nothing to report to ACU. !
RAW: PD reply with card data payload. Card data is a raw string of bits.

Page 18
Cypress OTT-2100 Manual - Operating Modes: Firmware Update Mode
LED
LED State
Meaning
LED 1
Flashing Green
OTT-2100 is communicating with ACU in a Secure Channel session
LED 1
Flashing Blue
OTT-2100 is communicating with ACU in a Clear Channel Session
LED 1
Solid Red
Low battery voltage
LED 2
Flashing Green
FILETRANSFER is in progress
LED 2
Flashing Red
OTT-2100 is waiting to be polled by the ACU
LED 3
Solid Green
File received, device will restart
LED 3
Solid Red
File is corrupt
Overview
The OTT-2100 is put into Firmware Update Mode by turning on all 10 DIP switches and pushing the
Power/Mode Switch to the left or right position.!
Firmware Update Mode is used to update the firmware of the OTT-2100. While in Firmware Update
Mode the OTT-2100 acts as a PD and accepts firmware files over the osdp_FILETRANSFER
protocol. The OTT-2100 must be connected to an ACU capable of file transfer and have the ACU
send it an OTT-2100 firmware image. !
When the OTT-2100 is powered on in Firmware Update Mode as a PD, the address is set to 0 and
the baud rate is set to 9600. The address and baud rate can be changed with the COMSET
command, but these changes are only for the current communication session and do not persist
through power cycle.!
General Instructions
1. Set all 10 DIP switches to the ON position. !
2. Connect the OTT-2100 to a FILETRANSFER capable ACU. !
3. Turn the Power/Mode switch to either the left or right position to power the OTT-2100 on in
Firmware Update Mode.!
4. LED 1 will be flashing red while it is waiting to be polled by the ACU. Once the OTT-2100 is
being polled by the ACU, LED 1 will be flashing green if in a Secure Channel session or flashing
blue is in a Clear Channel session.!
5. The user needs to have the ACU initiate the FILETRANSFER with the OTT-2100 using the
OTT-2100 firmware file.!
6. LED 2 will be flashing green when the FILETRANSFER is in progress.!
7. LED 3 will be solid green if the FILETRANSFER is successful and the OTT-2100 will restart. LED
3 will be solid red if the FILETRANSFER is unsuccessful.
Firmware Update Mode LED Table

Page 19
Cypress OTT-2100 Manual - OSDP Terminology
This section lists and defines in general terms OSDP terminology used in this manual. !
Access Control Unit (ACU): Typically the access controller, the ACU is the device on the OSDP bus that
controls the PDs. The ACU only sends commands to the PDs and waits for replies. !
Peripheral Device (PD): Typically a reader, but many other devices can be PDs, any device on the OSDP
bus that is not the ACU. PDs receive commands from the ACU and send replies. !
Address: OSDP Peripheral Devices are assigned an address, all PDs on the OSDP bus must have a unique
address. This address is used in commands from the ACU and in replies from the PD to indicate which
device the message is being sent to/from. !
Baud Rate: Data transfer rate, expressed in bits per second.!
Secure Channel Base Key (SCBK): 16 byte key set by the user used to initiate Secure Channel
communication sessions. !
Secure Channel Session: OSDP communication sessions using the Secure Channel Protocol, which,
among other things, encrypts the data payload in OSDP messages. !
Clear Channel Session: OSDP communication sessions without data payload encryption. !
FILETRANSFER: OSDP protocol used to transfer a file from the ACU to the PD. In the case of the
OTT-2100, a firmware file. !
NAK: Negative acknowledge reply from the PD. Indicates the PD had an error processing the previous
command.!
ACK: Positive acknowledge reply from the PD. The PD properly processed the previous command or
nothing to report to ACU. !
RAW: PD reply with card data payload. Card data is a raw string of bits. !